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If you are an owner of some manufacturing business, then you might already know how important these CNC grinding machines are. If one of these machines breaks down, it might cost you a lot of money in missed shipments and wasted production hours. Hence, it is of paramount importance to make sure your machines are prepared to run. So, now we are going to tell you how often you should inspect your CNC grinding machines, and what to look for during check-ups.

 

Daily Maintenance

 

At the end of days’ work, you might want to make sure these machines are prepared to run the very next day. Run the following checks –

 

  • Lube level in these machines might be down. So, check and replenish if necessary
  • Make sure the hydraulic fluids and hydraulic pressure are at optimum level
  • Your machines might contain some sort of cooling system. If it does have one, make sure those are at optimum level
  • Wipe all the working surfaces, and make sure these machines are clean and dry

 

Bi-Annual Maintenance

 

You should hire a specialist every 6 months to run further check-ups and make sure of any potential threat within the system. He will perform following check-ups –

 

  • Replace hydraulic fluid
  • Replace any wiper that might be damaged
  • Inspect chuck and jaws, and make sure they are working properly
  • Replacement of any damaged line and suction filter
  • Test the cooling unit and repair if necessary

 

Annual Checkup

 

Lastly, you should hire a specialist each year to perform some other tests. This time around, the specialist will run following tests –

 

  • Inspect the spindle and make sure of any prevailing radial and end play
  • X and Y- axis gibs should be checked and adjusted accordingly, if necessary
  • Tailstocks should be checked for any prevailing tapering
  • Running backlash program
  • Chuck cylinder should be inspected and repaired if necessary

 

For more information about CNC grinding machine, try to visit Joen Lih Machinery Co., Ltd. – the company’s grinding machines are designed to meet current and future grinding requirements. Contact with Joen Lih to get further details.

 

 

Article Source: http://www.sturdygrinding.com/about/latest-industry-news/How-Often-Should-I-Inspect-My-CNC-Grinding-Machine_AE15.html

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When working on a car, you often come across specialty components that require specialty tools to remove and install them. One of the most common parts you may face is pulleys and gears. A lot of these are pressed on by the factory, and the only way to get them apart is with a specialty puller. There are quite a few pullers, some of which double as installers as well, and we have selected the most common to show you how they work.

 

Pulling Tools

The following tools and uses are not exclusive, pullers, particularly the universal type, are very useful for all kinds of projects. Once you know how to use them, you will find all manner of creative applications, even outside the car.

 

  • Tie Rod Tool – Removing old tie rods can be a bear, especially when the car is old and crusty. We usually try the hammer-tap method first, but this doesn’t usually work on really old cars. That is the tie-rod removal tools come out. Pickle forks tend to damage parts, so those are out. These tools are a one-piece cast or forged U-shaped tool that locks over the steering arm or drag link and the center stud is threaded in to press the joint out. They work very well and are affordable. You might want to flip the castle nut over and roll a few threads onto the joint to help keep the press stud centered, as they can walk off the joint and booger the threads.

 

  • 3-Jaw – The most universal of pullers, the 3-jaw puller has three articulating arms that have both internal and external hooks. You can use them to remove gears, pulleys, wheel hubs, all kinds of hard to remove parts. Jaw pullers come in several sizes and are inexpensive. Every garage should have three sizes of 3-jaw pullers in the drawer. Just like the tie rod tools, the center stud is threaded to do the hard work for you.

 

  • Balancer Tool – Late model Chevy and Chrysler engines have unique crankshaft damper/pulleys, which need to be removed for certain jobs. Much like a 3-jaw puller, this specialty removal tool has three hooks to latch onto the special locations on the balancer. These are forged steel and not quite a s versatile as the regular 3-jaw, but when you need it, you need it.

 

  • 2-Jaw – Sometimes you can’t fit three jaws on the part, so you need a 2-jaw puller. These jaw pullers are less commonly used, but helpful to have when you need it. The operation in the same manner as a 3-jaw.

 

  • Steering Wheel – Pulling the steering wheel is a complete pain, but with the right tool, it is not that bad. You might ask “when would I need to pull the steering wheel?” How about to replace a broken turn signal cam or correct the steering wheel position after replacing steering wheel components. A steering wheel puller typically has four slotted holes to match the common two and three hole spacing for steering wheels. The center stud has a free-spinning spindle on the end to keep it aligned. These kits also come with an assortment of bolts to match your wheel as well. Other uses for this tool include gears, small hubs and any other odd-shaped part with threaded holes around the center.

 

  • Pulley – The pulley installer is another must-have for any DIY garage. Most commonly used for power steering pumps, this puller uses a notched hub and eccentric ring with the ever-present center stud to grab the notch at the pulley’s center (most press-fit power steering pulleys have this) and pull the sucker off. This tool is also an installer for press-fit pulleys, the center stud threads into the pulley’s shaft and the large outer bearing is threaded on, pressing the pulley into place.

 

Armed with this information you will be able to get those stubborn press-fit parts replaced. Get more information about jaw pullers, please do not miss the professional pulling tools manufacturer – Maxclaw Tools Co., Ltd... Check out its product catalog and feel free to send inquiries to Maxclaw for more jaw pullers.

 

 

Article Source: http://knowhow.napaonline.com/a-guide-to-common-pullers-pulling-tools/

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To ensure that all of our customers, and your employees, have the most comfortable seating options possible. So, since people come in all shapes and sizes, the chairs do too.

 

What Are Big and Tall Chairs?

Big and tall executive chairs are designed for people who are more than 250 pounds or taller than 6 foot 4. You may also hear these chairs referred to as “big man chairs.” To accommodate users, tall chairs will have high backrests and usually have a slightly higher seat height adjustment range compared to standard office chairs. Chairs for users more than 250 pounds will often be wider and feature thicker padding. All big and tall chairs feature more durable bases, casters and frames.  If you select a chair with armrests, they will most likely be oversized and reinforced for the added weight that will be placed on them.

 

How Should I Choose My Big and Tall Executive Chair?

The first thing you will want to consider is the weight rating you will need for your chair. We feature chairs with weight ratings of 350, 400 and 500+ pounds. You will want to make sure you choose chairs that will be adequate for anyone who may be using them.

 

Note: Not all chairs will necessarily be rated for longer usage because they have higher weight limits.

 

After determining the weight rating for your chairs, you will want to take a look at the functions of each chair and figure out what you may need. These functions include:

 

  1. Seat Height Adjustment:

Easily adjust your office chair according to your height and the height of the desk you will be using. You will want to adjust your seat so your feet are flat on the ground and your knees are bent at 90 degrees. You also want to be at a height that allows your elbows to be bent at 90 degrees when typing.

 

  1. Seat Depth Adjustment:

You can adjust the depth of your seat to accommodate your upper leg length, which comes in handy when people of different heights will be using the same chair. You want the edge of the seat to be just behind your knees when you are seated in the appropriate position.

 

  1. Seat Angle Adjustment:

To ensure proper posture and adequate blood flow to your legs and feet you can adjust the angle of your seat. Adjusting the angle can also lighten the pressure on your lower back.

 

  1. Back Height Adjustment:

Adjusting the back of your chair, including the head rest and lumbar support, will allow you to sit in the most comfortable position for your neck and lower back.

 

  1. Back Angle Adjustment:

You can ensure the lumbar support rests comfortably on your back by adjusting the angle of your chair back.

 

  1. Tilt Lock:

Lock your chair into the tilt position that provides you the greatest comfort.

 

  1. Tension Control:

Increase or decrease the resistance of the chair’s tilt by using the tension control.

 

Once you determine the weight rating and functions for your new chairs, you will need to decide which upholstery will work best for your office setting; fabric, vinyl, anti-microbial/anti-bacterial vinyl, or leather. Depending on the chair you choose, there may also be multiple colors for you to pick from, making it easy to fit in with the style and feel of your office.

 

Final Thoughts

As with any office furniture you want to make sure you are choosing the pieces you think will work best in your environment. By purchasing big and tall seating you are ensuring comfort for all of your guests and employees and setting them up for success through their seating.

 

If you need more choice of big and tall executive chair, I recommend that you can visit the professional office chairs manufacturer – Fuh Shyan Co., Ltd.

 

Fuh Shyan specializes in producing kinds of office chairs including ergonomic chair, mesh chair, big and tall executive chair, waiting chair, office chair parts, etc. Get more details please do not hesitate to contact with Fuh Shyan immediately.

 

 

Article Source: https://www.btod.com/blog/2015/01/15/seating-for-all-sizes-your-buying-guide-for-big-and-tall-chairs/

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What is the Best Glue for Shoe Soles?

You should consider a shoe adhesive that will dry quickly, and cure strong and flexible. You should also ensure your adhesive is both water and temperature resistant, it will not be the best outcome if you stick your sole and then step in a puddle outside to find your sole separating again as your adhesive dissolves in water. Cement and Polyurethane based adhesives are best for shoe repairs as they dry flexible.

 

How to Fix Shoe Sole Separation?

If you have a shoe that has lost its sole, there is a simple and easy way to get it reaffixed, without having to take it to a shoe repairer and pay a lot of money.

 

  • Clean the shoe and sole surfaces which you need to adhere together.
  • Remove the sole completely; this will make it a lot easier to work with the sole.
  • Apply your adhesive to the sole and the bottom of the shoe you are looking to repair.

 

Lastly, leave it to set.

 

What Glue Do Cobblers Use?

Cobblers use adhesives that are both strong and flexible when bonded. They use an adhesive that is temperature and water resistant and will bond securely to the sole of your shoe. There is not one main adhesive that is used; cobblers will use different adhesives for different issues.

 

Will Gorilla Glue Work On Shoe Soles?

Gorilla is a polyurethane waterproof adhesive that will no doubt work on the soles of your shoes. It is an industrial strength adhesive that will provide a very strong bond and is designed to work on rubber as well as soft material. There are two different types of Gorilla Glues, there is the original adhesive and then you get the super gorilla adhesive. Some Gorilla Glues have a foaming effect when used. It has been used effectively for adhering peeling soles or fixing damaged shoes.

 

Gorilla Glue VS Shoe Goo?

Gorilla is designed to bond and seal to most any type of material including footwear materials such as leather, rubber and more. It is temperature and water resistant, it can be a little difficult to apply as it expands when applied and you need to be aware of any spills or drips that might occur when using it.

 

Shoe Goo on the other is specifically designed to be used on shoes. It will work on other materials but that is not its main objective. It will work on soles as well as uppers and all footwear materials such as leather, canvas, and rubber. It dries flexible and waterproof and is extremely durable. It is one of the favorite glues for gluing your sneakers.

 

How Do You Fix The Sole of A Shoe?

There are a few easy steps to follow when looking to fix the sole of your footwear items.

 

  1. Prepare Your Shoe

You need to ensure that your broken shoes are both clean and dry before starting to repair your shoes. You can also roughen up the surfaces of the sole and the bottom of the footwear to enable the adhesive to get a better bond.

 

  1. Apply

Make sure you apply the shoe adhesive glue to the surface and then let it set for the amount of time stipulated on your specific type of adhesive you are using.

 

  1. Curing Time

Each product will have a different curing time for their product. Some will set almost immediately or in only a few minutes.

 

What Kind of Glue Is Used To Make Shoes?

Shoe adhesive glues that are used to make shoes are generally heat and cold resistant as well as being waterproof (click here for water shoes). When drying they must remain flexible in order to allow the footwear to be comfortable. They will give you protection on the footwear against abrasion and also cope with stress to the joints. Industrial style adhesives that are both strong and flexible are used when making shoes.

 

Different Types of Glue to Repair Your Shoes?

There are four basic types of footwear adhesive that are used to repair shoes and we take a look at them for you.

 

  1. Urethane Rubber

This type of adhesive is heat and cold resistant as well as being waterproof. Remaining flexible it is best for repairing soles that have separated or have been damaged.

 

  1. Neoprene Cement

Neoprene Cement adhesive offers an extremely strong bond, is very fast drying and is non-corrosive. This is the best footwear adhesive for all your athletic sneakers or shoes with rubber soles.

 

  1. Super Glues

This is a very popular type of adhesive as it is extremely fast drying and requires very little curing time. It bonds permanently and it is easily available. It can be used to not only repair leaking soles, it also affixes the peeling soles.

 

  1. Epoxy Glues

This is an adhesive that will bond on almost any material and is often used for footwear repair. Be sure to choose an epoxy adhesive with less catalyst, as this will avoid cracking and brittleness. This type of shoe adhesive takes a long time to dry, up to 24 hours minimum drying time is needed to get the correct bond that is strong and stable.

 

Conclusion

Having to take your shoes into a footwear repairer is not only expensive it is also time-consuming. With the best adhesives that are available on the market, it is easy and quick to fix your shoes at home on your own. There are a number of glues that are designed specifically to help you repair your shoes, make sure you choose one that offers an effect bond, offers flexibility as well as being temperature resistant as well as waterproof and follow the manufacturer’s instructions when apply and curing the adhesive.

 

Learn more information about shoe adhesive please do not miss the website of Great Eastern Resins Industrial Co. Ltd. – the company is the first shoe adhesive manufacturer in Taiwan, and has promoted water based adhesive for 20 years. Attributing to the various applications for sporting, leather, canvas, casual, sandal, men, working, snow, riding, boot, and beach shoes, its quality of shoe cement glue is popularly appreciated by shoe manufacturers.

 

Article Source: https://shoeadviser.com/accessories/best-glue-for-shoes/

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What is Sheet Metal Machining?

Sheet metal machining is a classification of manufacturing processes that shape a piece of sheet metal into the desired part through material removal and/or material deformation. Sheet metal, which acts as the workpiece in these processes, is one of the most common forms of raw material stock.

 

The material thickness that classifies a workpiece as sheet metal is not clearly defined. However, sheet metal is generally considered to be a piece of stock between 0.006 and 0.25 inches thick. A piece of metal much thinner is considered to be “foil” and any thicker is referred to as a “plate”. The thickness of a piece of sheet metal is often referred to as its gauge, a number typically ranging from 3 to 38. A higher gauge indicates a thinner piece of sheet metal, with exact dimensions that depend on the material. Sheet metal stock is available in a wide variety of materials, which include the following:

 

  • Aluminum
  • Brass
  • Bronze
  • Copper
  • Magnesium
  • Nickel
  • Stainless steel
  • Steel
  • Tin
  • Titanium
  • Zinc

 

Differences of Sheet Metal Machining Processes

Sheet metal machining processes can mostly be placed into two categories – forming and cutting.

 

Forming processes are those in which the applied force causes the material to plastically deform, but not to fail. Such processes are able to bend or stretch the sheet into the desired shape.

 

Cutting processes are those in which the applied force causes the material to fail and separate, allowing the material to be cut or removed. Most cutting processes are performed by applying a great enough shearing force to separate the material, and are therefore sometimes referred to as shearing processes. Other cutting processes remove material by using heat or abrasion, instead of shearing forces.

 

Sheet Metal Parts Can Be Used For…?

Sheet metal can be cut, bent, and stretched into a nearly any shape. Material removal processes can create holes and cutouts in any 2D geometric shape. Deformation processes can bend the sheet numerous times to different angles or stretch the sheet to create complex contours. The size of sheet metal parts can range from a small washer or bracket, to midsize enclosures for home appliances, to large airplane wings. These parts are found in a variety of industries, such as aircraft, automotive, construction, consumer products, HVAC, and furniture.

 

Recommend Sheet Metal Parts Supplier

About this question, I can recommend a company to you – that’s H&C Champion Inc.

 

The company can provide best quality sheet metal machining service for customers. If you need more customized sheet metal parts, please do not miss H&C Champion.

 

 

Article Source: http://www.custompartnet.com/wu/sheet-metal

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Valve actuators are a type of control valve, and there are many options available to meet plant-wide and individual automation requirements. While simple in concept, consisting of a box with an input, output, and a mechanism to operate a valve, there are actually quite a few considerations in choosing the right valve actuator. And because the valve actuator plays a more significant role in a valve’s overall performance in the control loop, it’s a decision that engineers shouldn’t take lightly.

 

In this guide, we’ll discuss the two primary types of valve operation, types of valve actuators, important valve actuator functions, valve sizing information, and the key considerations in selecting the right valve actuator.

 

Types of Valve Operation

There are dozens of types of control valves. From the perspective of a valve actuator, however, there are two primary types of valve operation. Understanding how a valve operates is the first step in choosing the appropriate actuator.

 

  • Rotary (Quarter-Turn) Operation – This includes plug valves, ball valves, and butterfly valves. Quarter-turn dampers would also fall into this category. These types of valves are generally easier to fit with the appropriate actuator as the operation is relatively simple, requiring a 90-degree rotation at the appropriate torque.

 

  • Multi-Turn Operation – This group of valves have either rising non-rotating stems or non-rising rotating stems and require multiple turns to move the valve closure element from the open to the closed position. Some examples of the types of valves found in this group include globe valves, knife gates, gate valves, sluice gates, and others.

 

Types of Valve Actuators

Just as there are many types of valves, there are several specific types of valve actuators. Most, however, fall into a few common categories, based on the type of power applied and the type of movement required:

 

  • Pneumatic And Hydraulic Actuators (Fluid Power) – Quarter-Turn – These types of actuators are versatile and can be used where electric power isn’t readily available or in applications in which simplicity and reliability are prioritized. They also have a wide range of capabilities, from smaller actuators delivering a few inch pounds of torque to the largest actuators, which can deliver a million inch pounds of torque or more. Most pneumatic and hydraulic actuators use a cylinder coupled with some mechanism that turns the linear motion generated in the cylinder to the quarter-turn motion required for valve operation. Adding an opposing spring allows for positive shut-down in emergencies.

 

  • Pneumatic And Hydraulic Actuators (Fluid Power) – Multi-Turn – When multi-turn output is required for operating a linear-type valve, such as a gate valve or a globe valve, fluid power actuators are a common solution. While electric actuators are often used for these types of valves, pneumatic and hydraulic actuators are viable options for applications in which electricity isn’t readily available.

 

  • Electric Actuators – Multi-Turn – These types of valves are among the most common and the most dependable. They’re capable of quickly operating some of the largest valves, and they’re powered by a single or three-phased electric motor that drives a combination of level gears and spurs. Subsequently, these gears and spurs drive a stem nut, which engages the stem of the valve to open or close it. They often include a declutching mechanism and a hand wheel that allows for manual operation in the event of a power failure.

 

  • Electric Actuators – Quarter-Turn – Similar in design to multi-turn electric actuators, the primary difference is that the final element is positioned in one quadrant offering 90 degrees of rotation. These types of actuators are compact and often used in smaller valves, and because they have lower power requirements, they can be configured with an emergency power supply (such as a battery) for fail-safe operation.

 

  • Manual Actuators – Manual actuators use levers, wheels, and/or gears to facilitate movement. Manual actuators differ from automatic actuators, as automatic actuators have an external power source providing the force and motion needed to operate a valve automatically or remotely. For many valves, manual operation isn’t an option, either because the application includes valves in remote pipelines or due to the sheer force required for operation. Additionally, manual actuators aren’t a practical solution for valves located in toxic or hostile environments, and they’re not as useful in applications requiring the safety precaution of allowing for immediate shutdown.

 

Pneumatic and hydraulic actuators are described together and operate similarly; however, they differ slightly in how the cylinder is moved. Hydraulic actuators move the cylinder with an incompressible liquid from a pump, while pneumatic actuators move the cylinder using pressurized air. Pneumatic actuators aren’t as practical for large equipment that requires large bore cylinders because of compressed air consumption.

 

Hydraulic actuators, on the other hand, can have a higher cost per unit compared to pneumatic and electric actuators. They also tend to leak fluid, and they require a variety of companion parts including motors, pumps, release valves, fluid reservoirs, heat exchangers, and noise-reduction equipment.

 

Valve actuators can also be categorized as diaphragm actuators, direct-acting and reverse-acting actuators, direct-acting diaphragm actuators, field-reversible multi-spring actuators, and piston actuators, although there are other types as well.

 

Important Valve Actuator Functions

All valve actuators must perform several functions including:

 

  • Moving the valve closure member to the appropriate location. A closure member is typically a plug, disc, or ball, and an actuator must have enough force to move it even in difficult or undesirable conditions. Additionally, it has to be fitted with the necessary controls to direct it.

 

  • Holding the valve closure member in position. Once in the desired position, a valve actuator must be able to hold it in place. In some applications, such as throttling applications, this requires a robust spring or fluid power or mechanical stiffness to keep the closure member securely in place.

 

  • Seating the valve with enough torque to meet desired shutoff specifications. Some types of valves may require special accessories for actuator sizing to sustain enough torque to maintain closed positions.

 

  • Having a failure mode. A failure mode needs to occur in the event of a system failure. Depending on the application, failure mode may be as-is, fully closed, or fully open.

 

  • Having the proper rotational value. Some valves require a certain amount of rotation, often 90 or 180 degrees. Multi-ported valves often require more than 90 degrees of rotation, and electric actuators are usually preferred for applications requiring rotation of greater than 180 degrees, as they’re not limited in rotation mechanically.

 

  • Providing the right operating speed. The cycle speed of an actuator can be regulated with control circuit elements, but cycle speeds less than half of the typical actuator cycle time require careful valve selection. Specially prepared pneumatic actuators may be required for high cycle speeds without risking damage to valve parts.

 

Considerations in Choosing a Valve Actuator

Now that we’ve covered the basic types of valves and valve actuators, as well as the main functions valve actuators must perform, there are a few important considerations to weigh when selecting the appropriate actuator for your application. There are a variety of factors to consider, ranging from usage factors, to sizing, supply pressure requirements, safety and reliability, cost considerations, and more.

 

Recommend Valve Actuator Manufacturer

If you have any interest in more information about valve actuator, I recommend that you can try to visit the website of Sun Yeh Electrical Ind. Co., Ltd. – it is one of the leading valve actuator manufacturers in Taiwan. The company can provide high quality electric valve actuator, spring return valve actuator, heavy duty electric actuator, motorized valve actuator, and much more products for customers. Get further details, please do not hesitate to check out its product catalog and send inquiry to Sun Yeh.

 

 

Article Source: https://www.mpofcinci.com/blog/how-to-select-a-valve-actuator/

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Choose Mountop As Your Pump Vane Supplier

 

Established in 1977, Mountop Precision Industrial Co., Ltd. began by providing heat-treatment for high-speed steel and steel molds. In 1978, it was actively involved in research and development and the established tool factory to produce cold and hot forging punches. In keeping with current trends toward automation, Mountop Precision has continually upgraded its products precision and aggressively produced smaller, shorter, thinner and lighter vane products.

 

In order to supply products reaching the highest standard of micro-tolerances and upgrades its manufacturing facilities, Mountop Precision has imported equipment and instruments from Switzerland, Europe and Japan to become a leading supplier of hydraulic pump vanes, rotary compressor vanes, and various vanes.

 

Below, I will bring you to learn some product information about Mountop’s pump vanes:

 

Features of Mountop Pump Vanes

  1. Rotary Compressor Pump Vane:

This type of vane is suitable for air-conditioners, dehumidifiers and refrigerators.

  1. V&VQ Series Intra Vane
  2. Denison Hollow Vane:

It is suitable for concrete mixing machines, metal press machines, press machines and cargo ships.

  1. Hydraulic Pump Vane:

This pump vane is suitable for centerless grinding machines, CNC lathe machines, special purpose machines, turbine ship engine room, turbine motors, diesel engines and baling press machines.

  1. Power Steering Pump Vane:

This type of pump vane is suitable for engines of luxury cars and trucks.

  1. Motor Vane:

It is suitable for heavy-duty power (low-speed high torque) motors.

 

Excellent Mountop products are provided for domestic and overseas well-known air-conditioning compressor and hydraulic pump manufacturers, and the overseas markets include Japan, Korea, India, Thailand, Mainland China, Southeast Asia, the United States, North America, Canada, and the European countries, and etc. By attending international exhibitions, Mountop makes itself available to directly contact with customers to provide more competitive products as well as more rapid and convenient services.

 

If you need more information about Mountop’s various vanes, try to watch the YouTube video below. And feel free to check out its website and send inquiry to let Mountop know your requirements.

 

 

Mountop Precision Industrial Co., Ltd.

No. 1, Alley 36, Lane 229, Chung Shan Rd., Sec. 1, Wu Jih Dist., Taichung City , Taiwan, R.O.C.

TEL: 886-4-23377188

FAX: 886-4-23370317

E-mail: vaneinfo@mountop.com.tw

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A CNC (Computer Numerical Control) machine is used extensively in a manufacturing business or a precision cutting business. These machines have successfully replaced traditional machines such as center lathes, shaping machines, routers, vertical millers etc. These machines do not require a trained engineer to operate them and can be used continuously for 24 hours a day. Using these machines, we can manufacture multiple products having exact same dimensions and with enhanced precision. However, all these advantages do come with a price. The CNC machines are extremely costly and it’s unwise to invest too much in overhead costs without knowing when or if you’ll fulfill enough orders to pay for operational investments. Therefore, manufactures prefer to buy used CNC machines, instead of investing a fortune in a new one. It is profitable for the production as well especially if the used machinery has been well maintained.

 

CNC machines are sophisticated pieces of equipment and even in a used machinery market they come with a relatively higher price tag. As a buyer, one needs to make sure that the machine is in a good condition so that the performance and efficiency of the machine provides the justification of its cost.

 

These a few factors that a buyer should consider before going ahead –

 

  1. Do Your Homework Before Buying Second Hand CNC Machines

Those who are interested in a CNC machine need to do their homework before deciding which one to buy. CNC products range from milling & lathe machines to grinders. For this reason, it is important to know your needs and make sure that the CNC machine you purchase is capable of meeting those needs.

 

  1. Age Inspection of Used CNC Machine

When CNC machines are properly cared for, they can last for many years. This is one of the first things you should consider when looking at a used CNC machine. Obviously, it’s best to purchase the newest model you can afford, but older models can still function at peak capacity if they have been properly cared for and received regular maintenance and cleaning.

 

  1. Speed Inspection

If you’re running a big operation where fast production speed is crucial, you should be certain that the used machine you’re looking at is capable of meeting the high demands of your business. A second hand CNC machine can be more than capable of producing what you need it to, but when you know that you’ll be using it often and running it for long periods at a time, you should avoid purchasing one that was used for the same reason. If this is the situation you’re in, then you should focus your search on CNC machines with a low hour count.

 

  1. Check The Spindle

Run the spindle at multiple RPMS (50, 100, 1000, 5000, Max) and check for any noises.

 

  1. Hold Your Hand On All The Axes X,Y, Z And Move Them

Keep your hand on the casting and put the machine in rapid mode at 50 percent and move them. Try to feel if there’s some oscillation. Listen for a low growl or any abnormal noise while operating in the rapid mode. This could mean that there are bad bearings, ball screw and worn ways. Listen to each of the servo motors for a high pitch humming. This could mean there are some problems as well.

 

  1. Maintenance Records

You should always make sure that a used CNC machine has been well maintained before you purchase it. You should ask the seller how often is has received cleaning and routine maintenance, and, if possible, you should also ask to see the proof of services performed. Sellers don’t always have these documents on hand, but if they do, they can go a long way toward putting your mind at ease. Also ensure that the machine has been upgraded to suit your needs, or that it is capable of being upgraded at all.  If you plan on performing complex machining, you may require more advanced controls than what were originally included.  Make sure to research the availability of replacement components and upgradable parts.

 

Recommend Second Hand Machinery Supplier

If you are looking for reliable used CNC equipment supplier, I recommend that you can try to visit the website of SEHO Industry Co., Ltd.

 

Founded in 1985, this company is the supplier and manufacturer of new and used CNC machinery. With over 32 years’ experiences, SEHO can offer the most professional and best quality CNC equipment and after service to clients.

 

Their second hand CNC machinery includes double column machining center, vertical machining center, and metal-working machinery etc. Furthermore, SEHO adopts stock supply, you can try to visit their website to check out the machine that can quickly meet your demands of urgent orders.

 

Get more information about second hand machinery, please do not hesitate to contact with SEHO Industry or visit VENDAXO for more related articles.

 

Article Source: VENDAXO

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Gear pumps are a popular choice in the hydraulics industry. Generally reliable and inexpensive, gear pumps have been getting the job done for decades. What could go wrong? Depending on the specifications of the machine you’re building, here are five reasons you may want to consider moving to piston pumps.

 

  1. Higher Horsepower

The higher the horsepower (hp) on your machine, the more likely you will save significant fuel by switching to a piston pump. Gear pumps are fixed displacement—continually providing the same flow. As horsepower increases, more flow is required, and the gear pump wastes more energy by not varying flow based on demand.

 

  1. Efficient Multitasking

As more is demanded of every machine, original equipment manufacturers (OEMs) are adding functions. Each function often requires different flow which a piston pump can adjust to, providing efficient use of power resulting in less wasted energy than a constant flow gear pump.

 

  1. Increased Control

Gear pumps can only be controlled through valving and a manifold, whereas piston pumps are available with multiple control options. A few of the options available are load sense, pressure compensation, electronic displacement, torque, electronic inverse proportional pressure and remote pressure control. With these controls, moving from a gear to a piston pump can help machine designers eliminate components and increase design flexibility.

 

  1. Improved Cooling

Cooling needs vary widely from machine to machine, depending on duty cycle, operating environment and more. If the cooling needs are variable, shouldn’t the cooling system be variable as well? With a piston pump and inverse proportional pressure control, a fan drive system can react to temperatures, speeding up fan speed as oil temperature rises and slowing down when it cools.

 

  1. Efficiency

Ultimately, each point listed here circles back to machine efficiency. Continuous flow works in some equipment, but as regulations are requiring more efficient machines, variable piston pumps can help designers accomplish higher horsepower, more work, and increased control and improved cooling without sacrificing efficiency.

 

If you need more information about hydraulic piston pump, I recommend that you can visit the website of YEOSHE Hydraulics Technology Co., Ltd. – the company is eager to provide the best hydraulic products to customers. YEOSHE hydraulic pump, hydraulic valves, gear pump, and solenoid valve offer a unique combination of proven technology and innovative design that translates directly into reliable performance, and makes your system work perfect. Get more details, please do not hesitate to contact with YEOSHE.

 

 

Article Source: MOBILEHYDRAULICTIPS

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Casters are the best way to get seemingly immovable objects mobile again. If you have a useful piece of medical equipment that needs to be moved around, then all you need to do is adhered casters to the bottom of it and mobility is achieved!

 

That’s the positive aspect of a caster – the negative is that caster-mounted objects can sometimes seemingly have a life of their own and are reluctant to stay in one place – especially if they are resting on non-level floors. Additionally, if a caster-mounted item is heavy, it can sometimes become difficult to maneuver.

 

The Solution: Casters with Brakes

The solution to this over-mobility problem is of course, the humble brake. A brake on a caster performs the same function as a brake on any other wheeled device – to prevent or lessen traction or to prevent movement altogether.

 

When it comes to caster brakes, there are two main options – compression brakes and decompression brakes.

 

How a Compression Brake Works

You might like to think of a compression brake as a kind of measuring scale – the old-style sprung ones with a platform on top and a dial on front. The more pressure that is applied to the platform, the further the pointer spins around the dial.

 

A compression brake works in very much the same manner – without the dial of course. The brake is sprung to provide resistance, and that resistance is countered by the weight that the caster supports. Once the weight is enough to totally negate the resistance, the brake is triggered, locking the caster into place and so preventing mobility.

 

Compression brakes can be fitted to both fixed and swivel brakes, and in the latter case the swivel motion is locked as well as the linear motion. To move a caster-mounted item that is locked by compression brakes you simply have to lift the object slightly in order to prevent the object’s weight from triggering the brake.

 

How a Decompression Brake Works

As you might imagine, a decompression brake works in entirely the opposite way as a compression brake. Normally, an item fitted with compression brakes cannot be moved as there is not enough weight to counter the necessary resistance. Once weight is applied, then the brakes unlock and the compression casters become mobile.

 

This is useful when a caster-mounted platform is used to move other objects. While the platform is not loaded, it will remain stationary. However, once sufficient weight has been placed on the platform, it can then be moved around. Once the load is removed, the platform becomes immobile again. This mechanism is designed to make caster-mounted platforms and other items safe to load and use, as they will not move about while being loaded.

 

Best Caster Wheel Manufacturer for You

If you need more information about compression caster, please do not hesitate to check out the website of ENJOYING GO Co., Ltd. You can find a variety of PU caster wheels on their product pages including chair caster wheels, design caster, locking caster, and braking caster, etc. Get more details, try to send inquiries or contact with ENJOY.

 

Article Source: http://www.douglasequipment.com/brake-casters/differences-compression-decompression-brake-casters/

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