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FAQ's for Pneumatic Business Unit

Q. How can I obtain three fixed positions using standard cylinders?
Ans: Use two cylinders of the same stroke, joined back-to-back or rod-to-rod and operate by individual control valves.

Q. Can a standard cylinder be operated in the slow speed range?
Ans: At very slow speeds hydro-pneumatic control is recommended.

Q. What does ISO stand for?
Ans: ISO stands for International Standards Organization an International body which formulates various standards which equipment should conform to allowing for interchange of products between manufacturers.

Q. Do cylinders and valves require lubrication?
Ans: Most Schrader cylinders and valves are designed for use in non-lube operation. Airline lubrication however will increase the service life. If lubrication is used, it must be maintained for the service life of the product.

Q. Are your cylinders available in non-standard strokes?
Ans: Yes, we can make a cylinder to order in any stroke length you require up to a design maximum.

Q. What is the longest stroke we can use on a particular cylinder?
Ans: This depends on mounting and loading style.

Q. Do reed switches come with standard cylinders?
Ans: No, they need to be ordered separately. But these cylinder to be called as reed switch operated Cylinders.

Q. What force can a cylinder exert?
Ans: This depends on the air pressure applied to the cylinder piston.

Q. What is the maximum temperature at which Schrader cylinders can operate?
Ans: The maximum for cylinders with standard seals is 80°C. For cylinders with Viton seals it is 180°C.

Q. How can I slow down my cylinder?
Ans: By using flow regulators or speed controllers to control the exhausting air from the cylinder thus reducing the speed.

Q. I want to stop a cylinder at some point in its stroke - how can I do this?
Ans: You can use a 5 port, 3 position valve which has a closed centre position. This will stop the cylinder in a mid position however the positional accuracy of using this method is not good. And Other method is using positioner to control cylinder stroke with respect to input signals.

Q. I have a competitor's product part number, how do I find the equivalent Schrader part number?
Ans: Please contact us and we'll be happy to advise you of the most suitable equivalent for your application. When selecting an equivalent there are many features that may have to be taken into consideration these include: function, conformity to a standard, port connections, envelope size, orientation, performance, duty, materials of construction, pressure rating and power rating.

Q. Do you offer cylinders that are interchangeable with other makes or brands?
Ans: Yes, VDMA24562, ISO6431 and from 12mm to 200mm bore. Also. A brand of Compact Cylinder interchangeable with other brands.

Q. Do you offer any stainless steel products?
Ans: Yes, cylinders and mountings, ball valves and air service units.

Q. What is the largest diameter cylinder you offer?
Ans: 14"which is available to order, & Next range pl.contact Regional Sale Manager or Marketing Dept.

Q. Where can I get datasheets?
Ans: Datasheets are available on the Website Find the product you are looking for, and click on the link. For example, VDMA Comact cylinders.

Q. How do Single Acting cylinders work?
Ans: They have a power stroke in one direction only with a spring, gravity or other external force to return the rod.

Q. What is the advantage of using a Double Acting cylinder?
Ans: As they use compressed air to power both the outstroke and the in stroke, superior speed control is possible. Double Acting cylinders include Non-cushioned, and Adjustable cushioned types.

Q. What are the main uses of Rotary Actuators?
Ans: Used for turning components, operating process valves, as they can provide angular rotation up to 90 degrees.

Q. What is the most suitable cylinder to use in a limited space where only a short stroke is required?
Ans: Compact Cylinder & "CA & CB Series Cylinders.

Q. What are Bellows?
Ans: Bellows is used for to protect dust on piston rod.

Q. Why use a cushioned design?
Ans: Cushioning protects a cylinder and load by absorbing the energy at the end of stroke. This results in progressive deceleration and gentle contact between the piston and end cover.

Q. I need a cylinder with a long stroke, how can I be sure the piston rod won't buckle?
Ans: Some applications require very long stroke cylinders. If there is a compressive axial load applied to the piston rod, care must be taken to ensure that the system parameters of rod length, diameter and load are within the safety limits to prevent buckling. In this case while manufacturing Cylinder Provided with stop to preventing.

Q. What Air cylinders do you offer?
Ans: Schrader Offer a wide range of air cylinders; please use the online catalogue to browse our product range.

Q. Do you have any positioners?
Ans: Yes, these are classified under Specialty products and can be found using the online catalogue.

Q. What is the smallest diameter cylinder you offer?
Ans: 12 mm.

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