ROEMHELD Threaded-Cartridge Work Supports – Air Advanced, B1.950 (3800, 9400, 23000 lbs)

ROEMHELD Power Workholding

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Product Information

ROEMHELD Threaded-Cartridge Work Supports – Air Advanced, B1.950 (3800, 9400, 23000 lbs)

7250 psi max

Single Acting

Air Advanced

Work Supports automatically adjust to the proper height for supporting a workpiece, then lock securely to become fixed rests. Air-advanced Work Supports allow fine-tuning contact force using a Fine Air Pressure Regulator, and provide separate control of plunger advance. The top-flange version shown here allows space-saving low-height installation using either standard fittings or manifold mounting. These supports have high load capacities yet are extremely compact and easy to install. Dual mounting capability allows installing with either standard fittings on the back side or manifold mounting from below. Highly corrosion resistant with stainless steel plunger and internal components. Metallic wiper and FKM wiper together provide excellent protection against dirt and coolant entry.

Available in three sizes, inch or metric threads, with the following load capacities at 7250 psi:

3800 Lbs

9400 Lbs

23000 Lbs

Application Information

Air-advanced Work Supports have a plunger that is normally retracted for clear loading. Applying air pressure gently advances the plunger to the workpiece with light, adjustable force. Applying fluid pressure locks the plunger securely.

Documents

B1.950

Data Sheet

Support Action (Air Advanced)

Plunger is normally retracted for clear workpiece loading and unloading. Applying air pressure gently advances the plunger to the workpiece, where it contacts with light force. A Fine Air-Pressure Regulator, Air Extractor Dryer, and Air Clamping Valve are required for air control (see Related Products below). Fine-tune contact force using the air regulator. When fluid pressure is applied, the precision sleeve grips the plunger, locking it securely. The plunger retracts again when fluid pressure and air pressure are released. These Work Supports can also be used as "Air Extended" supports by leaving air pressure constantly on.

Locking height is repeatable within +/-.0002". Such excellent repeatability is possible because of two design features: 1) a precision sliding-fit pressure sleeve holds the plunger absolutely vertical even while unlocked, avoiding any inaccuracy due to locking a tilted plunger, and 2) locking force is entirely radial, so the plunger remains absolutely stationary during the locking process.

Design Considerations

Supporting underneath a clamp

Do not use the plunger to lift loads, or support side loads. The support plunger must always be protected against penetration of contaminants by the plastic plug furnished or a contact bolt (order separately).

When supporting underneath a clamp, use a Sequence Valve to delay clamping until the Work Support has reached sufficient load capacity to resist the clamping force. Support load capacity should be at least 2 times clamping force at all times, to resist not only static clamping force, but also dynamic forces due to clamping-arm momentum and machining forces.

Mounting & Fluid Supply

Screw clamp into fixture up to the body hex. Threaded-cartridge Work Supports have O-ring seals on their outside diameter, so they require a precision mounting hole. Carefully follow hole-preparation instructions in the drawings. Fluid passages must be drilled exactly as shown in the drawings. Do not use NPT fittings.