ROEMHELD Block-Type Work Supports – Air Advanced, B1.921 (1600, 2800, 6300 lbs)

ROEMHELD Power Workholding

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Product Information

ROEMHELD Block-Type Work Supports – Air Advanced, B1.921 (1600, 2800, 6300 lbs)

7500 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 block-type Work Supports shown here are very compact, and provide many plumbing options, including manifold mounting.

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

1600 lbs (Metric only)

2900 lbs (Inch & Metric)

6500 lbs (Metric only)

Application Information

Block-type Work Supports are easy to mount horizontally, as in this example of a slitting operation.

Documents

B1.921

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). 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

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

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

Several possible mounting methods: 1) insert two socket-head cap screws from the plunger end, through the two counterbored holes parallel to the plunger; 2) insert two socket-head cap screws from the bottom end, through the two counterbored holes parallel to the plunger; 3) insert two socket-head cap screws through the two broad-side holes perpendicular to the plunger. 1/4" BSPP port. For optional manifold mounting, use either the manifold port at the bottom end or the manifold port on the broad side by unscrewing the sealing plug and installing a CLR-3000-347 O-ring (also install a CLR-810-F Port Plug in the 1/4" BSPP port). Do not use NPT fittings.