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

ROEMHELD Power Workholding

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Product Information

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

7250 psi max

Single Acting

Spring Extended

Work Supports automatically adjust to the proper height for supporting a workpiece, then lock securely to become fixed rests. The threaded-body Work Supports shown here have high load capacities, yet are amazingly compact. Manifold mounting capability allows space-saving low-height installation.

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

3800 Lbs

9400 Lbs

23000 Lbs

Documents

B1.950

Data Sheet

Support Action (Spring Extended)

Plunger is normally extended by light spring force. When the workpiece is loaded, its weight depresses the plunger to the proper height. When fluid pressure is applied, the precision sleeve grips the plunger, locking it securely.

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.

Material

Click here for detailed material and finish specifications.

California residents click here for Prop 65 information.

ITEM	MATERIAL	HEAT TREAT	FINISH
Plunger	Steel	Case Hardened	-
Body	Steel	-	Black Oxide