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

ROEMHELD Power Workholding

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Product Information

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

7250 psi max

Single Acting

Fluid Advanced

Work Supports automatically adjust to the proper height for supporting a workpiece, then lock securely to become fixed rests. Fluid-advanced Work Supports provide extra loading clearance and are ideal for workpieces that are too light to depress a spring-loaded plunger. 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

Application Information

Fluid-advanced Work Supports have a plunger that is normally retracted for clear loading. Applying fluid pressure gently advances the plunger to the workpiece then automatically locks it securely.

Documents

B1.950

Data Sheet

Support Action (Fluid Advanced)

Plunger is normally retracted for clear workpiece loading and unloading. Applying fluid pressure gently advances the plunger to the workpiece, where it contacts with light spring force. As fluid pressure increases, the precision sleeve grips the plunger, locking it securely. The plunger retracts again when pressure is released.

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

If the workpiece is light enough that plunger contact could lift it, use a Sequence Valve to delay advancing the work support until after the workpiece is clamped. 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