ROEMHELD Threaded-Body Work Supports – Fluid Advanced, B1.943 (1460, 3400, 5300, 9400 lbs)

ROEMHELD Power Workholding

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Product Information

ROEMHELD Threaded-Body Work Supports – Fluid Advanced, B1.943 (1460, 3400, 5300, 9400 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 version shown here is amazingly compact. Manifold mounting capability allows space-saving low-height installation. Highly corrosion resistant with stainless steel plunger and internal components. Metallic wiper and FKM wiper together provide excellent protection against dirt and coolant entry. Hardened contact bolt furnished.

Available in four sizes, with the following load capacities at 7250 psi:

1460 Lbs

3400 Lbs

5300 Lbs

9400 Lbs

Application Information

A specially designed metallic wiper edge effectively protects the FKM plunger wiper from hot, abrasive chips.

Documents

B1.943

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.

Optional Pneumatic Contact Control

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 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

Install Work Support directly into a flat-bottom tapped hole in the fixture – see drawings for hole-preparation instructions. Alternatively, inch-size Work Supports can be installed in a Mounting Base. In both cases, hydraulic sealing is accomplished by a Sealing Washer (furnished) placed directly underneath the support. Tighten to the recommended seating torque of 50 ft-lbs. Fluid passages must be drilled as shown in the drawings. Do not use NPT fittings.

Material

ITEM	MATERIAL	HEAT TREAT	FINISH	DFARS	RoHS
Plunger	Steel	-	Case Hardened	✔	✔
Body	Steel	-	Black Oxide	✔	✔
Sealing Washer	Delrin	-	-	✔	✔

Click here for detailed material and finish specifications.

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