ROEMHELD Top-Flange Work Supports – Spring Extended, B1.9503 (3800, 9400, 23000 lbs)

ROEMHELD Power Workholding

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Product Information

ROEMHELD Top-Flange Work Supports – Spring Extended, B1.9503 (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 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, with the following load capacities at 7250 psi:

3800 Lbs

9400 Lbs

23000 Lbs

Application Information

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

Documents

B1.9503

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 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 Connection

Dry Machining

No air venting required

Machining with Coolant

Air venting via plastic hose or metal tubing (unscrew air vent filter first)

Machining with Coolant

Air venting via drilled manifold passage (unscrew air vent filter and install port plug fitting)

Fasten support with three socket-head cap screws. For manifold mounting, the mounting surface must be ground flat to ensure proper O-ring sealing. Two 1/4" BSPP ports, one for hydraulic pressure and one for air venting. For applications using work supports in flood coolant, an air-vent line is required to prevent drawing coolant into the support. For optional manifold mounting, use the O-ring ports underneath instead of the standard ports. Unscrew the sealing plug in each O-ring port and install a CLR-3000-347-SW O-ring (also install a CLR-810-F Port Plug in each 1/4" BSPP port). 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 and Internal Components	Stainless Steel	-	-
Body	Steel	-	Black Oxide
Plunger Wiper	FKM	-	-