Optional Mounting Base
(USA only)
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7500 psi max
Single Acting
FEATURES: Work Supports automatically adjust to the proper height for supporting a workpiece, then lock securely to become fixed rests. Support plunger is held by a precision sliding-fit pressure sleeve that provides incredible accuracy and repeatability. The mini threaded-body version shown here is amazingly compact. Manifold mounting capability allows space-saving low-height installation. Hardened contact bolt furnished.
SIZES: Available in two sizes, with USA or metric threads — see Dimensions page for part numbers. Load capacity at 7500 psi:| | 1500 Lbs (USA & Metric) | | | 2200 Lbs (Metric only) |
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.
ACCURACY: Height repeatability within +/-.0002". Such excellent repeatability is possible because of two design features: 1) the 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. Elastic deflection of the plunger is only .00016" per 100 lbs machining load.
DESIGN CONSIDERATIONS: 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: Several possible mounting methods: 1) install support directly into a flat-bottom tapped hole in the fixture – see drawings for hole-preparation instructions; 2) install support into a Mounting Base or Modular Work Support Adaptor, for vertical mounting; 3) install support into a Mounting Block, for horizontal mounting; 4) install support into a Feeder Cap and mount through a fixture wall (secure with a Jam Nut). In all 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 CONNECTION: For manifold mounting, fluid passages must be drilled as shown in the drawings. Do not use NPT fittings.
CONSTRUCTION: Plunger > Steel, case hardened. Body > Steel, black oxide finish. Sealing Washer > Delrin. |
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