Top Flange Work Supports

Top-Flange Work 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. Available in three sizes, each in the three versions shown below:

Design Considerations 

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.

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.

Air Advanced 

Plunger is normally retracted for clear workpiece loading and unloading. Applying air pressure gently advances the plunger to the workpiece, where it contacts with light force. A Fine Air-Pressure Regulator, Air Extractor Dryer, and Air Clamping Valve are required for air control (see Related Products below). Fine-tune contact force using the air regulator. When fluid pressure is applied, the precision sleeve grips the plunger, locking it securely. The plunger retracts again when fluid pressure and air pressure are released. These Work Supports can also be used as “Air Extended” supports by leaving air pressure constantly on. 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.