ROEMHELD Swing Clamps for Low-Pressure Hydraulic Systems – Top Flange, B1.8500 (3, 4, 6, 7 Series)

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Product Information

ROEMHELD Swing Clamps for Low-Pressure Hydraulic Systems – Top Flange, B1.8500 (3, 4, 6, 7 Series)

1000 psi max

Double Acting

This unique series of Swing Clamps provides considerable clamping force at lower hydraulic pressures, allowing direct connection to the low-pressure hydraulic system of a machine tool. These are extremely compact, heavy-duty clamps with a reinforced swing mechanism and a heavier clamping arm to exert high clamping force in relation to clamp size. Swing Clamps utilize a sturdy helical-cam mechanism to swing the clamping arm clear for unrestricted loading. Arm can be mounted to start its 90° swing from any position within 360°. The top-flange version shown here allows low-profile mounting, using either standard fittings or manifold mounting.

Available in four clamp sizes, double acting only, with a choice of clockwise, counterclockwise, or zero° swing. Available with 45° and 60° swing angles by special order. Clamping force at 1000 psi with a Standard Clamping Arm:

450 lbs (3 series)

850 lbs (4 series)

1870 lbs (6 series)

2990 lbs (7 series)

Application Information

Documents

B18500_en_0723

Swing clamp with reinforced swing mechanism

Clamping Action

Swing Clamps are pull-type cylinders where part of the total stroke is used to swing the piston, and the remaining stroke is available as the clamping range. Applying fluid pressure to the A (clamping) port swings arm 90° over workpiece then clamps down. Switching pressure to the B (unclamping) port positively lifts arm then swings it back 90° for loading/unloading.

Reinforced Swing Mechanism

Reinforced swing mechanism ensures positive arm position. The safety-clutch mechanism normally incorporated into our swing clamps is omitted in this design. In case the workpiece hits the clamping arm during loading, the angular position of the swing-clamp arm will be exactly maintained. Using a longer, heavier clamping arm will also not declutch the swing arm and affect arm position.

Mounting & Fluid Supply

Standard Fittings

Manifold Mounting

Fasten clamp with four socket-head cap screws. Dual mounting capability provides every clamp with the option of using either standard fittings or manifold mounting. Two 1/4" BSPP ports. Do not use NPT fittings.

For optional manifold mounting, use the O-ring ports underneath, instead of the standard ports. For manifold mounting, the mounting surface must be ground flat to ensure proper O-ring sealing.

Clamping Arm

Standard Clamping Arm

1000 psi max

Order clamping arm separately below. Maximum allowable operating pressure is 1000 psi. Longer, custom clamping arms will reduce allowable operating pressure, inversely proportional to arm length. Optionally, the clamping arm can be positively keyed to the piston rod in a fixed 90° position by inserting an indexing pin (order separately).

Material

Piston > Alloy steel, nitrated for wear and corrosion resistance. Housing > Mild steel, nitrated for wear and corrosion resistance. Piston rod wiper > FKM. DFARS and RoHS compliant.

Click here for detailed material and finish specifications.