ROEMHELD Standard Swing Clamps – Flange Base, B1.881 (3, 5, 6, 7 Series)

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Product Information

ROEMHELD Standard Swing Clamps – Flange Base, B1.881 (3, 5, 6, 7 Series)

3000 to 7250 psi max

Single and Double Acting

Swing Clamps utilize a sturdy helical-cam mechanism to swing the clamping arm clear for unrestricted loading. The Standard Swing Clamps shown here accept a wide variety of clamping arms, with maximum allowable operating pressure depending on the type of arm selected (3000 to 7250 psi max). These Swing Clamps incorporate our unique safety-clutch mechanism. If the clamping arm strikes an unexpected object during its swing, the clutch disengages to avoid damaging the object or the clamp's helical-cam mechanism. Clamping arm can be mounted to start its 90° swing from any position within 360°. The flange-base version shown here provides many plumbing options, including manifold mounting.

Available in four clamp sizes, single or double acting, standard fittings or manifold mounted, with a choice of clockwise, counterclockwise, or zero° swing. Available with 45° and 60° swing angles by special order. Double-acting clamps are also available with longer clamping strokes (25mm or 50mm) by special order. Clamping force at 7250 psi for single-acting clamps with a pivoting clamping arm:

1060 Lbs (3 series)

2700 Lbs (5 series)

4200 Lbs (6 series)

7300 Lbs (7 series)

Application Information

Flange-base swing clamps are used together with Work Supports on a pallet fixture. All components are manifold mounted, so the fixture is entirely free of tubing lines.

Documents

B1.881

Standard Swing Clamp Data Sheet

Sizes & Clamping Force

Clamping Force with Pivoting Arm

Clamping Action

Available with clockwise, counterclockwise, or zero° swing

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 swings arm 90° over the workpiece then clamps down. Single-acting version has a fast, totally dependable spring return that lifts arm then swings it back 90° for loading/unloading. Optional fluid return (double acting).

Design Considerations

These Swing Clamps incorporate our unique safety-clutch mechanism. If the clamping arm strikes an unexpected object during its swing, the clutch disengages to avoid damaging the object or the clamp's helical-cam mechanism. Do not exceed maximum fluid flow rate in table. For extended clamp life and proper operation of the safety clutch, a simple flow-control valve may be required if the fixture is powered by a high-flow-rate power source and only contains a few clamps. Clamping time should be at least one second.

Mounting & Fluid Supply

Version 1

Standard Fittings

Version 2

Manifold Mounting

These Swing Clamps are available in two versions, one for use with standard fittings and one for manifold mounting. Version 1, for standard fittings, has a 1/4" BSPP port (two for double-acting clamps). Version 2, for manifold mounting has O-ring ports underneath instead of standard ports. Do not use NPT fittings. For manifold mounting, the mounting surface must be ground flat to ensure proper O-ring sealing.

Both clamp versions can be fastened to the top of a fixture plate with four socket-head cap screws inserted through the flanged base from above. Version 2 clamps, with standard fittings, can alternatively be mounted:

a) Through a bored hole in the fixture plate, fastening with four socket-head cap screws inserted through the flanged base from below;

b) Through a tapped hole in the fixture plate, securing with a lock ring;

c) Through a bored hole in the fixture plate, securing with one or two lock rings.

Clamping Arm

Standard Clamping Arm

3000 psi max

Gooseneck Clamping Arm

5000 psi max

Pivoting Clamping Arm

7250 psi max

Order clamping arm separately. Maximum allowable operating pressure depends on the type of arm selected. Choose a Standard Clamping Arm for 3000 psi max, a Gooseneck Clamping Arm for 5000 psi max, or Pivoting Clamping Arm for 7250 psi max (requires a rear support). Longer, custom clamping arms will further reduce allowable operating pressure, inversely proportional to arm length.

Material

Piston > Alloy steel, nitrated for wear and corrosion resistance. Housing > Mild steel, nitrated for wear and corrosion resistance. Piston rod wiper > Viton.

Click here for detailed material and finish specifications.

ROEMHELD Standard Swing Clamps – Flange Base, B1.881 (3, 5, 6, 7 Series)

Version for Standard Fittings – Single Acting

Order Clamping Arm separately below.

PART NO.	CLAMP SIZE	SWING DIRECTION	MAXIMUM CLAMPING FORCE (lbs)	MAXIMUM CLAMPING FORCE (kN)	LENGTH (mm)	WIDTH (mm)	HEIGHT (mm)	CLAMPING STROKE (mm)	TOTAL STROKE (mm)
CLR-1883-104	3 Series	90° cw	1060	4.7	65	45	126.5	11	19
CLR-1883-204	3 Series	90° ccw	1060	4.7	65	45	126.5	11	19
CLR-1883-244	3 Series	zero°	1060	4.7	65	45	126.5	11	19
CLR-1885-104	5 Series	90° cw	2700	12	85	63	147.5	13	22
CLR-1885-204	5 Series	90° ccw	2700	12	85	63	147.5	13	22
CLR-1885-244	5 Series	zero°	2700	12	85	63	147.5	13	22
CLR-1886-104	6 Series	90° cw	4200	18.5	100	80	172	15	26
CLR-1886-204	6 Series	90° ccw	4200	18.5	100	80	172	15	26
CLR-1886-244	6 Series	zero°	4200	18.5	100	80	172	15	26
CLR-1887-104	7 Series	90° cw	7300	32.5	115	90	182	15	25
CLR-1887-204	7 Series	90° ccw	7300	32.5	115	90	183	15	25
CLR-1887-244	7 Series	zero°	7300	32.5	115	90	183	15	25

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Version for Standard Fittings – Double Acting

Order Clamping Arm separately below.

PART NO.	CLAMP SIZE	SWING DIRECTION	MAXIMUM CLAMPING FORCE (lbs)	MAXIMUM CLAMPING FORCE (kN)	LENGTH (mm)	WIDTH (mm)	HEIGHT (mm)	CLAMPING STROKE (mm)	TOTAL STROKE (mm)
CLR-1893-104	3 Series	90° cw	1100	4.9	65	45	126.5	11	19
CLR-1893-204	3 Series	90° ccw	1100	4.9	65	45	126.5	11	19
CLR-1893-244	3 Series	zero°	1100	4.9	65	45	126.5	11	19
CLR-1895-104	5 Series	90° cw	2800	12.5	85	63	147.5	13	22
CLR-1895-204	5 Series	90° ccw	2800	12.5	85	63	147.5	13	22
CLR-1895-244	5 Series	zero°	2800	12.5	85	63	147.5	13	22
CLR-1896-104	6 Series	90° cw	4500	20	100	80	172	15	26
CLR-1896-204	6 Series	90° ccw	4500	20	100	80	172	15	26
CLR-1896-244	6 Series	zero°	4500	20	100	80	172	15	26
CLR-1897-104	7 Series	90° cw	7800	34.5	115	90	182	15	25
CLR-1897-204	7 Series	90° ccw	7800	34.5	115	90	183	15	25
CLR-1897-244	7 Series	zero°	7800	34.5	115	90	183	15	25

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Version for Manifold Mounting – Single Acting

Order Clamping Arm separately below.

PART NO.	CLAMP SIZE	SWING DIRECTION	MAXIMUM CLAMPING FORCE (lbs)	MAXIMUM CLAMPING FORCE (kN)	LENGTH (mm)	WIDTH (mm)	HEIGHT (mm)	CLAMPING STROKE (mm)	TOTAL STROKE (mm)
CLR-1883-504	3 Series	90° cw	1060	4.7	65	45	126.5	11	19
CLR-1883-604	3 Series	90° ccw	1060	4.7	65	45	126.5	11	19
CLR-1883-644	3 Series	zero°	1060	4.7	65	45	126.5	11	19
CLR-1885-504	5 Series	90° cw	2700	12	85	63	147.5	13	22
CLR-1885-604	5 Series	90° ccw	2700	12	85	63	147.5	13	22
CLR-1885-644	5 Series	zero°	2700	12	85	63	147.5	13	22
CLR-1886-504	6 Series	90° cw	4200	18.5	100	80	172	15	26
CLR-1886-604	6 Series	90° ccw	4200	18.5	100	80	172	15	26
CLR-1886-644	6 Series	zero°	4200	18.5	100	80	172	15	26
CLR-1887-504	7 Series	90° cw	7300	32.5	115	90	182	15	25
CLR-1887-604	7 Series	90° ccw	7300	32.5	115	90	183	15	25
CLR-1887-644	7 Series	zero°	7300	32.5	115	90	183	15	25

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Version for Manifold Mounting – Double Acting

Order Clamping Arm separately below.

PART NO.	CLAMP SIZE	SWING DIRECTION	MAXIMUM CLAMPING FORCE (lbs)	MAXIMUM CLAMPING FORCE (kN)	LENGTH (mm)	WIDTH (mm)	HEIGHT (mm)	CLAMPING STROKE (mm)	TOTAL STROKE (mm)
CLR-1893-504	3 Series	90° cw	1100	4.9	65	45	126.5	11	19
CLR-1893-604	3 Series	90° ccw	1100	4.9	65	45	126.5	11	19
CLR-1893-644	3 Series	zero°	1100	4.9	65	45	126.5	11	19
CLR-1895-504	5 Series	90° cw	2800	12.5	85	63	147.5	13	22
CLR-1895-604	5 Series	90° ccw	2800	12.5	85	63	147.5	13	22
CLR-1895-644	5 Series	zero°	2800	12.5	85	63	147.5	13	22
CLR-1896-504	6 Series	90° cw	4500	20	100	80	172	15	26
CLR-1896-604	6 Series	90° ccw	4500	20	100	80	172	15	26
CLR-1896-644	6 Series	zero°	4500	20	100	80	172	15	26
CLR-1897-504	7 Series	90° cw	7800	34.5	115	90	182	15	25
CLR-1897-604	7 Series	90° ccw	7800	34.5	115	90	183	15	25
CLR-1897-644	7 Series	zero°	7800	34.5	115	90	183	15	25