ROEMHELD Air-Powered Swing Clamps – Top Flange, J7.203

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Product Information

ROEMHELD Air-Powered Swing Clamps – Top Flange, J7.203 Part # CLR-1874-103 Carr Lane Mfg.®

100 psi max (Air)

Double Acting

Air-operated version of our popular hydraulic Swing Clamps, for applications requiring light clamping force. Arm swings clear for easy loading, with a sturdy helical-cam mechanism. Arm can be mounted to start its 90° swing from any position within 360°. A standard magnetic piston allows monitoring of clamping and unclamping position. The top-flange version shown here allows low-profile built-in mounting, using either standard fittings or manifold mounting.

Available in five sizes, each with a choice of clockwise or counterclockwise swing. Clamping force at 100 psi with standard arm:

31 lbs (3 Series)

83 lbs (4 Series)

126 lbs (5 Series)

200 lbs (6 Series)

310 lbs (7 Series)

Application Information

Documents

J7.203

Data Sheet

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 air 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.

Design Considerations

See Application Information for a typical air-connection example. Use an Air Check Valve between the air supply and the Air Clamping Valve to protect against pressure loss if the air supply fails. Always use a Filter/Regulator/Lubricator. For extended clamp life, install an Air Extractor Dryer before the Filter/Regulator/Lubricator. Swing motion must not be restricted in any way. Be sure to adjust the contact bolt so that the clamp completes its full swing stroke and starts its clamping stroke before contacting the workpiece. Do not use with hydraulic fluid.

Mounting

Fasten to fixture plate with two socket-head cap screws. The threaded-body version (standard fittings) can alternatively be secured with one or two Lock Rings.

Clamping Arm

Order clamping arm separately. Standard clamping arm has a maximum allowable operating pressure of 100 psi. Longer clamping arms will reduce allowable operating pressure, inversely proportional to arm length.

Optional Position Sensing

All of these clamps have a magnetic piston as standard and are ready to accept position sensing. Standard side grooves provide convenient sensor mounting and adjustment. Order two CLR-3829-147-PM inductive proximity switches, and two CLR-3829-099-PM right-angle plugs with cable (PNP connection).

Material

Click here for detailed material and finish specifications.

California residents click here for Prop 65 information.

ITEM	MATERIAL	HEAT TREAT	FINISH
Piston Rod	Stainless steel	-	Black Oxide
Housing, guide bushing, piston, and flange	hardcoated aluminum	-	-
Clamping Arm	Steel	-	-

ROEMHELD Air-Powered Swing Clamps – Top Flange, J7.203

Version for Standard Fittings

Order Clamping Arm separately below.

PART NO.	MAXIMUM CLAMPING FORCE (lbs)	CLAMP SIZE	SWING	M BODY THREAD	CLAMPING STROKE (mm)	TOTAL STROKE (mm)	F & G PORTS
CLR-1873-103	31	3 Series	90° cw	M40x1.5	7	14.5	M5
CLR-1873-203	31	3 Series	90° ccw	M40x1.5	7	14.5	M5
CLR-1874-103	82	4 Series	90° cw	M52x1.5	9	18.5	M5
CLR-1874-203	82	4 Series	90° ccw	M52x1.5	9	18.5	M5
CLR-1875-103	124	5 Series	90° cw	M60x1.5	15	32	1/8 BSPP
CLR-1875-203	124	5 Series	90° ccw	M60x1.5	15	32	1/8 BSPP
CLR-1876-103	195	6 Series	90° cw	M70x1.5	15	33	1/8 BSPP
CLR-1876-203	195	6 Series	90° ccw	M70x1.5	15	33	1/8 BSPP
CLR-1877-103	310	7 Series	90° cw	M85x2	18	41	1/4 BSPP
CLR-1877-203	310	7 Series	90° ccw	M85x2	18	41	1/4 BSPP

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Version for Manifold Mounting

Order Clamping Arm separately below.

PART NO.	MAXIMUM CLAMPING FORCE (lbs)	CLAMP SIZE	SWING	J BODY DIA (mm)	CLAMPING STROKE (mm)	TOTAL STROKE (mm)	F & G PORTS
CLR-1873-105	31	3 Series	90° cw	40	7	14.5	M5
CLR-1873-205	31	3 Series	90° ccw	40	7	14.5	M5
CLR-1874-105	82	4 Series	90° cw	52	9	18.5	M5
CLR-1874-205	82	4 Series	90° ccw	52	9	18.5	M5
CLR-1875-105	124	5 Series	90° cw	60	15	32	1/8 BSPP
CLR-1875-205	124	5 Series	90° ccw	60	15	32	1/8 BSPP
CLR-1876-105	195	6 Series	90° cw	70	15	33	1/8 BSPP
CLR-1876-205	195	6 Series	90° ccw	70	15	33	1/8 BSPP
CLR-1877-105	310	7 Series	90° cw	85	18	41	1/4 BSPP
CLR-1877-205	310	7 Series	90° ccw	85	18	41	1/4 BSPP