ROEMHELD Air-Powered Swing Clamps – All Threaded, J7.201

ROEMHELD Power Workholding

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Product Information

ROEMHELD Air-Powered Swing Clamps – All Threaded, J7.201 Part # CLR-0345-404 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 all-threaded version shown here is ideal for mounting through a fixture plate, to keep air lines out of the working area. An optional flange base is available for additional mounting possibilities.

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

J7.201

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

Three possible mounting methods: 1) Mount through a tapped hole in the fixture plate, securing with a Lock Ring; 2) Mount through a bored hole in the fixture plate, securing with two Lock Rings; 3) Mount in a Threaded Mounting Flange, securing with a Lock Ring, then fasten the Threaded Mounting Flange to the fixture with two socket-head cap screws (allows side mounting).

Mounting with Optional Flange Base

Several possible mounting methods: 1) fasten to top of fixture plate with four socket-head cap screws inserted through the flanged base from above; 2) Mount through a bored hole in the fixture plate, fastening with four socket-head cap screws inserted through the flanged base from below; 3) Mount through a tapped hole in the fixture plate, securing with a lock ring; 4) Mount through a bored hole in the fixture plate, securing 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. Proximity switches can be oriented at any angle. Order two CLR-3829-119-PM inductive proximity switches, and two CLR-3829-099-PM right-angle plugs with cable (PNP connection). Sensors are mounted with hose clamps.

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 – All Threaded, J7.201

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-1873-305	31	3 Series	90° cw	M30x1.5	7	14.5	M5
CLR-1873-405	31	3 Series	90° ccw	M30x1.5	7	14.5	M5
CLR-1874-303	82	4 Series	90° cw	M40x1.5	9	18.5	M5
CLR-1874-403	82	4 Series	90° ccw	M40x1.5	9	18.5	M5
CLR-1875-303	124	5 Series	90° cw	M50x1.5	15	32	1/8 BSPP
CLR-1875-403	124	5 Series	90° ccw	M50x1.5	15	32	1/8 BSPP
CLR-1876-303	195	6 Series	90° cw	M60x1.5	15	33	1/8 BSPP
CLR-1876-403	195	6 Series	90° ccw	M60x1.5	15	33	1/8 BSPP
CLR-1877-303	310	7 Series	90° cw	M80x1.5	18	41	1/4 BSPP
CLR-1877-403	310	7 Series	90° ccw	M80x1.5	18	41	1/4 BSPP