Pneumatic And Hydraulic Equipment Page 1086

L SERIES - BASIC ACTUATOR The actuator is operated through the action of a hardened cam which is similar to a cushion piston. When the cylinder is cushioned, the cam also performs the function of the cushion piston. The cam contacts the actuator plunger approximately 3/16 inch from the end of stroke and moves the plunger and stem assembly about 1/16 inch. The action compresses the spring which returns the plunger and stem assembly when the stroke is reversed and cam disengagement takes place. A lighter force spring is employed for air cylinders and a heavier one for hydraulic. The L Series actuator is available for applications which require the mounting of a limit switch or signal device other than those described below. The customer-supplied device can be mounted by utilizing the 5/8-l8 UNF-2 threaded extension. A locking nut is provided. 250F continuous temperature rating. LB AND LD SERIES - ACTUATOR WITH SWITCH AND JUNCTION BOX The actuator is supplied with a limit switch enclosed by a junction box. The box is gasket sealed, making it dust proof and water tight. The cover is easily removed and removal provides easy access to the switch for removal or adjustment. Two 1/2 inch threaded ports, one on each side, provide for conduit connection. The box is retained by a lock nut and can be rotated up to 360 after installation. The LB Series has a SPDT limit switch with an electrical rating of 15 amps at 125, 250 or 480 volts A.C. It can be wired either normally open or normally closed. The LD Series is similar to the LB series except the limit switch is DPDT 180F continuous temperature rating. LS SERIES - ACTUATOR WITH SEALED SWITCH The actuator is supplied with an adapter and a DPDT sealed switch. The switch is sealed to dust and moisture. It has six 72 inch long leads of No. 20 wire and has an electrical rating of 5 amps, 125 volts with a 180F continuous temperature rating. Each wire is marked with circuit identification and wire gauge number. The DPDT switch is housed in a one inch diameter enclosure and can be removed without disturbing the built-in actuator. Adjustment is easily accomplished by rotating the switch housing. LX SERIES The actuator is supplied with an installed mounting adapter and an explosion proof SPDT enclosed switch. The enclosed switch is UL approved for hazardous locations Class 1, Groups C and D and also Class 11, Groups E and G. The switch is rated at 15 amps, 125, 250 or 480 volts AC: 1/8 HP-125 volts AC, 1/4 HP-250 volts AC. The switch is also rated at 1/2 amp at 125 volts DC and 1/4 amp at 250 volts DC. AVAILABLE ON SHEFFER SQUARE HEAD CYLINDERS - 150 PSI AIR TO 3000 PSI HYDRAULIC OFFERED FOR EITHER OR BOTH ENDS OF CYLINDER SEVERAL SWITCH SERIES AVAILABLE, OR ACTUATOR ONLY, TO OPERATE YOUR OWN SIGNAL DEVICE. ACCESSORIES-MECHANICAL LIMIT SWITCH ACTUATORS Sheffer cylinders (314) 427-0600 800-444-0522 (FAX) 314-427-3502 www. j JHF Catalog [ Volume 7 ] 1086 Prices Subject to Change Without Notice John Henry Foster pneumatic and hydraulic equipment

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