for push-pull applications

GN 890 Pneumatically operated clamps

Type SP3 Body in forged steel

Size	FH [N] Holding force	Fs [N] Clamping force at 4 bar ≈	a	b1	b2	d1	d2	d3	d4	Female thread-Ø for hose	h
70	1200	500	14	42	64	8,5	M6	4,3	G1/8	4	52
360	5600	3100	27,5	55	90	12	M8	5,5	G1/8	4	70
1100	16000	4100	28	66	133	16	M10	8,5	G1/4	6	88
2100	25000	6000	38,5	80	177	20	M12	8,5	G1/4	8	100

Size	l1≈	l2≈	l3≈	m1	m2	m3	m4	s≈	t	w Stroke
70	171	78,5	20	26	13,5	26	-	8	12	12
360	260	113	32	33,5	30	36,5	-	8,5	16	21
1100	355	171	49	41	15	35	41	12	18	31
2100	461	222	61,5	50	35	50	50	13	22	45

Specification

Basic body

Steel

forged

chemically blackened

Parts in sheet metal

toughened steel C 10

German Material

No. 1.0301

zinc plated, blue passivated

Plunger in steel St.37

German Material

No. 1.0037

zinc plated, blue passivated

Bearing bushes

case hardened

Double acting cylinder

max. air pressure 6 bar

Information

The working principle of the pneumatically operated plunger clamp GN 890 is identical in construction and dimensions to the manual plunger clamp GN 842. To ensure an ex-tended life of the mechanical parts as well as air cylinder the operating pressure should not exceed 6 bar. In addition a lubro control unit should be fitted in the air line. The sturdy mounting frame for the cylinder has been designed to avoid the trunions of the cylinder to protrude over the frame.

Pneumatically operated plunger clamps GN 890 are also available as from size 360 as version M (magnetic piston). In conjunction with a proximity switch (GN 896.1 / GN 896.2) the position of the piston is sensed and the generated signal can be used in sequence control systems.

Further information on pneumatically operated clamps

Pneumatically operated clamps with cylinder for proximity switch GN 890 (for push-pull applications)