Single Acting Low Height Fail Safe Lock Ring Cylinders, from 50 to 520 tonnes, Stroke Lengths 45 to 51mm

This low height single acting failsafe lock ring cylinder range combines all the versatility and efficiency of hydraulic power with the safety of mechanical load support, offering a sustainable lifting force in very confined work areas. Ideally suited for applications requiring load holding for extended periods, such as bridge support work.

The range features a single acting load return piston, threaded throughout its stroke length to suit the threaded mechanical load holding lock ring.

All models are suitable for vertical lifting only and are supplied with tilting saddles as standard.

For easy rotation of the load holding locking ring, we recommend the purchase of tommy bar(s).

• Capacities from 50 to 520 tonnes.
• Stroke lengths from 45 to 51mm.
• Working pressure 700 Bar.
• Load / Grivity return action.
• Stroke limiting device: Restriction Port.
• Single acting load return design.
• Nitrocarburised cylinder and piston rod.
• Low friction bearing surfaces.
• Anti-extrusion seals.
• Tilting saddle fitted as standard.
• Click for Hydraulic Pumps, 700 Bar.

Dimensions and Specifications

Capacity (t)	Stroke (mm)	Oil cap. litres	Cyl. eff. area cm²	A (mm)	B (mm)	C (mm)	D (mm)	E (mm)	Weight (kg)
50	51	0.36	71.3	125	127	95	70	19	14.2
109	50	0.77	153.4	137	178	140	115	20	27.9
152	45	1.07	214.3	150	216	165	135	28	44.0
260	45	1.65	366.1	159	273	216	200	31	69.4
520	45	3.29	729.9	192	400	305	290	43	186