Main Page > Products > Crosby > > HFG - SINGLE ACTING FAILSAFE LOCK RING CYLINDERS

The HFG single acting failsafe lock ring cylinder range combines all the versatility and efficiency of hydraulic power with the safety of mechanical load support. Ideally suited for applications requiring sustained load holding for extended periods, such as bridge support work, the HFG range features a single acting, load return piston, threaded throughout it's stroke length to suit the integral threaded mechanical load holding lock ring. Simply jack up the load, wind down the mechanical lock ring until it comes into contact with the cylinder body, release the hydraulic pressure and sustain the load mechanically. All models are suitable for vertical lifting only and are supplied with tilting saddles as standard to reduce the risk of side loading the cylinder. Standard models are featured in this catalogue, however other stroke and tonnage options are available on request.

>> Single acting load return design
>> Surface treated cylinder bore
>> Low friction bearing surfaces
>> Surface treated piston rod
>> Anti-extrusion seals
>> Tilting saddle fitted as standard
>> Overstroke restrictor port

Model number	Capacity tonnes	Stroke mm	Oil cap. litres	Cy. eff. area cm2	Weight kg
HFG502	50	50	0.36	71.3	15.4
HFG504	50	102	0.73	71.3	20.6
HFG506	50	150	1.07	71.3	25.0
HFG1002	109	50	0.77	153.4	33.5
HFG1004	109	100	1.53	153.4	47.5
HFG1006	109	150	2.30	153.4	61.5
HFG1502	152	50	1.07	214.3	69.5
HFG1504	152	100	2.14	214.3	84.0
HFG1506	152	150	3.21	214.3	89.5
HFG2006	203	152	4.33	285.1	137.0
HFG3006	326	150	6.87	457.7	228.5
HFG4006	398	151	8.44	559.0	308.5
HFG5006	520	152	11.10	729.9	457.0

Dimensions in mm
A	B	C	D	E
172	127	95	70	25.0
224	127	95	70	25.0
272	127	95	70	25.0
184	178	140	115	27.5
240	178	140	115	27.5
311	178	140	115	27.5
238	216	165	135	42.0
288	216	165	135	42.0
338	216	165	135	42.0
362	254	190	135	50.0
417	310	241	150	50.0
459	342	267	180	70.0
498	400	305	180	80.0