Single-acting self-locking hydraulic cylinder 70-550T are double-acting hydraulic cylinders with a mechanical locking system of the rod in the end stroke position (extended rod), which permits to contrast very high opposite thrusts. Such a solution is widely applicable in the field of plastic injection and die-casting molds, in order to stand the injection pressure on large molding surfaces. The rod is hydraulically unlocked automatically when the piston comes back. WARNING: - For a correct functioning the cylinder it’s necessary to complete all the times the total available cylinder stroke, both forward and backward, in order to assuring the locking on one side and to avoid hammer-effects on piston-rod screw on the other side. For a firm locking it is necessary to keep the oil in pressure, when pushing, at a minimum of 120 bar-1740 PSI.- Pay great attention to the traction force, which is considerably lower than the thrust.

 

Lifting capacity：70-550T
Lifting Height：45-50mm
Max Working Pressure：70MPa
 
Ultra thin flat design for use where other cylinders will not fi 

Lock-nut feature for positive and safe load holding over a long period of time.

Single-acting, load return.
Plating of special compound material provide superior corrosion resistance and inferior friction. Nimble movement.
Overflow port functions as a stroke limiter 

Mold	Lifring Capacity (T)	Lifting Height (mm)	Min hight (mm)	Out Dia. (mm)	Hydraulic oil volumn (cm3)	Plunger Rod Dia.(mm)	Weight (kg)
SSL70-50	70	50	125	140	432	104	14
SSL100-50	100	50	137	175	734	136	25
SSL150-45	150	45	148	220	1040	171	42
SSL200-45	200	45	155	245	1285	190	55
SSL250-45	250	45	159	275	1650	216	72
SSL400-45	400	45	178	350	2517	266	131
SSL550-45	550	45	192	400	3287	305	186