HDN 3.0 X 12 Enidine Heavy Duty Hydraulic Shock Absorber, 3.0 in Bore, 12 in Stroke

The Enidine HDN 3.0 X 12 is a heavy duty hydraulic shock absorber with a 3.0 in bore and 12 in (300 mm) stroke.

Enidine Heavy Duty Series large-bore hydraulic shock absorbers protect equipment from large impacts in applications such as automated storage and retrieval systems and overhead bridge and trolley cranes. An internal charged air/oil accumulator replaces mechanical return springs, giving a shorter overall length and reduced weight; the optional bladder accumulator (BA) allows higher cycle rates.

Specifications:

Manufacturer:	Enidine
Model:	HDN 3.0 X 12
Series:	HDN
Type:	Non-adjustable hydraulic shock absorber
Bore:	3.0 in
Stroke:	12 in (300 mm)
Max. energy per cycle:	449,100 in-lbs/cycle (50 700 Nm/cycle)
Max. energy per hour:	11,639,200 in-lbs/hour (1 315 000 Nm/hour)
Max. shock force:	50,000 lbs (222 400 N)
Nominal return force with bladder accumulator:	175 lbs (780 N)
Nominal return force without bladder accumulator:	650 lbs (2 895 N)

• HDN shock absorbers will function satisfactorily at 5% of their maximum rated energy per cycle. Maximum cycle rate is 60 cycles/hr with the bladder accumulator (BA) option and 30 cycles/hr without.

Source: Enidine 2026 price list; ratings from the Enidine shock absorber catalogue (p.74).