Hollow Ram Jacks (Hydraulic) available for Hire

Hollow ram hydraulic jacks used with high tensile pulling bars for stressing and clamping operations, all jacks are manufactured from high quality steel. Hard chrome plated plungers combined with polyurethane ram wipers help prevent scratching or corrosion and extend the life of the jack.
 
We offer nine different models of hollow ram jacks ranging from 10 to 100 tons in capacity. All our hollow ram jacks are fitted with a quick release input couplings and special retraction springs for easy plunger return, the HR60 and HR100 models have two lifting handles fitted.
 

Hollow Ram Cylinders (Single-Acting) available for Hire

 



 



















 
MODEL NUMBER  Capacity
(tons)
Max. Stoke (mm) Closed Height (mm) - H External    Dia,      (mm) - D1  Plunger      Dia,     (mm) - D2    Plunger      Hole     (mm) - D3 Litres WEIGHT (Kgs) Data Sheet
 HR10-041  10  41  121  70  35  19  0.08  2.8
 HR10-076  10  76  184  70  35  19  0.15  3.9
 HR20-051  20  51  162  100  55  27  0.17  7.2
 HR20-154  20  154  306  100  55  27  0.49  13.4
 HR30-64  30  64  179  115  63  33  0.28  10.4
 HR30-155  30  155  331  115  63  33  0.65  19.5
 HR60-76  60  76  249  159  93  54  0.66  29.8
 HR60-152  60  152  325  159  93  54  1.32  36.8
 HR100-76  100  76  255  213  125  79  1.11  51.4
 

Fixing Details

MODEL NUMBER  HR10  HR20 HR30 HR60 HR100
Bolt Size (UNC) 5/16" x 18 3/8" x 16 3/8" x 16 1/2" x 13 5/8" x 11
Depth (mm) - E 9.0 9.4 14.0 14.0 19.0
P.C.D (mm) -E 50.8 82.5 92.0 130.0 178.0
Thread (mm) - F 2"-3/4" x 16 3"-7/8" x 12 4"-1/2" x 12 6"-1/4" x 12 5/8"-3/8" x 12
Length (mm) - F 30.0 38.0 42.2 48.5 60.5


The cylinder body has two mounting holes which enables fixing to machinery such as, fixtures, clamping jigs, spreader plates, etc., the plungers load contact area is also grooved to increase its horizontal grip.
 
The jack should only be operated between parallel surfaces, if this is not the case then use a steel tapered shim which must cover the full plunger area or install and level a steel plate bedded on a high strength mortar or grout.

 
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