Hollow Ram Cylinder Jacks

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 twelve 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 and HR300 models have two lifting handles and eyes fitted.

Hollow Ram Cylinder (Single-Acting)

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

Hollow Ram Cylinder (Double-Acting)

MODEL NUMBER Capacity
(tons)
Max. Stoke (mm)
HR30-110DA 30 110
HR60-150DA 60 150
HR75-300DA 75 300
HR100-150DA 100 150
HR150-150DA 150 150
HR300-50DA 300 50

The hydraulic cylinders 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.

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

Key Features:

  • 15 different models
  • Safe working load from 10 tonnes to 300 tonnes (3000 kNs) capacity
  • Expensive range of accessories
  • We offer single-acting, spring-return and double-acting cylinders
  • Suits all diameter of Macalloy, Dywidag, pins and all types of anchor stressing bars
  • Large stocks available for immediate dispatch

Applications:

  • Idea for pre-stressing anchorage and stress bar
  • Pre-stressing, pre-loading and Post-Tensioning Operations
  • Suits all stressing bars from Macolloy, Dywidag and all other manufacturer products
  • Pull and Anchor testing to Pile Load-Testing
  • Sliding, Lifting and Lowering Applications

For all Hydraulic Accessories, please see here and here
We stock the largest extensive sales / hire fleet range with over 1,500 hydraulic jacks and accessories which are fully load-proof tested and traceable to UKAS.


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Hydra-Capsule Limited
Hydra House - Bishops Frome
Worcestershire
WR6 5BP

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