Hydraulic Bolt Tensioning Cylinder Type ES, Single-Stage Hydraulic
Bolt Stretcher
For
Bolt tensioning cylinders with one piston surface and automatic
piston return for high bolting cycles. For applications with
axially limited and radially free space.
Type ES (single-stage)
Short & wide design for radially open but limited vertical
clearance applications
Standard scope
design for bolt quality 10.9: M16 to M150
design for bolt quality 8.8: M16 to M110
Custom made
design for bolt quality 12.9: M20 to M560
design for bolt quality 14.9: M20 to M560
Special tensioning cylinders, custom designs of bolt quality 4.8,
8.8 or 12.9 or other bolt qualities are available upon request.
Hexagon nuts
ISO 4032: Hexagon nuts (former DIN 934)
DIN 2510-5: Hexagon nuts
EN 14399-4: High strength pre tension able bolt connections for the
steel constructions (former DIN 6915)
Heavy hex nuts
Hexagon nuts according to customer designs
Round nuts:
Round nuts with radial hole
Round nut with center holes
Round nuts RMS /RMZ
Round nut
Round nuts according to customer designs
Product description of the Bolt Tensioning Cylinder type ES
Use a hand torque wrench or battery nut wrench to tighten the bolt
tensioning cylinder onto the bolt.
The calculated pressure is generated by the ALS high pressure pump.
This produces torsion-free and friction-free elongation of the
bolt. The hydraulic pressure at the pump is proportional to the
preload of the bolt tensioning cylinder applied to the bolt.
When pressure is reached, tighten the nut with a hand torque wrench
to control torque output.
| Type | Preload force(KN) | Nominal diameter | Stroke(mm) |
| SE16-8.8 | 125 | 5/8’’ |
10-15mm |
| SE20-8.8 | 150 | 3/4’’ |
| SE22-8.8 | 150 | 7/8’’ |
| SE24-8.8 | 200 | 1’’ |
| SE27-8.8 | 260 | - |
| SE30-8.8 | 320 | 1 1/8’’ |
| SE33-8.8 | 400 | 1 1/4’’ |
| SE36-8.8 | 470 | 1 3/8’’ |
| SE39-8.8 | 560 | 1 1/2’’ |
| SE42-8.8 | 640 | 1 5/8’’ |
| SE45-8.8 | 750 | 1 3/4’’ |
| SE48-8.8 | 854 | 1 7/8’’ |
| SE52-8.8 | 1016 | 2’’ |
| SE56-8.8 | 1175 | 2 1/4’’ |
| SE60-8.8 | 1400 | 2 3/8’’ |
| SE64-8.8 | 1550 | 2 1/2’’ |
| SE68-8.8 | 1678 | - |
| SE72-8.8 | 1800 | 2 3/4’’ |
| SE80-8.8 | 2350 | - |
| SE90-8.8 | 2450 | 3 1/2’’ |
| SE100-8.8 | 2750 | 4’’ |
| SE110-8.8 | 2500 | 4 1/4’’ |
Our Chinese modifications and changes are reserved. Feel free to
contact us for an individual design or further information.
Available in standard or custom models, to suit any application.
Works with hand, air or electrical pump types.
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