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.

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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