ITH is able to design different shapes of bolt-tensioning cylinders depending on the space restrictions of the customers application. Over 80% of bolt-tensioning cylinders are specially designed for customer-specific circumstances. Please contact us we would be happy to assist you with your design.
We always distinguish between:
- multi-stage bolt-tensioning cylinders for radially confined spaces
- single-stage bolt-tensioning cylinders for axially confined spaces
- special types
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Multi-stage bolt-tensioning cylinders Type MS
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Single-stage bolt-tensioning cylinders Type ES
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Features:
- Patented anti-fracture device
- Patented gear drive system
- Use of different thread sizes through replacement of bushing and rotating sleeve
- Axially and radially rotating carrier
- Patented cycle counter (optional)
- Automatic piston return
- Spring-loaded rotating sleeve (optional)
- Direct gear drive for torque-controlled thread-down of hexagon nuts
- Radially rotating hydraulic connection (optional)
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Optional extras for MS and ES
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Cycle counter Records every pressure cycle of the bolt-tensioning cylinder, enabling exact compliance with maintenance period. |
Spring-loaded rotating sleeve Accelerates installation of bolt-tensioning cylinder since rotating sleeve springs upwards. |
Gear drive Torque-controlled thread-down of hexagon nuts with manual torque wrench. |
Simple single-stage bolt-tensioning cylinder
Type SES
Features:
- Patented anti-fracture device
- Nut screw-down with pin
- Patented cycle counter (optional)
- Axially and radially rotating hydraulic connection (optional)
- Use of different thread sizes through replacement of bushing and rotating sleeve
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Single-stage bolt-tensioning cylinder, thread in piston
Type ESG
Ausstattung:
- Patented anti-fracture device
- Nut screw-down with pin
- Patented cycle counter (optional)
- Axial hydraulic connection (optional)
- Automatic piston return
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Simple single-stage bolt-tensioning cylinder, thread in piston
Type SESG
Features:
- Patented anti-fracture device
- Nut screw-down with pin
- Axial hydraulic connection
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Special types
Type 
TWIN
Description:
- Parallel-operating multi-stage bolt-tensioning cylinder
- Permits simultaneous parallel pre-tensioning of two bolts
Features:
- Automatic piston return
- Patented anti-fracture device
- Patented cycle counter (optional)
- Lateral hydraulic connections, axial or radial
