Vi finns här för dig
Vi hjälper dig med tekniska frågor, servicebokning, offertförfrågningar och rätt val av verktyg
Our hollow cylinders are versatile and adaptable for industrial applications that require a through-hole. With precision engineering, they allow for the smooth passage of cables, wires or pipes through the cylinder. Manufactured with high-quality materials and designed for reliability and durability. Optimal for integration of materials or media. Experience the benefits of our hollow cylinders and their ability to effectively handle the need for a through-hole.
What is a hollow cylinder?
A hollow cylinder is a type of hydraulic cylinder with a through hole in the piston. This hole allows wires, rods, cables or other media to be threaded straight through the cylinder, providing a flexible and versatile solution in applications where both pressure (or pull) and a through space are required. At Torctech, we notice that hollow cylinders are often a key component in industrial applications where assembly, disassembly, lifting or tensioning torque require this through opening.
How does a hollow cylinder work?
Like other hydraulic cylinders, hollow cylinders are based on the principle that oil pressure from a hydraulic pump causes a piston to move in the cylinder tube. The difference is that the center of the piston is hollow and is adapted for applications where you need to pull or push around a through object. When you apply hydraulic pressure (up to, for example, 700 bar, which is a common standard in the industry) a force is created that pushes the piston outwards or inwards, depending on whether the cylinder is single-acting or double-acting.
-
Single-acting hollow cylinders : The piston actively moves in only one direction (usually out) and returns via
spring return or external force. -
Double-acting hollow cylinders : The piston can move actively both outwards and inwards by pressurizing two
different ports, providing increased control and speed in both directions.
Double-acting hollow cylinders – DH series from Larzep Hydraulic
Our DH series double-acting hollow cylinders are designed to meet most industrial pressing, pulling and lifting needs. With capacities from 30 – 150 tons and strokes from 38 – 250 mm, these cylinders offer both power and flexibility for tough applications.
Manufactured from steel or aluminium and with a maximum working pressure of 700 bar, these cylinders are built to perform under high demands. They are comparable to the Enerpac RRH series and Powerteam RH series, but offer a cost-effective and reliable alternative.
Benefits
- Capacity: 30–150 tons
- Stroke length: 38–250 mm
- Steel and aluminum versions
- Max working pressure: 700 bar
- Fully compatible with corresponding models from other leading brands
- Available with tilting fifth wheel for optimal load distribution
Areas of use
- Lifting and pulling applications in industry and workshops
- Assembly and disassembly work
- Construction, maintenance and repair
Model overview
| Model | Capacity | Stroke length | Weight | Material | Tilt saddle |
|---|---|---|---|---|---|
| D03032 | 30 tons | 320mm | 26.6 kg | Steel | Yes |
| D05032 | 50 tons | 320mm | 44.8 kg | Steel | Yes |
| D10016 | 100 tons | 160mm | 51.8 kg | Steel | Yes |
| D15030 | 150 tons | 300mm | 119 kg | Steel | Yes |
Please note: Several other models and configurations are available
available – contact us for technical advice or a quote.
Single-acting hollow cylinders – SH series from Larzep Hydraulic
The SH series from Larzep Hydraulic offers single-acting hollow cylinders that combine power, light weight and versatility – perfect for a range of industrial and workshop applications. With capacities from 12 – 100 tonnes and strokes between 40 – 153 mm , the series covers everything from small, low-profile models to heavily dimensioned variants for tough tasks.
The cylinders are available in both steel and aluminum versions and can withstand a maximum working pressure of 700 bar. They are well-equivalent to other well-known products on the market, such as the Enerpac RCH series and the Powerteam RH series, but offer a cost-effective and reliable alternative.
Benefits
- Capacity: 12–100 tons
- Stroke length: 40–153 mm
- Steel and aluminum versions
- Max working pressure: 700 bar
- Compact design – ideal for limited space
- High performance in both pulling and pushing
Areas of use
- Engineering industry
- Construction and maintenance
- Lifting and assembly work
- Applications where return is via spring or load
Model overview
| Model | Capacity | Stroke length | Weight | Material |
|---|---|---|---|---|
| SH01204 | 12 tons | 40mm | 3.4 kg | Steel |
| SH02215 | 22 tons | 150mm | 16.4 kg | Steel |
| SH06015 | 60 tons | 153mm | 38 kg | Steel |
| SH10008 | 100 tons | 80mm | 58 kg | Steel |
Contact us
With over 11 years of experience and more than 300 tools in our portfolio, we offer a fast and personal service. We believe in challenging the problems that companies face, and we like to think differently to create solutions for our customers where others fail. With us you get short delivery times and high availability, regardless of whether you are a small workshop or a large industrial company.
Contact us today for personal advice, a quote or to place an order. At Torctech, we are here to help you work safer, more efficiently and more profitably in all your hydraulic applications.