Formed Rollers (HM140/150)
GURTEC’s Heavy Mining Idler Roller is setting a new standard for high speed mass transportation and life cycle costs.
Our highly automated manufacturing line utilises a flow forming process for extremely round tubes and an end forming process to round shell edges and integrate concentric bearing houses to the roller shell body, avoiding the need for welding.
- Innovative design and specialised end forming and flow forming manufacturing process delivers a shell of exceptional roundness and hardness for improved service life.
- Developed specifically for mining and other demanding applications with high loads and belt speeds – operating up to 11 m/s and 52,000 tonnes per hour
- Formed rollers do not require machining and balancing
- Available as carry, impact and return rollers as well as garlands
1 | Flow-formed roller tube
Excellent balancing quality (<G16 according to ISO 1940) and concentricity <0.3. Due to the tube forming process, there is no need for dynamic balancing and machining. This allows high belt speeds and increased capacity while decreasing noise emission. The solidifi ed surface of the roller shell leads to reduced wearing of the tube.
2 | Multi-channel labyrinth seal from own production
effectively keeps dirt, dust and moisture away from the bearing – increases bearing life.
3 | Integrated bearing seats by end-forming
The tube ends are formed into bearing housings. This means that no separate bearing housings and welding are needed. Belt friendly – no sharp edges.
4 | Cold-forged high-precision hollow shaft
instead of a solid steel shaft, which reduces weight and cost while also giving less deflection.