Graepel’s rotating cooler baskets are high-precision roll-formed assemblies made of finely perforated sheet steel for use in harvesters.
The fine perforation reliably prevents the ingress of dirt particles, plant debris, and other foreign objects, while the large open area ensures an efficient supply of cooling air. In this way, the cooler baskets play a crucial role in ensuring that harvesters achieve their full performance even under dusty operating conditions.
Benefits & Features
- Fine perforations for reliable protection against dirt
- Large open area for optimal airflow
- High concentricity achieved through a special roll forming process
- Reduction in the number of components through production as a stamped part
- Delivered ready for installation in custom carriers
Special manufacturing process
Graepel manufactures rotating radiator cages using a specially developed roll forming process. Unlike welded assemblies, this results in a radiator cage with precise rotational alignment, high stability, and defined concentricity. The transition from multi-part welded constructions to roll-formed stamped parts reduces component variety, assembly effort, and manufacturing tolerances.
Another advantage of the process is the low tooling cost. Since roll forming uses relatively simple tools, development and adaptation costs can be significantly reduced. At the same time, the process allows for high flexibility in component design: different component heights can be achieved with the same radius without incurring additional tooling costs. This enables variants to be manufactured cost-effectively and product adaptations to be implemented quickly.
FAQ
The roll forming process enables high concentricity and reduces component tolerances compared to multi-part spot-welded assemblies.
It prevents dirt from entering and protects the components while ensuring an adequate supply of cooling air.
The achievable diameters depend on the hole pattern, material thickness, and geometric requirements. The maximum dimensions range from 450 mm to 1600 mm in diameter. Steel can be formed up to a thickness of 4 mm.
