Four-Point Contact Ball Bearing
Single-row bearings capable of supporting axial loads in both directions, ideal for rolling mill and heavy machinery applications.
Technical Overview
Four-Point Contact Ball Bearings are a specialized type of single-row angular contact ball bearing where the inner and outer rings have gothic arch raceways that create four contact points with each ball. This unique geometry allows a single bearing to support axial loads in both directions as well as radial loads, making it functionally equivalent to a back-to-back arrangement of two angular contact bearings but in a more compact envelope. ANDE four-point contact ball bearings are used in rolling mill applications, large gearboxes, crane slewing rings, and other heavy machinery where bidirectional axial load support is required in a space-efficient design.
Key Features
- Four-point contact geometry supports axial loads in both directions
- Compact single-row design replaces two angular contact bearings
- Gothic arch raceway profile for optimal load distribution
- Suitable for combined radial and bidirectional axial loads
- Available in large bore diameters for heavy machinery applications
Technical Specifications
| Property | Value |
|---|---|
| Type | Four-Point Contact Ball Bearing |
| Bore Diameter | 30 mm - 500 mm |
| Outer Diameter | 62 mm - 670 mm |
| Width | 16 mm - 80 mm |
| Material | Chrome Steel AISI 52100 |
| Cage Type | Machined brass / Pressed steel |
| Precision Class | P0 standard, P6/P5 on request |
| Speed Rating | Up to 3,000 RPM (size dependent) |
| Dynamic Load Rating | 20 kN - 800 kN |
| Static Load Rating | 30 kN - 1,500 kN |
| Seal Options | Open / Shielded configurations available |
| Standards | ISO 15:2017, ISO 492 |