- Very good chemical and thermal resistance
- Good wear resistance
- Operation temperature: from -100°C up to +150°C
- Ring material: xirodur® A500
- Cage material: PEEK (polyetheretherketone)
- Ball material: ceramic (zirconium oxide)
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xirodur® A500 | The specialist for high chemical and thermal resistance
The xirodur® A500 material is the specialist for high chemical and temperature resistance. In combination with the PEEK cage, this material covers applications with continuous service temperatures from -100°C to +150°C and is particularly resistant to strong acids. Zirconium oxide ceramic balls contribute to high chemical and thermal resistance and ensure good wear resistance. This avoids bearing damage and consequential costs.
Typical application areas:
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Tolerances and measurement system:
the tolerances for the inner and outer diameter depend on the installation size. These are often approx. ±0.05mm to the nominal size. The bearing rings are usually injection moulded and naturally have a certain ovality. Therefore, the caliper is used to measure 90° to the injection point (if available) over the entire width of the bearing. The dimensions and tolerances are designed in such a way that they fulfil a slight press-fit by hand when using a H7 holder and h6 shaft. An additional locating spigot using a circlip (shaft) and snap ring (housing) is recommended to prevent axial displacement.

Installation recommendation:

1. Housing (tolerance H7)
2. Front (balls visible)
3. Rear (cage visible)
4. Press-fit the ball bearing, front side first
5. Install shaft (tolerance h6) with chamfer
6. A locating spigot must be provided