The RLS 4-2Z Bearing, with dimensions of 12.7×33.338×9 mm, is a high-precision component from SKF, designed for optimal performance in mechanical applications. This miniature deep groove ball bearing is engineered for various industrial uses, where compact size and efficient operation are critical. The SKF RLS42Z-SKF bearing is ideal for applications requiring reliable rotational motion with minimal friction, ensuring smooth and consistent performance.
Technical specifications
| Specification | Value |
| Bore diameter (d) | 12.7 mm |
| Outer diameter (D) | 33.338 mm |
| Width (B) | 9 mm |
| Basic dynamic load rating (C) | 7.28 kN |
| Basic static load rating (C0) | 3.45 kN |
| Limiting speed | 10,000 rpm |
| Shielding/Sealing | ZZ |
| Ring material | Chrome steel 100Cr6 |
| Precision class | P0 / ABEC-1 |
| Internal clearance | CN |
Technical advantages
The SKF RLS 4-2Z bearing offers a range of technical benefits, making it an excellent choice for various industrial applications:
- Capable of continuous operation up to 10,000 rpm, ideal for high-speed applications.
- Constructed with heat-treated 100Cr6 chrome steel, ensuring a rolling-contact fatigue life over 107 cycles.
- Standard CN radial clearance, perfect for assemblies that do not require preload.
- ZZ shielding provides effective protection against dust and moderate moisture ingress.
- Lightweight design facilitates integration into compact machinery.
Typical applications
The SKF RLS 4-2Z bearing is utilized across various sectors and machine types, including:
- Measurement and laboratory instruments, such as optical encoders and electronic micrometers.
- Aeromodelling and drones, particularly in brushless motors and planetary gearboxes.
- Dental equipment like turbines, contra-angles, and micromotors.
- Precision robotics, including harmonic drive reducers and cardan joints.
- Medical devices, such as peristaltic pumps and lung ventilators.
Availability and ordering
Eurobearing.eu is your specialized B2B supplier for the SKF RLS42Z-SKF bearing, offering fast availability for immediate needs. For bulk quantities, request a quote to benefit from our competitive pricing. Add this essential component to your cart or contact us for more information on fulfilling your specific requirements.

