July 22,2026
MTWB QJ205 bearing is engineered for electric vehicle steering systems where high rigidity, low friction and precise rotational control are required. The four-point contact ball bearing design provides excellent axial load capability in both direction, making it suitable for modern EV steering column, steering gear and electric power steering (EPS) application.
Designation：QJ205 Bearing
OEM： Geely，Fiat，Daimler（ZF）
Application： Worm Shaft
• High-purity bearing steel is selected.
• Special groove and dust-proof groove processing technology.
• The sealing ring structure is designed as a three-lip structure, with 100% air-tightness testing.
• The sealing performance and bearing capacity of the bearing is improved.
• Compared with ordinary four-point contact bearing, the axial force and radial force are increased by 30%.
| Parameter | Specification |
|---|---|
| Bearing Type | Four Point Contact Ball Bearing |
| Bearing Number | QJ205 |
| Application | EV Steering System |
| Bearing Structure | Split Inner Ring Four Point Contact Design |
| Bore Diameter (d) | 25 mm |
| Outer Diameter (D) | 52 mm |
| Width (B) | 15 mm |
| Weight | Approx. 0.16 kg |
| Contact Angle | 35° |
| Dynamic Load Rating (Cr) | 26 kN |
| Static Load Rating (C0r) | 18.8 kN |
| Limiting Speed (Grease) | Approx. 10,000 rpm |
| Precision Grade | P6 / P5 Available |
| Clearance | C0 / C3 Customized |
| Lubrication | Automotive Low Noise Grease |
| Seal Option | Open / Customized Seal Design |
For EV manufacturer and Tier 1 steering system supplier like Geely, Fiat and Daimler(ZF), MTWB provides customized QJ205 bearing solution based on automotive-grade requirement.
Capability includes:
✓ Customized bearing dimension
✓ Special grease development
✓ Low noise inspection
✓ Lifetime traceability
✓ Batch consistency control
✓ PPAP support
✓ OEM engineering collaboration
MTWB QJ205 bearing provides a cost-effective alternative solution for automotive steering application where customers require reliable performance comparable to international bearing brand while optimizing supply chain cost.
QJ205 bearing is mainly used in automotive steering system, especially EV steering column and electric power steering application requiring high rigidity and axial load capability.
Four-point contact ball bearing can support axial load in both directions while maintaining compact dimension and high stiffness.
Yes. MTWB can customize clearance, grease, tolerance grade and packaging according to OEM and Tier 1 supplier requirement.
MTWB QJ205 bearing can be developed as an equivalent solution based on OEM drawing and performance requirement.
Looking for a reliable EV bearing supplier for Steering System ? MTWB provides customized bearing solution for electric vehicle, including OEM replacement bearing, special grease bearing and high-speed drivetrain bearing.
Contact MTWB today to discuss your related EV Bearing for steering system requirement and receive a professional bearing solution.
MTWB (Mighty Way Industrial Limited) is a professional customized EV bearing manufacturer for steering system and OEM bearing supplier specializing in high precision miniature bearing and application-specific bearing solution.
With advanced manufacturing capabilities, comprehensive testing system, and engineering expertise, MTWB helps global customers develop reliable bearing solution for demanding application.
