X-134398.H Non-Standard Auto Gearbox Precision Deep Groove Bearing

1. Product Overview

X-134398.H single-row non-standard thin-wall deep groove ball bearing. Suffix H stands for high-temperature reinforced structure with optimized heat resistance and dimensional stability under sustained high oil temperature. Fully interchangeable with NSK X-134398.H, specially matched for miniature hydraulic valve control shafts inside Asian passenger car automatic transmissions.
Three seal configurations available: Open type, ZZ metal shield, 2RS double rubber seal. Equipped with stamped low-carbon steel cage, C0 clearance as standard, C3 clearance customizable on demand. It withstands light radial load and minor bidirectional axial load, runs ultra-quiet and stable under long continuous high-speed rotation and high-temperature circulating gear oil environment inside transmission housing. Manufactured with fully quenched high-purity GCr15 chrome bearing steel and strict micron-level dimensional tolerance, supporting direct OEM plug-and-play replacement without modifying gearbox housing or micro shaft. Complete formal quotation can be provided within 24 hours upon inquiry.

2. Key Advantages

• Open through-hole design enables full circulation of gearbox oil for continuous efficient heat dissipation, eliminates hidden risks of rubber seal aging, swelling and oil leakage
• Superfinished ultra-smooth raceway cuts friction torque, less heat accumulation under long-term high-speed variable load operation
• H high-temperature reinforced structure maintains stable dimensional accuracy under persistent high gear oil temperature, effectively prevents deformation
• High-hardness integrated inner & outer rings deliver outstanding wear resistance and anti-fatigue performance, extend overall gearbox service life
• Unified OEM installation dimensions, no structural modification required during miniature control shaft replacement
• Ultra-light stamped steel cage minimizes rotation inertia, perfectly adapts to long-term steady high-speed working of transmission hydraulic components
• Standard P0 precision grade, P6 upgraded precision and C3 clearance customizable; stable mass production with sufficient spot stock, high cost performance for aftermarket repair and bulk OEM supporting orders

3. Applications

Asian passenger car automatic gearbox hydraulic control valve micro shafts, transmission auxiliary small rotating shafts, light commercial vehicle precision mini reducers, small agricultural machinery high-speed fine transmission moving parts.

4. Technical Specifications

Dimension drawings and full technical spec sheets available on request.

5. Why Choose GQZ Bearing

25+ years professional manufacturer of X-series non-standard auto transmission precision miniature bearings. All finished bearings pass high-speed rotation test, low-noise vibration test and long-cycle high-temperature durability aging test before delivery. Custom anti-rust coating and high-temperature anti-wear gear grease filling service supported. One-on-one professional gearbox installation guidance and fast formal quotation for all RFQs. Stable bulk supply capacity, factory direct selling price, consistent stable quality and punctual batch delivery.

6. Quality Assurance

• Raw GCr15 steel hardness & chemical composition incoming inspection
• Deep groove raceway superfinishing roughness detection
• Long-time high-temperature gear oil circulation aging durability test
• Low noise vibration fatigue rotation cycle test
• Full dimension tolerance sorting inspection
• 100% visual marking appearance check before packaging
• Random high-speed & high-temperature performance sampling test before shipment

All X-134398.H bearings pass multi-step strict factory inspection.

7. CTA

Inquire bulk X-134398.H high-temperature gearbox miniature bearings to get full support:

1. Complete formal detailed quotation within 24 hours
2. Standard dimension drawings & micro shaft press-fit installation guide
3. Custom anti-rust surface treatment & dedicated high-temperature gear lubricant filling service
4. Exclusive long-term factory wholesale price without intermediate markup

Large-volume OEM cooperation is warmly welcomed.

8. FAQ

1. Q1: What does suffix H represent for X-134398.H?
   A1: H = high-temperature optimized reinforced structure, better dimensional stability and anti-deformation performance under sustained high gear oil temperature compared to standard models.
2. Q2: Differences between open, ZZ and 2RS versions?
   A2: Open type installed inside gearbox for circulating gear oil lubrication; ZZ metal shield for semi-sealed internal assembly with light dust; 2RS double rubber seal for exposed external shafts, dustproof & waterproof, pre-filled long-life anti-wear grease.
3. Q3: Can X-134398.H replace original NSK bearing directly?
   A3: Yes, all mounting dimensions and internal structure are fully consistent, no modification to gearbox components needed during assembly.