B18Z-1B1 Open Steering Column High-Speed Precision Bearing

1. Product Overview

B18Z-1B1 non-standard single-row open deep groove ball bearing, dimension 18.7mm inner × 38mm outer × 10mm narrow width. Suffix Z stands for ultra-smooth superfinished raceway, suffix 1B1 represents matched precision structural design. Fully interchangeable with original NSK B18Z-1B1, specially used for Asian passenger car steering column assembly. Open design without rubber sealing lips, stamped low-carbon steel cage, standard C0 clearance, C3 clearance customizable. It bears light radial load and slight bidirectional axial load, runs ultra-quiet and stable under frequent low-speed steering swing and normal working temperature environment. Made of fully quenched GCr15 bearing steel with micron-level tight dimensional tolerance, direct OEM plug-and-play replacement. Complete formal quotation will be provided within 24 hours upon inquiry.

2. Key Advantages

• Open through-hole structure allows continuous grease circulation, stable heat dissipation, no rubber seal aging or grease leakage
• Z-type superfinished raceway greatly reduces friction torque, ultra-smooth steering operation without jitter
• High-hardness integrated thin-wall inner and outer rings provide excellent wear and anti-fatigue performance, extend steering system service life
• Unified OEM installation dimensions, no modification to steering column housing or spindle during assembly
• Ultra-light stamped steel cage minimizes rotation resistance, adapts to frequent reciprocating swing of steering shaft
• P0 standard precision, P6 accuracy and C3 clearance available for customization
• Stable mass production with sufficient stock, cost-effective for aftermarket repair and bulk OEM supporting orders

3. Applications

Asian passenger car steering column core assembly, small vehicle auxiliary steering shaft, light commercial vehicle miniature control rotating parts, small precision mechanical low-speed swing components.

4. Technical Specifications

5. Why Choose GQZ Bearing

25+ years professional manufacturer of B series non-standard auto bearings. All finished bearings pass high-speed rotation, reciprocating swing and fatigue durability test before delivery. Custom anti-rust coating and special low-friction steering grease filling service supported. Professional steering assembly installation guidance and fast quotation for all RFQs. Stable bulk supply, factory direct price, consistent quality and on-time batch delivery.

6. Quality Assurance

• Raw steel hardness and chemical composition incoming inspection
• Z-type raceway superfinishing roughness detection
• Reciprocating swing long-term aging durability test
• Vibration fatigue rotation cycle test
• Full dimension tolerance sorting inspection
• 100% visual appearance marking check before packaging
• Random high-speed sampling test before shipment
• All B18Z-1B1 bearings pass multi-step strict factory inspection.

7. CTA

Inquire bulk B18Z-1B1 steering column precision bearings to get full support:

1. Complete formal quotation within 24 hours
2. Standard dimension drawings & steering shaft press-fit installation guide
3. Custom anti-rust surface treatment & dedicated low-friction grease filling

Exclusive long-term factory wholesale price without middle markup

Welcome large-volume OEM cooperation.

8. FAQ

1. Q1: What do suffix Z and 1B1 mean?
   A1: Z = super ultra-smooth raceway for low friction smooth operation; 1B1 = exclusive optimized tolerance structure matched for steering column swing working condition.
2. Q2: Difference between open B18Z-1B1 and sealed bearings?
   A2: Open bearing installed inside steering column with pre-filled long-life grease; sealed bearings for external exposed shafts against dust and water.
3. Q3: Can B18Z-1B1 replace original NSK bearing directly?
   A3: Yes, all mounting dimensions fully consistent, no modification required during assembly.