B31Z-19 Double Metal Shield ZZ Non-Standard Deep Groove Ball Bearing, Auto Gearbox Special Bearing

B31Z-19 non-standard deep groove ball bearing customized for automobile and agricultural machinery gearboxes. Double-sided Z stamped metal dust shields block fine dust and debris inside semi-sealed gearbox housings, allow free circulation of gear lubricating oil for good heat dissipation. Standard C0 internal clearance, deep groove raceway bears radial load and small bidirectional axial load, stable low-noise high-speed operation under frequent shifting vibration. Fully quenched GCr15 bearing steel with tight dimensional tolerance, fully interchangeable with original matching bearing models. Complete formal quotation will be provided within 24 hours upon inquiry.

• Double Z all-metal shield design, high temperature resistant, compatible with gearbox circulating oil lubrication, no rubber seal aging failure risk.
• Deep groove raceway structure bears combined radial and light axial force, low friction, smooth rotation under continuous shifting impact.
• Uniform high-hardness GCr15 chrome bearing steel, excellent wear and fatigue resistance, extend transmission assembly service life.
• Custom non-standard overall dimension perfectly fits original gearbox housing, direct replacement without modifying shafts or box components.
• Lightweight stamped steel cage reduces rotation inertia, stable running under medium-high speed continuous transmission working conditions.
• Optional P0/P6 precision grades, fully meet OEM vehicle transmission matching standards.

Automotive manual & automatic gearbox auxiliary shafts, farm tractor transmission assemblies, light commercial vehicle reducers, medium-speed agricultural machinery transmission parts, general industrial gear reduction devices.

Dimension drawings and technical spec sheets can be supplied on request.

25+ years professional manufacturer of non-standard gearbox bearings for vehicles and tractors. All finished bearings pass dust aging cycle test, high-speed rotation test and heavy load durability test before delivery. Support customized anti-rust surface coating and special high-temperature gearbox lubricant filling service. One-on-one professional installation technical guidance and formal quotation within 24 hours for all purchase inquiries. Stable mass production capacity meets long-term bulk orders from machinery factories and global distributors. Factory direct selling price, stable consistent quality and punctual batch delivery.

• Raw GCr15 steel hardness and chemical composition incoming inspection
• High-precision raceway grinding roughness detection
• Z metal shield dust circulation aging durability test
• Continuous vibration high-speed rotation fatigue life test
• Full dimension tolerance sorting inspection
• 100% visual appearance check before packaging
• Random sampling performance test before shipment

All B31Z-19 bearings pass multi-process strict quality inspection before delivery.

Send bulk inquiry for B31Z-19 double Z shielded transmission bearings to obtain below materials and services:

1. Complete formal detailed quotation within 24 hours
2. Standard dimension drawings and press-fit installation operation guidance
3. Custom anti-rust surface treatment and special lubricant filling service
4. Exclusive long-term bulk wholesale factory price without intermediate markup

Large-volume OEM cooperation is welcome anytime.