Double-Row Angular Contact Ball Bearings：156704

SIZE:20*50*20.3mm

Weight:0.197KG

Steel balls: 24 balls, diameter 7.144 mm
Material: GCr15 (ШХ-15) high carbon chromium bearing steel
Hardness: 60-64 HRC
Precision grade: P0 (general grade) / P6 / P5
Sealing type: Open type, double-sided iron seal (ZZ), double-sided rubber seal (2RS)
Rated load:
Dynamic load (C): 27.8 kN
Static load (Co): 29.5 kN
Limiting speed:
Grease lubrication: 12,000 r/min
Oil lubrication: 16,000 r/min
II. Main Applications

Automotive Transmissions: Dedicated bearings for intermediate shafts (countershafts) in transmissions of models such as Lada (LADA/VAZ) 2101-2107 and Niva (2121).

Construction Machinery: Small reducers, gearboxes, transmission mechanisms.

Agricultural Machinery: Tractor and harvester transmission systems.

General Machinery: High-speed shaft systems in motors, pumps, compressors, etc., requiring the bearing of complex loads.

III. Advantages and Characteristics

Double-row structure, high load-bearing capacity. 

The double-row ball bearing design allows for simultaneous bearing of large radial and bidirectional axial loads, resulting in higher rigidity and longer lifespan compared to single-row bearings.

High-speed adaptability. 

Deep groove raceways and precision steel balls reduce friction and achieve high limiting speeds, making them suitable for frequent gearbox shifting.

Self-aligning performance. 

The angular contact structure allows for slight angular deviations, compensating for installation errors or minor shaft deformation.

Compact and durable. 

20.6mm width for high space utilization; bearing steel material, wear-resistant and impact-resistant, suitable for harsh environments such as automotive applications. 

Easy Maintenance
Sealed Type (2RS/ZZ) Pre-filled with grease, dustproof and contaminant-proof, extending oil change intervals and reducing maintenance costs