Bearings
Angular Contact Bearings
Angular Contact Bearings
Quick Code: BB-528130
5211 Nachi Double Row Angular Contact Ball Bearing 55mm x 100mm x 33.3mm
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Product Specification
Arrangement
Standard version
Brand
Nachi
Cage
Sheet steel cage
Clearance
Normal radial clearance
Contact angle
Without indication, usually 30-40 degrees
Inside Dia
55mm
Material
Standard bearing steel
Outer ring
Without flange/groove
Outside Dia
100mm
Row Type
Double
Seal
None, open bearing
Temperature range
-20 to +150 °C
Tolerance class
Tolerance class P0/PN2 / ABEC 1
Width
33.3mm
Reference
5211
Additional Reference:
10163762
Quick Order Code
BB-528130
Product Description
5211 Nachi Double Row Angular Contact Ball Bearing
The 5211 is a robust double row angular contact ball bearing from Nachi, engineered to deliver exceptional performance in high-speed precision applications demanding simultaneous radial and axial load capacity in both directions. This versatile bearing combines proven design with reliable construction, making it suitable for demanding industrial and automotive environments where durability and consistent performance are essential.
Bearing Specifications:
- Bore Diameter: 55mm
- Outer Diameter: 100mm
- Width: 33.3mm
- Bearing Type: Double Row Angular Contact
- Contact Angle: 30-40° (standard)
- Seal Type: Open Design
- Reference Number: 5211
- Manufacturer: Nachi
Key Characteristics:
- Double row configuration providing enhanced load-carrying capacity and superior rigidity
- Handles bidirectional radial and axial loads with exceptional stability
- Capable of accommodating tilting moments for improved bearing arrangements
- Sheet steel cage ensuring reliable ball retention and smooth operation
- Standard bearing steel construction for durability and extended service life
- Normal radial clearance for versatile mounting and application flexibility
- Open bearing design without flange or groove for simplified installation and maintenance
- Operating temperature range: -20°C to +150°C for performance in varied environments
- Tolerance class P0/PN2 (ABEC 1) for consistent precision performance
Typical Applications:
- Gearboxes and transmission systems
- Machine tool spindles and precision equipment
- Automotive applications and axle assemblies
- Electric motors and rotating machinery
- Heavy-duty industrial equipment
- Pump and compressor bearings
- Applications requiring bidirectional load support and enhanced stiffness
- High-speed machinery where reliability and precision are critical
The 5211 represents Nachi's commitment to quality engineering and delivers dependable performance for demanding double row angular contact bearing applications. Most items are in stock for immediate dispatch.

