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Super Precision Angular Contact Ball Bearings 71813 CD/P4DBA

Super Precision Angular Contact Ball Bearings 71813 CD/P4DBA

The 71813 CD/P4DBA is a super precision angular contact ball bearing with a 65mm bore and 85mm outer diameter, designed for high-speed applications. It features a 15° contact angle and comes in a matched pair (DB arrangement) for balanced performance.

Made from chrome steel with a phenolic cage, it handles radial loads up to 4972 lbf and spins smoothly at speeds up to 36,000 RPM. The extra light preload ensures minimal friction and precise operation.

Its open design allows easy lubrication, while the P4 tolerance class guarantees exceptional accuracy. Ideal for machine tools or spindle systems where precision and speed are critical.

Weighing just 0.25kg, this bearing is lightweight yet robust. It operates reliably in temperatures from -30°C to 110°C and is interchangeable with SKF models for easy replacement.

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Product Parameters

  • Part Number 71813 CD/P4DBA
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 65 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 85 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 20 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 5.556 mm
  • Ball Qty 29
  • Contact Angle 15°
  • Tolerance Class P4
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 2 bearings <> DB
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing No
  • Preload Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 4972 lbf
  • Static Radial Load 6750 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 36000 rpm
  • Weight 0.25 kg
  • Price（$） 187.866
Super Precision Angular Contact Ball Bearings 71813 CD/P4DBA dimension drawing
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Features

Performance Features of 71813 CD/P4DBA Bearing

71813 CD/P4DBA Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls ensure durability, while the phenolic cage reduces friction for smoother operation.

The bearing’s dynamic radial load capacity reaches 4972 lbf, making it suitable for high-performance machinery.
With a maximum speed of 36,000 rpm, it balances precision and efficiency in demanding conditions.

Preloaded for extra light operation, 71813 CD/P4DBA Bearing maintains accuracy under varying loads.
Its matched arrangement of two bearings enhances stability and extends service life.

Application

Industrial Uses of 71813 CD/P4DBA Bearing
71813 CD/P4DBA Bearing is commonly used in high-precision machine tools, where its angular contact design handles both radial and axial loads efficiently. The matched arrangement ensures stability in demanding industrial environments.

In automotive applications, 71813 CD/P4DBA Bearing supports high-speed components like gearboxes and electric motors. Its phenolic cage reduces friction, making it suitable for long-lasting performance.

For medical imaging devices, 71813 CD/P4DBA Bearing’s P4 tolerance class provides the accuracy needed for smooth operation. The chrome steel construction ensures reliability in critical healthcare equipment.

Automation systems benefit from 71813 CD/P4DBA Bearing’s extra light preload, which enhances precision in robotic arms. The open design allows for easy lubrication, maintaining performance over time.

In consumer electronics, 71813 CD/P4DBA Bearing is ideal for high-speed printers and scanners. Its compact size and durability make it a practical choice for everyday devices.

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