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Super Precision Angular Contact Ball Bearings 71821 CD/P4TBTM

Super Precision Angular Contact Ball Bearings 71821 CD/P4TBTM

The 71821 CD/P4TBTM is a super precision angular contact ball bearing with a 105mm bore and 130mm outer diameter, designed for high-speed applications. It handles radial loads up to 11115 lbf and spins smoothly at speeds up to 16000 RPM.

Made from durable chrome steel with a phenolic cage, it offers excellent stability and low friction. The 15° contact angle and matched arrangement of three bearings ensure precise performance under angular loads.

Its open design allows for easy lubrication, while the P4 tolerance class guarantees tight precision. Ideal for machine tools or spindle applications where accuracy is crucial.

Weighing 0.96kg, it operates in temperatures from -30°C to 110°C. This model is interchangeable with SKF bearings, making it a reliable choice for replacements.

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Product Parameters

  • Part Number 71821 CD/P4TBTM
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 105 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 130 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 39 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 7.144 mm
  • Ball Qty 35
  • Contact Angle 15°
  • Tolerance Class P4
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 3 bearings <>> TBT
  • Number Of Bearings In Matched Set 3
  • Universal Matching Bearing No
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 11115 lbf
  • Static Radial Load 20250 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16000 rpm
  • Weight 0.96 kg
Super Precision Angular Contact Ball Bearings 71821 CD/P4TBTM dimension drawing
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Features

Why Choose 71821 CD/P4TBTM Bearing for Precision Tasks?

71821 CD/P4TBTM Bearing features a 15° contact angle, ideal for high-precision angular contact applications.
Its chrome steel construction ensures durability and smooth operation under dynamic radial loads up to 11115 lbf.
The phenolic cage maintains ball alignment, reducing friction and enhancing performance.
With a maximum speed of 16,000 rpm, it is suited for demanding, high-speed environments.

Application

Industrial Uses of 71821 CD/P4TBTM Bearing
71821 CD/P4TBTM Bearing is commonly used in high-precision machine tools, where its 15° contact angle ensures accurate radial and axial load distribution. The matched set of three bearings provides enhanced stability for demanding operations.

In automotive applications, 71821 CD/P4TBTM Bearing supports high-speed components like turbochargers and transmission systems. Its phenolic cage offers excellent heat resistance, making it suitable for engine environments.

For robotics, 71821 CD/P4TBTM Bearing’s P4 tolerance class ensures smooth movement in articulated arms and precision gears. The open design allows for easy lubrication, extending service life in continuous operation.

Medical imaging devices benefit from 71821 CD/P4TBTM Bearing’s low-noise performance and consistent accuracy. The chrome steel construction provides durability in sterile environments.

In aerospace, 71821 CD/P4TBTM Bearing handles both radial and thrust loads in navigation systems and actuators. Its lightweight design and high-speed capability make it a reliable choice for flight-critical components.

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