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Super Precision Angular Contact Ball Bearings 71821 CD/P4DBA

Super Precision Angular Contact Ball Bearings 71821 CD/P4DBA

The 71821 CD/P4DBA is a super precision angular contact ball bearing with a 105mm bore and 130mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 8348 lbf and operates smoothly at speeds up to 16,000 RPM.

Its 15° contact angle and matched pair design (DB arrangement) provide excellent stability for angular loads. The phenolic cage ensures quiet operation and long service life.

This bearing is preloaded for extra light performance, making it ideal for high-precision applications like machine tool spindles. It works in temperatures from -30°C to 110°C.

Weighing 0.64kg, it’s a robust yet manageable size. Compliant with P4 tolerance standards, it’s interchangeable with SKF bearings for easy replacement. Perfect for scenarios demanding both precision and durability.

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Product Parameters

  • Part Number 71821 CD/P4DBA
  • 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 26 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 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 8348 lbf
  • Static Radial Load 13500 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16000 rpm
  • Weight 0.64 kg
Super Precision Angular Contact Ball Bearings 71821 CD/P4DBA dimension drawing
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Features

Performance Features of 71821 CD/P4DBA Bearing

71821 CD/P4DBA Bearing is crafted with a 15° contact angle, optimising load distribution for precision applications.
Its matched arrangement of two bearings ensures stability and accuracy in high-speed operations.

The chrome steel rings and balls enhance durability, while the phenolic cage reduces friction and noise.
With a dynamic radial load capacity of 8348 lbf, it handles demanding conditions effortlessly.

Designed for extra light preload, 71821 CD/P4DBA Bearing maintains smooth operation up to 16,000 rpm.
Its P4 tolerance class guarantees consistent performance in precision machinery.

The open seal type allows for easy lubrication, extending the bearing’s service life.
Operating between -30°C to 110°C, it adapts to various industrial environments.

Application

Industrial Uses of 71821 CD/P4DBA Bearing
71821 CD/P4DBA Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The matched arrangement of two bearings provides stability in demanding industrial environments.

Where Is 71821 CD/P4DBA Bearing Used?
In automotive applications, 71821 CD/P4DBA Bearing supports high-speed components like turbochargers and transmission systems. Its extra-light preload helps reduce friction, improving overall efficiency.

Optimized for Performance: 71821 CD/P4DBA Bearing
For medical imaging devices, 71821 CD/P4DBA Bearing offers reliable performance due to its chrome steel construction and phenolic cage. The P4 tolerance class ensures consistent operation in sensitive equipment.

Light-Duty vs Heavy-Duty: Best Uses for 71821 CD/P4DBA Bearing
In robotics, 71821 CD/P4DBA Bearing is ideal for precision joints and arms, thanks to its low friction and high-speed capability. The open design allows for easy lubrication, extending service life in continuous operations.

Q&A

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