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Super Precision Angular Contact Ball Bearings 71904 ACD/P4ADBD

Super Precision Angular Contact Ball Bearings 71904 ACD/P4ADBD

The 71904 ACD/P4ADBD is a super precision angular contact ball bearing, measuring 20mm by 37mm by 18mm. Made from chrome steel, it’s designed for heavy preload and high-speed operations, handling radial loads up to 2106 lbf.

With a 25° contact angle and open design, it offers smooth rotation at speeds up to 100,500 RPM. The phenolic cage ensures durability and reduces friction during use.

This matched set of two bearings (DB arrangement) is ideal for applications requiring high precision, such as machine tools or spindle drives. It operates well in temperatures from -30°C to 110°C.

Weighing just 0.07kg, it’s lightweight yet robust. Compatible with SKF bearings, it’s a reliable choice for replacements or upgrades in precision machinery.

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Product Parameters

  • Part Number 71904 ACD/P4ADBD
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 20 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 37 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 18 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 4.762 mm
  • Ball Qty 15
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 2 bearings <> DB
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing No
  • Preload Heavy / Class D
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 2106 lbf
  • Static Radial Load 1372 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 100500 rpm
  • Weight 0.07 kg
Super Precision Angular Contact Ball Bearings 71904 ACD/P4ADBD dimension drawing
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Features

Performance Features of 71904 ACD/P4ADBD Bearing

71904 ACD/P4ADBD Bearing is designed with a 25° contact angle, ideal for handling combined radial and axial loads.

Its chrome steel rings and balls ensure durability, while the phenolic cage reduces friction for smoother operation.

With a dynamic radial load capacity of 2106 lbf, it performs reliably in high-speed applications.

The P4A tolerance class guarantees precision, making it suitable for demanding tasks.

Application

Common Applications of 71904 ACD/P4ADBD Bearing
71904 ACD/P4ADBD Bearing is widely used in high-speed machine tools, where its precision angular contact design ensures accurate spindle rotation. The heavy preload and P4A tolerance class make it suitable for demanding industrial environments.

In robotics, 71904 ACD/P4ADBD Bearing supports articulated arms, providing smooth movement and long service life. The matched arrangement of two bearings enhances stability in dynamic applications.

For aerospace components, 71904 ACD/P4ADBD Bearing’s chrome steel construction handles both radial and axial loads efficiently. Its high-speed capability makes it a reliable choice for aircraft systems.

Medical imaging devices benefit from 71904 ACD/P4ADBD Bearing’s low noise and vibration. The phenolic cage material ensures quiet operation, crucial for sensitive diagnostic equipment.

In automotive transmissions, 71904 ACD/P4ADBD Bearing offers durability under heavy loads. The 25° contact angle optimises performance in gearbox applications.

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