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Super Precision Angular Contact Ball Bearings 71904 ACDGC/P4A

Super Precision Angular Contact Ball Bearings 71904 ACDGC/P4A

The 71904 ACDGC/P4A is a super precision angular contact ball bearing measuring 20mm by 37mm by 9mm, crafted from high-quality chrome steel. It features a 25° contact angle and moderate preload for balanced performance.

This bearing handles radial loads up to 1287 lbf and spins at speeds up to 75,000 RPM, making it suitable for high-speed applications. Its open design and phenolic cage ensure smooth operation and durability.

With a P4A tolerance class, it offers excellent precision for demanding tasks. The bearing works in temperatures from -30°C to 110°C and comes pre-lubricated for easy use.

Ideal for precision machinery like spindles or CNC equipment, this model is interchangeable with SKF bearings. Weighing just 0.035kg, it’s lightweight yet robust for its size. Universal matching options allow flexible mounting configurations.

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Product Parameters

  • Part Number 71904 ACDGC/P4A
  • 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 9 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 No
  • Number Of Bearings In Matched Set 3
  • Universal Matching Bearing Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
  • Preload Moderate / Class C
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 1287 lbf
  • Static Radial Load 686 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 75000 rpm
  • Weight 0.035 kg
Super Precision Angular Contact Ball Bearings 71904 ACDGC/P4A dimension drawing
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Features

How Does 71904 ACDGC/P4A Bearing Achieve Super Precision?

71904 ACDGC/P4A Bearing features a 25° contact angle, ensuring precise load distribution for high-speed applications.
Its chrome steel construction provides durability, while the phenolic cage reduces friction and noise.

With a dynamic radial load capacity of 1287 lbf, it handles demanding tasks with ease.
The P4A tolerance class guarantees exceptional accuracy, making it ideal for precision machinery.

Operating at speeds up to 75,000 rpm, it maintains performance without compromising reliability.
Its moderate preload (Class C) ensures smooth operation, even under angular contact loads.

Application

Key Fields for 71904 ACDGC/P4A Bearing
71904 ACDGC/P4A Bearing is commonly used in high-speed machine tools, where its precision and moderate preload ensure accurate spindle performance. The 25° contact angle helps manage combined radial and axial loads effectively.

In robotics, 71904 ACDGC/P4A Bearing supports articulated arms, providing smooth motion control with minimal friction. Its phenolic cage offers durability in repetitive, high-speed operations.

For medical imaging devices, 71904 ACDGC/P4A Bearing’s P4A tolerance class guarantees the precision needed for stable rotation. The chrome steel construction ensures long-term reliability in critical applications.

Automotive applications like electric vehicle motors benefit from 71904 ACDGC/P4A Bearing’s high-speed capability and angular contact design. Its metric sizing makes it compatible with various European and Asian automotive standards.

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