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Super Precision Angular Contact Ball Bearings 71904 ACDGB/P4A

Super Precision Angular Contact Ball Bearings 71904 ACDGB/P4A

The 71904 ACDGB/P4A is a super precision angular contact ball bearing with a 20mm bore and 37mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 1287 lbf and spins smoothly at speeds up to 75,000 RPM.

Its 25° contact angle and light preload ensure stable performance in high-speed applications. The phenolic cage reduces friction and wear, while the open design allows for easy lubrication.

This bearing is ideal for precision machinery like spindles or CNC tools, where accuracy and speed are crucial. It can be paired in back-to-back, face-to-face, or tandem arrangements for versatile use.

Weighing just 0.035kg, it’s lightweight yet robust. Compliant with P4A tolerance standards, it offers reliable performance in temperatures from -30°C to 110°C.

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Product Parameters

  • Part Number 71904 ACDGB/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 Light / Class B
  • 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 ACDGB/P4A dimension drawing
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Features

Performance Features of 71904 ACDGB/P4A Bearing

71904 ACDGB/P4A Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls ensure durability and consistent performance under dynamic radial loads up to 1287 lbf.

The phenolic cage maintains ball alignment, reducing friction and enhancing operational smoothness.
With a maximum speed of 75,000 rpm, it is suitable for high-speed precision tasks.

71904 ACDGB/P4A Bearing operates efficiently within a temperature range of -30°C to 110°C.
Its P4A tolerance class guarantees high precision and reliability in demanding conditions.

Application

Key Fields for 71904 ACDGB/P4A Bearing
71904 ACDGB/P4A Bearing is widely used in high-speed machine tools, where its precision angular contact design ensures accurate spindle rotation. The light preload helps maintain stability during demanding operations.

Where Is 71904 ACDGB/P4A Bearing Used?
You’ll often find 71904 ACDGB/P4A Bearing in robotics, particularly in articulated arms requiring smooth, low-friction movement. Its phenolic cage reduces weight while maintaining strength.

Optimized for Performance: 71904 ACDGB/P4A Bearing
In dental drills and other medical devices, 71904 ACDGB/P4A Bearing offers reliable performance due to its chrome steel construction. The P4A tolerance class ensures consistent accuracy.

Automotive vs Aerospace: Applications of 71904 ACDGB/P4A Bearing
71904 ACDGB/P4A Bearing works well in automotive transmissions, handling angular loads efficiently. In aerospace, its high-speed capability makes it suitable for instrumentation systems.

Practical Applications of 71904 ACDGB/P4A Bearing
For 3D printers, 71904 ACDGB/P4A Bearing provides the precision needed for detailed prints. The open design allows for easy lubrication, extending its service life.

Q&A

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