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Super Precision Angular Contact Ball Bearings 71904 ACEGB/P4A

Super Precision Angular Contact Ball Bearings 71904 ACEGB/P4A

The 71904 ACEGB/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 1053 lbf and spins smoothly at speeds up to 75,000 RPM.

With a 25° contact angle and light preload, it offers precise performance for demanding applications. The open design and phenolic cage ensure reliable operation in temperatures from -30°C to 110°C.

This bearing is ideal for high-speed machinery like spindles or CNC tools, where accuracy is crucial. Weighing just 0.036kg, it’s lightweight yet robust for its size.

It can be paired in back-to-back, face-to-face, or tandem arrangements, making it versatile for various setups. Compatible with SKF bearings for easy replacement.

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Product Parameters

  • Part Number 71904 ACEGB/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 14
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement No
  • Number Of Bearings In Matched Set 2
  • 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 1053 lbf
  • Static Radial Load 504 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 75000 rpm
  • Weight 0.036 kg
Super Precision Angular Contact Ball Bearings 71904 ACEGB/P4A dimension drawing
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Features

Performance Features of 71904 ACEGB/P4A Bearing

71904 ACEGB/P4A 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 1053 lbf, it performs reliably in high-precision applications.
The P4A tolerance class guarantees exceptional accuracy, making it suitable for demanding tasks.

71904 ACEGB/P4A Bearing operates at speeds up to 75,000 rpm, balancing speed and precision.
Its lightweight design at 0.036 kg ensures minimal inertia, enhancing performance in high-speed scenarios.

Application

Key Fields for 71904 ACEGB/P4A Bearing
71904 ACEGB/P4A Bearing is commonly used in high-speed machine spindles, where its precision angular contact design ensures accurate rotation. The light preload helps maintain stability during rapid movements.

In robotics, 71904 ACEGB/P4A Bearing supports articulated arms, providing smooth motion control. Its phenolic cage reduces friction, making it suitable for repetitive tasks.

For dental drills, 71904 ACEGB/P4A Bearing offers reliable performance due to its chrome steel construction. The open design allows for easy lubrication, extending service life.

Where Is 71904 ACEGB/P4A Bearing Used?
You’ll find 71904 ACEGB/P4A Bearing in CNC machining centres, where its high-speed capability and precision are key. The 25° contact angle helps handle combined loads effectively.

In optical equipment, 71904 ACEGB/P4A Bearing ensures minimal vibration for clear imaging. Its P4A tolerance class guarantees consistent performance in sensitive applications.

Built for Heavy-Duty Use: 71904 ACEGB/P4A Bearing
71904 ACEGB/P4A Bearing works well in pump systems, handling both radial and axial loads. The chrome steel balls enhance durability in demanding conditions.

For electric motors, 71904 ACEGB/P4A Bearing reduces energy loss thanks to its low-friction design. The metric sizing fits seamlessly into various industrial setups.

Automotive vs Aerospace: Applications of 71904 ACEGB/P4A Bearing
In automotive transmissions, 71904 ACEGB/P4A Bearing supports smooth gear shifts with its angular contact design. The light preload ensures quiet operation.

Aerospace actuators benefit from 71904 ACEGB/P4A Bearing’s high-speed tolerance and precision. Its temperature range suits both ground and flight conditions.

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