Super Precision Angular Contact Ball Bearings 71904 CE/P4A

The 71904 CE/P4A is a super precision angular contact ball bearing with a 20mm bore and 37mm outer diameter, designed for high-speed applications. Its 15° contact angle efficiently handles combined radial and thrust loads up to 1112 lbf.

Made from chrome steel with a phenolic cage, it offers smooth operation at speeds up to 88,000 RPM. The open design allows easy lubrication, while the P4 tolerance ensures minimal vibration.

This bearing is ideal for precision machinery like spindles or CNC tools where accuracy is crucial. It can also be matched for paired arrangements, providing flexibility in complex setups.

Weighing just 36 grams, it’s lightweight yet durable. The temperature range of -30°C to 110°C makes it suitable for various industrial environments.

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Description

Features

Application

Q&A

Product Parameters

Part Number 71904 CE/P4A
Brand TFL
Interchangeable SKF
Bore Dia 20 mm
Bore Dia Tolerance -0.005mm to 0
Outer Dia 37 mm
Outer Dia Tolerance -0.006mm to 0
Width 9 mm
Width Tolerance -0.2mm to 0
Ball Dia 4.762 mm
Ball Qty 14
Contact Angle 15°
Tolerance Class P4 (ABEC-7)
System of Measurement Metric
Seal Type Open
Matched Arrangement Available
Preload Available
For Load Direction Angular Contact
Ring Material Chrome Steel
Ball Material Chrome Steel
Cage Material Phenolic
Dynamic Radial Load 1112 lbf
Static Radial Load 531 lbf
Lubrication Lubricated
Temperature Range -30° to 110 °C
Max Speed 88000 rpm
Weight 0.036 kg
Price（$） 144.756

Super Precision Angular Contact Ball Bearings 71904 CE/P4A dimension drawing

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Features

Why Choose 71904 CE/P4A Bearing for Precision Tasks?

71904 CE/P4A Bearing features a 15° contact angle, ideal for handling combined radial and axial loads with precision.
Its chrome steel rings and balls ensure durability, while the phenolic cage reduces friction and noise.

With a dynamic radial load capacity of 1112 lbf, it performs reliably in high-speed applications.
The P4 tolerance class guarantees exceptional accuracy, making it suitable for demanding tasks.

71904 CE/P4A Bearing operates smoothly at speeds up to 88,000 rpm, maintaining performance.
Its open design allows for easy lubrication, ensuring long service life with minimal maintenance.

Application

Common Applications of 71904 CE/P4A Bearing
71904 CE/P4A Bearing is widely used in high-speed machine tools, where its precision angular contact design ensures accurate spindle rotation. The phenolic cage reduces friction, making it ideal for continuous operation.

In robotics, 71904 CE/P4A Bearing supports articulated arms, providing smooth movement with minimal vibration. Its 15° contact angle offers excellent load distribution for dynamic applications.

For medical imaging devices, 71904 CE/P4A Bearing’s P4 tolerance class guarantees quiet and reliable performance. The chrome steel construction ensures durability in sterile environments.

Automotive applications like electric vehicle motors benefit from 71904 CE/P4A Bearing’s high-speed capabilities. The matched arrangement option simplifies installation in compact spaces.