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Super Precision Angular Contact Ball Bearings 71904 ACD/P4ADBC

Super Precision Angular Contact Ball Bearings 71904 ACD/P4ADBC

The 71904 ACD/P4ADBC is a super precision angular contact ball bearing, measuring 20mm by 37mm by 18mm. Made from chrome steel, it’s designed for high-speed applications, handling radial loads up to 2106 lbf.

With a 25° contact angle and moderate preload, it offers smooth rotation at speeds up to 100,500 RPM. The open design and phenolic cage ensure durability and easy maintenance.

This matched set of two bearings (DB arrangement) is ideal for precision machinery like spindles or CNC tools. It operates reliably in temperatures from -30°C to 110°C.

Weighing just 0.07kg, it’s lightweight yet robust. Compliant with P4A tolerance standards, it’s interchangeable with SKF bearings for easy replacement.

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Product Parameters

  • Part Number 71904 ACD/P4ADBC
  • 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 Moderate / Class C
  • 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/P4ADBC dimension drawing
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Features

Performance Features of 71904 ACD/P4ADBC Bearing

71904 ACD/P4ADBC Bearing is designed with a 25° contact angle, optimised for angular contact load applications.
Its chrome steel rings and balls ensure durability, while the phenolic cage maintains alignment for smooth operation.
With a dynamic radial load capacity of 2106 lbf, it handles demanding conditions reliably.
The P4A tolerance class guarantees high precision, making it suitable for precision machinery.

Application

Industrial Uses of 71904 ACD/P4ADBC Bearing
71904 ACD/P4ADBC Bearing is commonly used in high-speed machine tools, where its moderate preload ensures stability during precision operations. The matched pair design helps maintain alignment in spindle applications.

Where Is 71904 ACD/P4ADBC Bearing Used?
You’ll often find 71904 ACD/P4ADBC Bearing in robotics, particularly in articulated arms requiring smooth angular movement. Its phenolic cage reduces friction, making it ideal for repetitive tasks.

Built for Heavy-Duty Use: 71904 ACD/P4ADBC Bearing
71904 ACD/P4ADBC Bearing handles radial and axial loads well, perfect for industrial gearboxes. The chrome steel construction offers durability even in demanding environments.

Automotive vs Aerospace: Applications of 71904 ACD/P4ADBC Bearing
In automotive systems, 71904 ACD/P4ADBC Bearing supports components like turbochargers due to its high-speed capability. Aerospace applications benefit from its precision in control mechanisms.

Perfect Fit for Automation: 71904 ACD/P4ADBC Bearing
71904 ACD/P4ADBC Bearing works well in automated production lines, where consistent performance is key. The open design allows for easy lubrication, extending service life.

Q&A

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