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Super Precision Angular Contact Ball Bearings 71908/VA9D1

Super Precision Angular Contact Ball Bearings 71908/VA9D1

The 71908/VA9D1 is a super precision angular contact ball bearing with a 40mm bore and 62mm outer diameter, crafted from durable chrome steel. Its 25° contact angle efficiently manages combined radial and axial loads, suitable for high-speed applications.

With a phenolic cage and preload option, it offers smooth operation at speeds up to 41,000 RPM. The open design allows easy lubrication, enhancing its performance in demanding conditions.

This bearing is ideal for precision machinery like spindles or CNC equipment, 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 0.11kg, it meets P4 tolerance standards and operates reliably between -30°C and 110°C. Interchangeable with SKF bearings, it’s a practical choice for replacements or upgrades.

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Product Parameters

  • Part Number 71908/VA9D1
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 40 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 62 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 12 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 6.35 mm
  • Ball Qty 21
  • Contact Angle 25°
  • Tolerance Class P4
  • 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 Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 2632 lbf
  • Static Radial Load 1800 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 41000 rpm
  • Weight 0.11 kg
Super Precision Angular Contact Ball Bearings 71908/VA9D1 dimension drawing
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Features

How Does 71908/VA9D1 Bearing Achieve Super Precision?

71908/VA9D1 Bearing features a 25° contact angle, optimised for high-precision angular contact applications.
Its chrome steel rings and balls ensure durability and smooth operation under dynamic radial loads up to 2632 lbf.
The phenolic cage maintains ball alignment, reducing friction and enhancing performance at speeds up to 41,000 rpm.
With a P4 tolerance class, it delivers consistent accuracy in demanding conditions.

Application

Industrial Uses of 71908/VA9D1 Bearing
71908/VA9D1 Bearing is commonly used in high-speed machine spindles, where its 25° contact angle provides excellent radial and axial load capacity.
The open design and phenolic cage make it suitable for applications requiring minimal friction and heat generation.

How Does 71908/VA9D1 Bearing Improve Performance?
In precision grinding machines, 71908/VA9D1 Bearing ensures smooth rotation thanks to its P4 tolerance class.
Its chrome steel construction also offers durability in demanding industrial environments.

Perfect Fit for Automation: 71908/VA9D1 Bearing
71908/VA9D1 Bearing works well in robotic arms, providing reliable angular contact support for precise movements.
The lubricated design helps maintain performance over long periods of continuous operation.

Automotive vs Aerospace: Applications of 71908/VA9D1 Bearing
In automotive systems, 71908/VA9D1 Bearing can be found in high-performance gearboxes due to its dynamic load capacity.
For aerospace applications, its lightweight design and precision make it ideal for instrumentation and control systems.

Q&A

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