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Super Precision Angular Contact Ball Bearings 71908 ACBGA/HCP4AL

Super Precision Angular Contact Ball Bearings 71908 ACBGA/HCP4AL

The 71908 ACBGA/HCP4AL is a super precision angular contact ball bearing, measuring 40mm by 62mm by 12mm. Made from chrome steel with ceramic balls, it offers smooth operation and high durability.

It handles radial loads up to 1141 lbf and spins at speeds up to 56,000 RPM, making it suitable for high-performance applications. The extra-light preload ensures minimal friction and precise movement.

Its open design allows easy lubrication, while the phenolic cage provides stability. The bearing works in temperatures from -30°C to 110°C, ideal for demanding environments.

This model is interchangeable with SKF bearings and comes in a universal matching set for versatile mounting options. Perfect for precision machinery like spindles or high-speed tools where accuracy is key.

Weighing just 0.11kg, it’s lightweight yet robust, meeting P4A tolerance standards for exceptional performance.

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Product Parameters

  • Part Number 71908 ACBGA/HCP4AL
  • 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 3.969 mm
  • Ball Qty 28
  • 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 Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 1141 lbf
  • Static Radial Load 878 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 56000 rpm
  • Weight 0.11 kg
Super Precision Angular Contact Ball Bearings 71908 ACBGA/HCP4AL dimension drawing
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Features

Performance Features of 71908 ACBGA/HCP4AL Bearing

71908 ACBGA/HCP4AL Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and ceramic balls enhance durability while reducing friction.

The phenolic cage ensures smooth operation, even at high speeds up to 56,000 rpm.
With a dynamic radial load capacity of 1141 lbf, it delivers reliable performance in precision tasks.

71908 ACBGA/HCP4AL Bearing operates efficiently within a temperature range of -30°C to 110°C.
Its P4A tolerance class guarantees high precision, making it suitable for demanding applications.

The open design allows for easy lubrication, maintaining optimal performance over time.
Its lightweight construction at 0.11 kg ensures minimal impact on overall system weight.

Application

Common Applications of 71908 ACBGA/HCP4AL Bearing
71908 ACBGA/HCP4AL Bearing is widely used in high-speed machine spindles, where its ceramic balls and phenolic cage reduce friction and heat buildup. The P4A tolerance ensures precise rotation, ideal for CNC machining centres.

In robotics, 71908 ACBGA/HCP4AL Bearing supports articulated arms, providing smooth motion control thanks to its 25° contact angle. The extra-light preload minimises vibration, enhancing positioning accuracy.

For dental drills and surgical tools, 71908 ACBGA/HCP4AL Bearing’s chrome steel rings offer durability in sterilisation cycles. Its lubricated design maintains performance in high-RPM medical applications.

Where Is 71908 ACBGA/HCP4AL Bearing Used?
You’ll find 71908 ACBGA/HCP4AL Bearing in precision grinding equipment, where its matched arrangement options (back-to-back or tandem) handle combined radial and axial loads. The 56,000 rpm rating suits demanding industrial processes.

In optical lens positioning systems, 71908 ACBGA/HCP4AL Bearing’s phenolic cage dampens vibrations for sharper image alignment. The ceramic balls prevent electrical arcing in sensitive electronic environments.

Built for Heavy-Duty Use: 71908 ACBGA/HCP4AL Bearing
71908 ACBGA/HCP4AL Bearing excels in turbine flow meters, withstanding continuous operation in oil and gas applications. Its -30°C to 110°C range performs reliably in extreme temperatures.

For 3D printer extruders, 71908 ACBGA/HCP4AL Bearing maintains dimensional stability during rapid directional changes. The open design allows easy relubrication for prolonged service life.

Automotive vs Aerospace: Applications of 71908 ACBGA/HCP4AL Bearing
In automotive turbochargers, 71908 ACBGA/HCP4AL Bearing handles thrust loads from exhaust gases while minimising rotational drag. The metric sizing fits compact European engine designs.

Aircraft gyroscopes utilise 71908 ACBGA/HCP4AL Bearing for its vibration damping in navigation systems. The ceramic balls resist degradation from altitude pressure changes.

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