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Super Precision Angular Contact Ball Bearings S71908 ACB/HCP4A

Super Precision Angular Contact Ball Bearings S71908 ACB/HCP4A

The S71908 ACB/HCP4A is a super precision angular contact ball bearing with a 40mm bore and 62mm outer diameter, crafted from chrome steel for durability. Its compact 12mm width makes it suitable for tight spaces.

This bearing handles radial loads up to 1141 lbf and reaches speeds of 32,000 RPM, thanks to its ceramic balls and phenolic cage. The 25° contact angle ensures smooth operation under angular loads.

Sealed for protection, it comes pre-lubricated and is available with preload or matched arrangements for precise applications. Ideal for high-speed machinery like spindles or dental tools where accuracy is key.

Weighing just 0.12kg, it meets P4 tolerance standards (ABEC-7) for exceptional performance. Works reliably in temperatures from -30°C to 110°C.

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Product Parameters

  • Part Number S71908 ACB/HCP4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 40 mm
  • Bore Dia Tolerance -0.006mm to 0
  • Outer Dia 62 mm
  • Outer Dia Tolerance -0.007mm to 0
  • Width 12 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 3.969 mm
  • Ball Qty 28
  • Contact Angle 25°
  • Tolerance Class P4 (ABEC-7)
  • System of Measurement Metric
  • Seal Type Sealed
  • Matched Arrangement Available
  • Preload Available
  • 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° to 110 °C
  • Max Speed 32000 rpm
  • Weight 0.12 kg
  • Price（$） 288.126
Super Precision Angular Contact Ball Bearings S71908 ACB/HCP4A dimension drawing
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Features

How Is S71908 ACB/HCP4A Bearing Engineered for Reliability?

S71908 ACB/HCP4A Bearing features a 25° contact angle, optimised for handling combined radial and axial loads.
Its chrome steel rings and ceramic balls enhance durability while reducing friction for smoother operation.

The phenolic cage maintains ball alignment, ensuring consistent performance even at high speeds up to 32,000 rpm.
Precision P4 tolerance guarantees reliable operation in applications demanding tight rotational accuracy.

Sealed design protects against contaminants, extending service life in challenging environments.
With a dynamic radial load capacity of 1141 lbf, it delivers dependable performance under stress.

Application

Key Fields for S71908 ACB/HCP4A Bearing
S71908 ACB/HCP4A Bearing is widely used in high-speed machine tools, where its precision angular contact design ensures accurate spindle rotation. The ceramic balls reduce friction, making it ideal for applications demanding smooth operation.

In robotics, S71908 ACB/HCP4A Bearing supports articulated arms, providing stability and durability during repetitive movements. Its phenolic cage offers lightweight performance, enhancing efficiency in automated systems.

For medical imaging devices, S71908 ACB/HCP4A Bearing’s sealed design prevents contamination, crucial for maintaining hygiene standards. The P4 tolerance class guarantees consistent performance in sensitive equipment.

In aerospace applications, S71908 ACB/HCP4A Bearing handles both radial and axial loads, making it suitable for flight control systems. Its high-speed capability ensures reliable performance under demanding conditions.

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