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Super Precision Angular Contact Ball Bearings 71905 CD/HCP4A

Super Precision Angular Contact Ball Bearings 71905 CD/HCP4A

The 71905 CD/HCP4A is a super precision angular contact ball bearing with a 25mm bore and 42mm outer diameter, crafted from durable chrome steel and ceramic balls. It handles radial loads up to 1521 lbf and spins smoothly at high speeds up to 70,000 RPM.

Its 15° contact angle and phenolic cage ensure stable performance, while the open design allows for easy lubrication. The bearing operates well in temperatures from -30°C to 110°C.

This model is interchangeable with SKF bearings, making it a reliable choice for replacements. Ideal for high-speed applications like machine tool spindles or precision instruments where accuracy is key.

Weighing just 0.039kg, it’s lightweight yet robust for its size. Compliant with P4 (ABEC-7) tolerance standards for precise operation.

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Product Parameters

  • Part Number 71905 CD/HCP4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 25 mm
  • Bore Dia Tolerance -0.005mm to 0
  • Outer Dia 42 mm
  • Outer Dia Tolerance -0.006mm to 0
  • Width 9 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 4.762 mm
  • Ball Qty 18
  • Contact Angle 15°
  • Tolerance Class P4 (ABEC-7)
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement No
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 1521 lbf
  • Static Radial Load 900 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 70000 rpm
  • Weight 0.039 kg
  • Price（$） 97.974
Super Precision Angular Contact Ball Bearings 71905 CD/HCP4A dimension drawing
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Features

Performance Features of 71905 CD/HCP4A Bearing

71905 CD/HCP4A Bearing is crafted with a 15° contact angle, ideal for precision angular contact applications.
Its chrome steel rings and ceramic balls ensure smooth operation even at high speeds up to 70,000 rpm.

The phenolic cage in 71905 CD/HCP4A Bearing reduces friction, enhancing efficiency and durability.
With a dynamic radial load capacity of 1521 lbf, it handles demanding tasks reliably.

71905 CD/HCP4A Bearing operates in temperatures from -30° to 110°C, suitable for varied environments.
Its P4 tolerance class guarantees precision, making it a dependable choice for high-performance machinery.

Application

Key Fields for 71905 CD/HCP4A Bearing
71905 CD/HCP4A Bearing is commonly 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, 71905 CD/HCP4A Bearing supports articulated arms, providing stability during repetitive movements. Its phenolic cage offers lightweight durability, which is crucial for energy-efficient automation systems.

For dental drills and other medical devices, 71905 CD/HCP4A Bearing’s P4 tolerance class guarantees consistent performance. The open design allows for easy lubrication, extending service life in sterile environments.

Where to Use 71905 CD/HCP4A Bearing
71905 CD/HCP4A Bearing fits well in 3D printers, where its low friction and high-speed capability enhance print quality. The compact 25 mm×42 mm×9 mm size suits space-constrained setups.

In electric vehicle motors, 71905 CD/HCP4A Bearing handles radial and axial loads efficiently. Its temperature range of -30° to 110 °C ensures reliability under varying operating conditions.

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