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Super Precision Angular Contact Ball Bearings 71904 ACEGA/HCP4A

Super Precision Angular Contact Ball Bearings 71904 ACEGA/HCP4A

The 71904 ACEGA/HCP4A is a super precision angular contact ball bearing with a 20mm bore and 37mm outer diameter, crafted from chrome steel for durability. Its compact 9mm width and ceramic balls ensure smooth operation at high speeds.

With a 25° contact angle, it handles radial loads up to 1053 lbf and spins at speeds up to 75,000 RPM. The phenolic cage provides stability, while the extra light preload ensures minimal friction.

This open-design bearing is lubricated for easy maintenance and works in temperatures from -30°C to 110°C. It’s interchangeable with SKF bearings, making replacements straightforward.

Ideal for high-speed applications like spindles or precision tools, it’s lightweight at just 0.032kg. Compliant with P4A tolerance standards for reliable performance.

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Product Parameters

  • Part Number 71904 ACEGA/HCP4A
  • 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 9 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 4.762 mm
  • Ball Qty 14
  • 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 1053 lbf
  • Static Radial Load 504 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 75000 rpm
  • Weight 0.032 kg
Super Precision Angular Contact Ball Bearings 71904 ACEGA/HCP4A dimension drawing
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Features

Performance Features of 71904 ACEGA/HCP4A Bearing

71904 ACEGA/HCP4A Bearing is crafted with chrome steel rings and ceramic balls, ensuring smooth operation under high-speed conditions.
Its extra light preload design enhances precision, making it ideal for angular contact applications.

The phenolic cage maintains ball alignment, reducing friction and wear during operation.
With a maximum speed of 75,000 rpm, it delivers reliable performance in demanding environments.

71904 ACEGA/HCP4A Bearing’s dynamic radial load capacity of 1053 lbf ensures durability.
Its open design allows for easy lubrication, extending service life and reducing maintenance needs.

The temperature range of -30°C to 110°C makes it suitable for various operating conditions.
Its P4A tolerance class guarantees high precision and consistent performance.

Application

Key Fields for 71904 ACEGA/HCP4A Bearing
71904 ACEGA/HCP4A Bearing is widely used in high-speed machine tools, where its ceramic balls and phenolic cage reduce friction and heat buildup. The extra light preload ensures smooth operation in precision grinding applications.

In robotics, 71904 ACEGA/HCP4A Bearing supports articulated arms, providing stability during rapid movements. Its P4A tolerance class makes it suitable for tasks requiring exact positioning.

For dental drills, 71904 ACEGA/HCP4A Bearing’s chrome steel rings and ceramic balls offer durability and quiet performance. The open design allows for easy lubrication, extending service life in demanding medical environments.

Automotive testing equipment benefits from 71904 ACEGA/HCP4A Bearing’s ability to handle angular loads at high speeds. Its metric sizing ensures compatibility with European and Asian machinery standards.

In 3D printers, 71904 ACEGA/HCP4A Bearing’s low friction and high-speed capabilities contribute to precise layer deposition. The phenolic cage resists wear, even with continuous use.

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