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Super Precision Angular Contact Ball Bearings 71904 CDGA/HCP4A

Super Precision Angular Contact Ball Bearings 71904 CDGA/HCP4A

The 71904 CDGA/HCP4A is a super precision angular contact ball bearing measuring 20mm by 37mm by 9mm, crafted from chrome steel with ceramic balls for enhanced performance. It handles radial loads up to 1361 lbf and reaches speeds of 100,000 RPM, making it suitable for high-speed applications.

Its 15° contact angle and extra light preload ensure smooth operation with minimal friction. The phenolic cage adds durability while keeping the weight light at just 0.033kg.

This bearing is ideal for precision machinery like spindles or CNC tools, where accuracy and speed are crucial. It operates efficiently in temperatures from -30°C to 110°C.

Compatible with SKF bearings, it offers flexibility in matched sets for back-to-back, face-to-face, or tandem arrangements. A reliable choice for demanding engineering tasks.

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Product Parameters

  • Part Number 71904 CDGA/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 15
  • Contact Angle 15°
  • 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 1361 lbf
  • Static Radial Load 720 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 100000 rpm
  • Weight 0.033 kg
Super Precision Angular Contact Ball Bearings 71904 CDGA/HCP4A dimension drawing
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Features

Performance Features of 71904 CDGA/HCP4A Bearing

71904 CDGA/HCP4A Bearing features a 15° contact angle, optimised for precision angular contact applications.
Its chrome steel rings and ceramic balls ensure smooth operation even at high speeds up to 100,000 rpm.

The phenolic cage design reduces friction and wear, enhancing the bearing’s longevity.
With a dynamic radial load capacity of 1361 lbf, it handles demanding tasks with ease.

71904 CDGA/HCP4A Bearing operates efficiently in temperatures ranging from -30°C to 110°C.
Its P4A tolerance class guarantees high precision and reliability in performance-critical applications.

Application

Industrial Uses of 71904 CDGA/HCP4A Bearing
71904 CDGA/HCP4A Bearing is commonly 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.

Where Is 71904 CDGA/HCP4A Bearing Used?
You’ll often find 71904 CDGA/HCP4A Bearing in spindle systems for CNC machines, thanks to its P4A tolerance class and angular contact design. It’s also a reliable choice for high-speed robotics, where consistent performance is key.

Optimized for Performance: 71904 CDGA/HCP4A Bearing
71904 CDGA/HCP4A Bearing excels in aerospace applications, such as gyroscopes and avionics, due to its ceramic balls and chrome steel rings. The open design allows for easy lubrication, extending its service life in demanding conditions.

Automotive vs Aerospace: Applications of 71904 CDGA/HCP4A Bearing
In automotive systems, 71904 CDGA/HCP4A Bearing supports electric motor shafts, while in aerospace, it’s used in flight control systems. The metric sizing and universal matching make it versatile for both industries.

Q&A

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