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Super Precision Angular Contact Ball Bearings 71938 CDGB/P4A

Super Precision Angular Contact Ball Bearings 71938 CDGB/P4A

The 71938 CDGB/P4A is a super precision angular contact ball bearing with a 190mm bore and 260mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 38700 lbf and operates smoothly at speeds up to 16250 RPM.

With a 15° contact angle and light preload, it offers excellent accuracy for demanding applications. The open design and phenolic cage ensure durability and easy maintenance.

This bearing is part of a universal matching set, suitable for back-to-back, face-to-face, or tandem arrangements. Ideal for high-precision machinery like spindles or CNC equipment where reliability is key.

Weighing 4.35kg, it’s robust yet efficient, working in temperatures from -30°C to 110°C. Compliant with P4A tolerance standards for consistent performance.

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Product Parameters

  • Part Number 71938 CDGB/P4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 190 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 260 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 33 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 22.225 mm
  • Ball Qty 28
  • Contact Angle 15°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement No
  • Number Of Bearings In Matched Set 4
  • Universal Matching Bearing Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
  • Preload Light / Class B
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 38700 lbf
  • Static Radial Load 49500 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16250 rpm
  • Weight 4.35 kg
Super Precision Angular Contact Ball Bearings 71938 CDGB/P4A dimension drawing
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Features

Performance Features of 71938 CDGB/P4A Bearing

71938 CDGB/P4A Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.

The chrome steel rings and balls enhance durability, supporting dynamic radial loads up to 38,700 lbf.

Its phenolic cage ensures smooth operation at high speeds, reaching up to 16,250 rpm.

With a P4A tolerance class, it delivers precision performance in demanding conditions.

How Is 71938 CDGB/P4A Bearing Engineered for Reliability?

71938 CDGB/P4A Bearing’s chrome steel construction resists wear, ensuring long-term reliability.

The open design allows for easy lubrication, maintaining smooth operation even under heavy loads.

Its light preload (Class B) reduces friction, enhancing efficiency and extending service life.

The bearing operates efficiently within a temperature range of -30°C to 110°C.

Built for Precision: 71938 CDGB/P4A Bearing

71938 CDGB/P4A Bearing’s high-precision design meets P4A tolerance standards for accurate performance.

The 28 chrome steel balls, each 22.225 mm in diameter, ensure even load distribution and reduced vibration.

Its universal matching capability allows for flexible configurations like back-to-back or face-to-face arrangements.

Weighing 4.35 kg, it balances strength and precision in industrial applications.

Steel vs Ceramic Bearings: Strengths of 71938 CDGB/P4A Bearing

71938 CDGB/P4A Bearing’s chrome steel construction offers superior strength for heavy radial loads.

Compared to ceramic alternatives, it provides better cost-efficiency without compromising performance.

The phenolic cage minimises friction, making it suitable for high-speed applications up to 16,250 rpm.

Its static radial load capacity of 49,500 lbf ensures reliability in demanding environments.

Application

Key Fields for 71938 CDGB/P4A Bearing
71938 CDGB/P4A Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The light preload helps maintain stability during high-speed operations.

In aerospace applications, 71938 CDGB/P4A Bearing supports critical components like helicopter transmissions, thanks to its robust chrome steel construction. The phenolic cage reduces friction, enhancing performance under demanding conditions.

For automation systems, 71938 CDGB/P4A Bearing is ideal for robotic arms requiring smooth and precise movement. Its open design allows for easy lubrication, ensuring long service life in continuous operation.

Medical imaging devices benefit from 71938 CDGB/P4A Bearing’s low noise and vibration characteristics. The P4A tolerance class guarantees consistent performance in sensitive environments.

Q&A

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