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Super Precision Angular Contact Ball Bearings 71938 CD/P4ADGB

Super Precision Angular Contact Ball Bearings 71938 CD/P4ADGB

The 71938 CD/P4ADGB 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 62100 lbf and operates smoothly at speeds up to 16250 RPM.

With a 15° contact angle and universal matching design, it offers flexibility for back-to-back, face-to-face, or tandem arrangements. The phenolic cage ensures durability and reduces friction for efficient performance.

This bearing is ideal for high-precision applications like machine tool spindles or industrial gearboxes. Its P4A tolerance class guarantees exceptional accuracy, while the open design allows for easy lubrication.

Weighing 8.7kg, it’s robust yet manageable for its size. Compliant with standard temperature ranges from -30°C to 110°C, it’s a reliable choice for demanding environments. Interchangeable with SKF bearings for convenient replacements.

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Product Parameters

  • Part Number 71938 CD/P4ADGB
  • 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 66 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 Universal matching
  • Number Of Bearings In Matched Set 2
  • 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 62100 lbf
  • Static Radial Load 99000 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16250 rpm
  • Weight 8.7 kg
  • Price（$） 2663.856
Super Precision Angular Contact Ball Bearings 71938 CD/P4ADGB dimension drawing
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Features

Performance Features of 71938 CD/P4ADGB Bearing

71938 CD/P4ADGB Bearing is crafted with chrome steel rings and balls, offering high precision and durability.

Its 15° contact angle ensures optimal performance in angular contact applications, handling dynamic radial loads up to 62,100 lbf.

The phenolic cage maintains ball alignment, reducing friction and enhancing longevity.

With a maximum speed of 16,250 rpm, it delivers smooth operation in demanding conditions.

How Is 71938 CD/P4ADGB Bearing Engineered for Reliability?

71938 CD/P4ADGB Bearing features universal matching, allowing flexible arrangements like back-to-back or face-to-face.

Its light preload (Class B) ensures consistent performance while minimising wear.

The open design and lubrication compatibility make it suitable for various industrial applications.

Operating between -30°C to 110°C, it maintains reliability across a wide temperature range.

Designed for Durability: 71938 CD/P4ADGB Bearing

71938 CD/P4ADGB Bearing’s chrome steel construction resists wear, even under heavy static radial loads up to 99,000 lbf.

The precision P4A tolerance class guarantees high accuracy for critical applications.

With 28 balls of 22.225 mm diameter, it ensures even load distribution and smooth rotation.

Weighing 8.7 kg, it balances robustness with manageable handling.

Application

Common Applications of 71938 CD/P4ADGB Bearing
In industrial settings, 71938 CD/P4ADGB Bearing is widely used in high-precision machine tools and spindle systems, where its 15° contact angle ensures smooth operation under radial and axial loads. The universal matching design allows for flexible arrangements, making it suitable for complex machinery setups.

Where Is 71938 CD/P4ADGB Bearing Used?
You’ll often find 71938 CD/P4ADGB Bearing in automotive applications like high-performance gearboxes and electric motor systems, thanks to its light preload and excellent speed capabilities. Its phenolic cage also reduces friction, enhancing efficiency in demanding conditions.

Built for Heavy-Duty Use: 71938 CD/P4ADGB Bearing
This bearing excels in robotics and automation, particularly in robotic arms and CNC machines, where its P4A tolerance class delivers consistent precision. The chrome steel construction ensures durability, even in high-speed operations up to 16,250 rpm.

Medical vs Industrial: Where 71938 CD/P4ADGB Bearing Excels
In medical imaging devices, 71938 CD/P4ADGB Bearing provides reliable performance due to its low vibration and high accuracy. Meanwhile, in industrial pumps and compressors, its robust design handles heavy loads with ease, making it a versatile choice across sectors.

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