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Super Precision Angular Contact Ball Bearings 71938 CD/P4AQBCD

Super Precision Angular Contact Ball Bearings 71938 CD/P4AQBCD

The 71938 CD/P4AQBCD is a super precision angular contact ball bearing with a 190mm bore and 260mm outer diameter, crafted from durable chrome steel. It handles heavy radial loads up to 101025 lbf and operates smoothly at speeds up to 16250 RPM.

Its 15° contact angle and matched set of four bearings provide excellent stability under angular loads, while the phenolic cage ensures quiet performance. The open design allows for easy lubrication and maintenance.

This bearing is ideal for high-precision applications like machine tool spindles or industrial gearboxes, where accuracy and durability are key. It can withstand temperatures from -30°C to 110°C, making it versatile for various environments.

Weighing 17.4kg, it’s a robust choice for heavy-duty machinery. Compliant with P4A tolerance standards, it offers reliable performance for demanding tasks. Interchangeable with SKF bearings, it’s a practical option for replacements or upgrades.

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Product Parameters

  • Part Number 71938 CD/P4AQBCD
  • 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 132 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 4 bearings <<>> QBC
  • Number Of Bearings In Matched Set 4
  • Universal Matching Bearing No
  • Preload Heavy / Class D
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 101025 lbf
  • Static Radial Load 198000 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16250 rpm
  • Weight 17.4 kg
Super Precision Angular Contact Ball Bearings 71938 CD/P4AQBCD dimension drawing
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Features

Performance Features of 71938 CD/P4AQBCD Bearing

71938 CD/P4AQBCD Bearing is designed with a 15° contact angle, optimising load distribution for precision applications.
Its chrome steel rings and balls ensure durability under high dynamic radial loads of up to 101025 lbf.

The phenolic cage maintains ball alignment, reducing friction and enhancing operational smoothness.
With a maximum speed of 16,250 rpm, it balances high-speed performance and reliability.

71938 CD/P4AQBCD Bearing operates efficiently in temperatures ranging from -30°C to 110°C.
Its heavy preload class D design ensures stability in demanding angular contact scenarios.

The matched arrangement of four bearings provides consistent performance in complex setups.
Open seal type allows for easy lubrication, maintaining optimal functionality over time.

Precision P4A tolerance class guarantees accuracy, making it suitable for high-performance machinery.
Weighing 17.4 kg, it offers robust construction without compromising on precision.

Application

Industrial Uses of 71938 CD/P4AQBCD Bearing
71938 CD/P4AQBCD Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The heavy preload and P4A tolerance class make it suitable for applications demanding tight control over movement.

In aerospace applications, 71938 CD/P4AQBCD Bearing supports critical components like turbine shafts, thanks to its ability to handle both radial and axial loads. The phenolic cage material provides stability under high-speed conditions, reducing friction and wear.

For automation systems, 71938 CD/P4AQBCD Bearing is ideal for robotic arms requiring smooth and precise motion. Its matched arrangement of four bearings ensures consistent performance in repetitive tasks, enhancing operational reliability.

Medical imaging devices benefit from 71938 CD/P4AQBCD Bearing’s chrome steel construction, which offers durability and precision. The open seal type allows for easy lubrication, maintaining performance in demanding environments.

Q&A

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