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Super Precision Angular Contact Ball Bearings 71909 CD/P4ATBTC

Super Precision Angular Contact Ball Bearings 71909 CD/P4ATBTC

The 71909 CD/P4ATBTC is a super precision angular contact ball bearing with a 45mm bore and 68mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 6322 lbf and operates smoothly at speeds up to 41,000 RPM.

With a 15° contact angle and moderate preload, it offers excellent stability for high-precision applications. The phenolic cage ensures quiet operation and long service life.

This set includes three matched bearings arranged in a TBT configuration, ideal for spindle or machine tool use. It works reliably in temperatures from -30°C to 110°C.

Weighing 0.39kg, it’s a robust yet lightweight choice for demanding environments. Compliant with P4A tolerance standards for exceptional accuracy.

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Product Parameters

  • Part Number 71909 CD/P4ATBTC
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 45 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 68 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 36 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 6.35 mm
  • Ball Qty 23
  • Contact Angle 15°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 3 bearings <>> TBT
  • Number Of Bearings In Matched Set 3
  • Universal Matching Bearing No
  • Preload Moderate / Class C
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 6322 lbf
  • Static Radial Load 6412 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 41000 rpm
  • Weight 0.39 kg
Super Precision Angular Contact Ball Bearings 71909 CD/P4ATBTC dimension drawing
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Features

Performance Features of 71909 CD/P4ATBTC Bearing

71909 CD/P4ATBTC Bearing is designed with a 15° contact angle, optimising load distribution for precision applications.
Its chrome steel construction ensures durability and resistance to wear under dynamic radial loads up to 6322 lbf.

The phenolic cage maintains ball alignment, reducing friction and enhancing operational smoothness.
With a maximum speed of 41,000 rpm, it delivers reliable performance in high-speed scenarios.

71909 CD/P4ATBTC Bearing operates efficiently in temperatures ranging from -30°C to 110°C.
Its moderate preload (Class C) ensures stable performance in angular contact load conditions.

The matched arrangement of three bearings (> TBT) provides balanced load handling.
Open seal design allows for easy lubrication, maintaining optimal performance over time.

Application

Common Applications of 71909 CD/P4ATBTC Bearing
This bearing is widely used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The moderate preload also helps maintain stability during heavy cutting operations.

In robotics, 71909 CD/P4ATBTC Bearing supports articulated arms that require smooth, precise movement. Its phenolic cage reduces friction, making it ideal for repetitive tasks in automated systems.

For aerospace applications, this bearing’s P4A tolerance class provides the reliability needed in flight control systems. The chrome steel construction handles both radial and axial loads efficiently.

Medical imaging devices benefit from 71909 CD/P4ATBTC Bearing’s low vibration and high-speed capabilities. Its matched arrangement ensures consistent performance in critical diagnostic equipment.

In electric vehicle motors, this bearing’s lubricated design reduces wear during high-speed operation. The 15° contact angle optimises load distribution for longer service life.

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