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Super Precision Angular Contact Ball Bearings 71956 CD/P4ATBTA

Super Precision Angular Contact Ball Bearings 71956 CD/P4ATBTA

The 71956 CD/P4ATBTA is a super precision angular contact ball bearing with a 280mm bore and 380mm outer diameter, crafted from high-grade chrome steel. Its compact design measures 280mm by 380mm by 138mm, making it suitable for tight spaces.

This bearing handles radial loads up to 140400 lbf and operates smoothly at speeds up to 7500 RPM. The 15° contact angle ensures efficient load distribution, while the phenolic cage enhances durability.

Its open design allows for easy lubrication, and it performs reliably in temperatures from -30°C to 110°C. The matched set of three bearings (arranged > TBT) ensures balanced performance.

Ideal for high-precision applications like machine tool spindles or industrial gearboxes. Weighing 38.7kg, it’s robust yet designed for precision. Compliant with P4A tolerance standards for accurate performance.

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Product Parameters

  • Part Number 71956 CD/P4ATBTA
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 280 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 380 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 138 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 30.162 mm
  • Ball Qty 31
  • 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 Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 140400 lbf
  • Static Radial Load 308250 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 7500 rpm
  • Weight 38.7 kg
Super Precision Angular Contact Ball Bearings 71956 CD/P4ATBTA dimension drawing
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Features

Performance Features of 71956 CD/P4ATBTA Bearing

71956 CD/P4ATBTA Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls ensure durability under high dynamic radial loads of up to 140,400 lbf.

The phenolic cage maintains ball alignment, reducing friction and enhancing smooth operation.
With a maximum speed of 7,500 rpm, it balances performance and efficiency in precision tasks.

71956 CD/P4ATBTA Bearing operates in temperatures from -30°C to 110°C, suitable for varied environments.
Its extra light preload (Class A) ensures minimal resistance, ideal for high-precision machinery.

The matched arrangement of three bearings (TBT) provides stability and consistent performance.
Its P4A tolerance class guarantees tight dimensional accuracy for demanding applications.

Application

Industrial Uses of 71956 CD/P4ATBTA Bearing
71956 CD/P4ATBTA Bearing is commonly used in high-precision machine tools, where its angular contact design handles both radial and axial loads efficiently. The matched set of three bearings ensures stability in demanding applications like CNC spindles.

In aerospace components, 71956 CD/P4ATBTA Bearing’s phenolic cage and chrome steel construction provide reliable performance under extreme conditions. Its extra-light preload makes it suitable for turbine engines and flight control systems.

For automation systems, 71956 CD/P4ATBTA Bearing supports robotic arms and precision actuators with smooth, low-friction rotation. The P4A tolerance class guarantees consistent accuracy in high-speed operations.

Medical imaging devices benefit from 71956 CD/P4ATBTA Bearing’s quiet operation and durability. Its lubricated design ensures long service life in sensitive equipment like MRI scanners.

In heavy industrial gearboxes, 71956 CD/P4ATBTA Bearing’s large bore and dynamic load capacity handle significant power transmission. The open seal allows for easy relubrication in harsh environments.

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