+86 15806631151 [email protected]
TFL BEARINGS
REQUEST A QUOTE
Super Precision Angular Contact Ball Bearings S71921 CD/P4A

Super Precision Angular Contact Ball Bearings S71921 CD/P4A

The S71921 CD/P4A is a super precision angular contact ball bearing with a 105mm bore and 145mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 13905 lbf and operates smoothly at speeds up to 8500 RPM.

Its sealed design keeps lubrication in place, while the phenolic cage ensures quiet and efficient performance. The bearing works reliably in temperatures ranging from -30°C to 110°C.

With a 15° contact angle and P4 tolerance class, it offers excellent precision for demanding applications. Ideal for machine tools or high-speed spindles where accuracy and durability are key.

Weighing 0.85kg, it’s robust yet manageable for its size. This model is interchangeable with SKF bearings, making it a versatile choice for replacements or upgrades.

Get A Free Quote
    Description Features Application Q&A Featured Products Our Process

Product Parameters

  • Part Number S71921 CD/P4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 105 mm
  • Bore Dia Tolerance -0.008mm to 0
  • Outer Dia 145 mm
  • Outer Dia Tolerance -0.009mm to 0
  • Width 20 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 12.7 mm
  • Ball Qty 27
  • Contact Angle 15°
  • Tolerance Class P4 (ABEC-7)
  • System of Measurement Metric
  • Seal Type Sealed
  • Matched Arrangement Available
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 13905 lbf
  • Static Radial Load 15638 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 8500 rpm
  • Weight 0.85 kg
  • Price（$） 1563.156
Super Precision Angular Contact Ball Bearings S71921 CD/P4A dimension drawing
Download DWG Download PDF

Features

Why Choose S71921 CD/P4A Bearing for Precision Tasks?

S71921 CD/P4A Bearing features a 15° contact angle, optimised for high-precision angular contact applications.
Its chrome steel rings and balls ensure durability under dynamic radial loads up to 13,905 lbf.

The phenolic cage maintains ball alignment, reducing friction and enhancing operational smoothness.
With a maximum speed of 8,500 rpm, it delivers reliable performance in demanding conditions.

S71921 CD/P4A Bearing is preloaded and sealed, offering consistent accuracy with minimal maintenance.
Its P4 tolerance class (ABEC-7) guarantees precision for critical industrial applications.

Application

Industrial Uses of S71921 CD/P4A Bearing
S71921 CD/P4A Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The sealed construction helps maintain performance in environments with dust or debris.

Where Is S71921 CD/P4A Bearing Used?
In automotive applications, S71921 CD/P4A Bearing supports wheel hubs and transmission systems, offering reliable performance under radial and axial loads. Its phenolic cage provides stability at high speeds.

Built for Heavy-Duty Use: S71921 CD/P4A Bearing
This bearing excels in robotics and automation, particularly in robotic arms requiring smooth, precise movement. The P4 tolerance class ensures minimal vibration and noise during operation.

Medical vs Industrial: Where S71921 CD/P4A Bearing Excels
For medical imaging devices, S71921 CD/P4A Bearing’s chrome steel construction ensures durability and precision. In industrial settings, it’s favoured for its ability to handle high dynamic loads.

Light-Duty vs High-Speed: Performance of S71921 CD/P4A Bearing
In light-duty applications like small motors, S71921 CD/P4A Bearing provides consistent performance. For high-speed scenarios, its lubricated design and balanced construction reduce friction and heat buildup.

Q&A

SEND INQUIRY