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Super Precision Angular Contact Ball Bearings 71918 ACD/P4ATBTA

Super Precision Angular Contact Ball Bearings 71918 ACD/P4ATBTA

The 71918 ACD/P4ATBTA is a super precision angular contact ball bearing with a 90mm bore and 125mm outer diameter, designed for high-speed applications. It’s made from durable chrome steel and features a phenolic cage for smooth operation.

With a 25° contact angle and extra light preload, it handles radial loads up to 21510 lbf and spins at speeds up to 15000 RPM. The open design allows for easy lubrication and maintenance.

This bearing comes in a matched set of three, arranged in a TBT configuration for enhanced stability. It’s ideal for precision machinery like spindles or CNC equipment where accuracy is key.

Weighing 1.65kg, it operates smoothly in temperatures from -30°C to 110°C. Compliant with P4A tolerance standards, it’s a reliable choice for demanding industrial applications.

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Product Parameters

  • Part Number 71918 ACD/P4ATBTA
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 90 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 125 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 54 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 11.112 mm
  • Ball Qty 26
  • Contact Angle 25°
  • 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 21510 lbf
  • Static Radial Load 32175 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 15000 rpm
  • Weight 1.65 kg
  • Price（$） 738.252
Super Precision Angular Contact Ball Bearings 71918 ACD/P4ATBTA dimension drawing
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Features

Performance Features of 71918 ACD/P4ATBTA Bearing

71918 ACD/P4ATBTA Bearing is designed with a 25° contact angle, optimising load distribution for precision applications.
Its chrome steel rings and balls enhance durability, supporting dynamic radial loads up to 21510 lbf.

The phenolic cage ensures smooth operation at high speeds, reaching up to 15,000 rpm.
With a matched arrangement of three bearings, it provides extra stability in demanding setups.

71918 ACD/P4ATBTA Bearing operates efficiently in temperatures from -30°C to 110°C.
Its extra light preload reduces friction, making it ideal for high-precision machinery.

The open seal design allows for easy lubrication, maintaining performance over time.
Its tight tolerances (P4A class) ensure reliable and consistent operation.

Application

Industrial Uses of 71918 ACD/P4ATBTA Bearing
71918 ACD/P4ATBTA Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The matched arrangement of three bearings provides enhanced stability for demanding industrial applications.

Where Is 71918 ACD/P4ATBTA Bearing Used?
You’ll find 71918 ACD/P4ATBTA Bearing in automotive transmissions, where its extra light preload reduces friction and improves efficiency. The phenolic cage material also helps withstand high temperatures and speeds.

Optimized for Performance: 71918 ACD/P4ATBTA Bearing
71918 ACD/P4ATBTA Bearing excels in robotics, particularly in articulated arms requiring smooth, precise movement. Its P4A tolerance class ensures consistent performance in automated systems.

Medical vs Industrial: Where 71918 ACD/P4ATBTA Bearing Excels
In medical imaging devices, 71918 ACD/P4ATBTA Bearing offers reliable operation due to its chrome steel construction. For industrial pumps, its dynamic radial load capacity makes it a durable choice.

Practical Applications of 71918 ACD/P4ATBTA Bearing
71918 ACD/P4ATBTA Bearing is ideal for aerospace applications, such as helicopter rotor systems, where precision and reliability are critical. The lubricated design ensures long service life even under continuous use.

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