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Super Precision Angular Contact Ball Bearings 71920 ACD/P4ATBTC

Super Precision Angular Contact Ball Bearings 71920 ACD/P4ATBTC

The 71920 ACD/P4ATBTC is a super precision angular contact ball bearing with a 100mm bore and 140mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 27900 lbf and operates smoothly at speeds up to 15000 RPM.

Its 25° contact angle and matched set of three bearings (arranged > TBT) provide stable performance under angular loads. The phenolic cage ensures quiet operation and long service life.

Preloaded for moderate stiffness (Class C), this bearing is ideal for high-precision applications like machine tool spindles or robotics. It works in temperatures from -30°C to 110°C.

Weighing 2.4kg, it meets P4A tolerance standards for exceptional accuracy. The open design allows easy relubrication, while its compatibility with SKF bearings simplifies replacements.

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Product Parameters

  • Part Number 71920 ACD/P4ATBTC
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 100 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 140 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 60 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 12.7 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 Moderate / Class C
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 27900 lbf
  • Static Radial Load 42750 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 15000 rpm
  • Weight 2.4 kg
  • Price（$） 142.749
Super Precision Angular Contact Ball Bearings 71920 ACD/P4ATBTC dimension drawing
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Features

Why Choose 71920 ACD/P4ATBTC Bearing for Precision Tasks?

71920 ACD/P4ATBTC Bearing features a 25° contact angle, ideal for handling combined radial and axial loads.
Its chrome steel rings and balls ensure durability, while the phenolic cage reduces friction and noise.

With a dynamic radial load capacity of 27900 lbf, it performs reliably in high-speed applications.
The P4A tolerance class guarantees precision, making it suitable for demanding industrial uses.

71920 ACD/P4ATBTC Bearing operates smoothly at speeds up to 15,000 rpm, maintaining stability.
Its moderate preload (Class C) ensures consistent performance without excessive wear.

The matched arrangement of three bearings (TBT) provides balanced load distribution.
This design enhances longevity and reduces the need for frequent maintenance.

Application

Key Fields for 71920 ACD/P4ATBTC Bearing
71920 ACD/P4ATBTC Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The moderate preload helps maintain stability during heavy cutting operations.

In aerospace applications, 71920 ACD/P4ATBTC Bearing supports critical components like turbine shafts, thanks to its ability to handle both radial and axial loads. The phenolic cage reduces friction, making it suitable for high-speed environments.

For robotics, 71920 ACD/P4ATBTC Bearing provides smooth motion in articulated arms and joints. Its matched arrangement of three bearings ensures consistent performance in automated systems.

Medical imaging devices benefit from 71920 ACD/P4ATBTC Bearing’s precision and reliability. The chrome steel construction ensures long-lasting performance in sensitive equipment like MRI scanners.

In automotive testing rigs, 71920 ACD/P4ATBTC Bearing’s high-speed capability and load handling make it ideal for simulating real-world conditions. The P4A tolerance class guarantees consistent results in demanding tests.

Q&A

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