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Super Precision Angular Contact Ball Bearings 71936 ACD/P4ATBTA

Super Precision Angular Contact Ball Bearings 71936 ACD/P4ATBTA

The 71936 ACD/P4ATBTA is a super precision angular contact ball bearing with a 180mm bore and 250mm outer diameter, crafted from high-grade chrome steel. It handles radial loads up to 77625 lbf and operates smoothly at speeds up to 16250 RPM.

Its 25° contact angle and matched set of three bearings (arranged TBT) provide excellent stability under angular loads. The phenolic cage ensures quiet, efficient performance.

Designed for extra light preload (Class A), this bearing is ideal for high-precision applications like machine tool spindles or aerospace systems. It works in temperatures from -30°C to 110°C.

Weighing 12.6kg, it’s robust yet precision-engineered for demanding environments. Compliant with P4A tolerance standards, it’s interchangeable with SKF bearings for easy replacement.

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Product Parameters

  • Part Number 71936 ACD/P4ATBTA
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 180 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 250 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 99 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 22.225 mm
  • Ball Qty 27
  • 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 77625 lbf
  • Static Radial Load 135000 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16250 rpm
  • Weight 12.6 kg
Super Precision Angular Contact Ball Bearings 71936 ACD/P4ATBTA dimension drawing
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Features

Performance Features of 71936 ACD/P4ATBTA Bearing

71936 ACD/P4ATBTA Bearing is designed with a 25° contact angle, ideal for handling combined radial and axial loads.

The chrome steel rings and balls ensure durability, while the phenolic cage reduces friction and wear.

With a dynamic radial load capacity of 77,625 lbf, it performs reliably in high-demand applications.

Its extra light preload (Class A) ensures smooth operation at speeds up to 16,250 rpm.

How Is 71936 ACD/P4ATBTA Bearing Engineered for Reliability?

71936 ACD/P4ATBTA Bearing features a matched arrangement of three bearings (TBT), enhancing stability and load distribution.

The P4A tolerance class guarantees precision, making it suitable for high-accuracy machinery.

Its open design allows for easy lubrication, maintaining performance in temperatures from -30°C to 110°C.

The 27 chrome steel balls, each 22.225 mm in diameter, ensure consistent load handling.

Built for Precision: 71936 ACD/P4ATBTA Bearing

71936 ACD/P4ATBTA Bearing’s phenolic cage minimises friction, contributing to its quiet and efficient operation.

The bearing’s static radial load capacity of 135,000 lbf makes it robust for heavy-duty applications.

Its metric dimensions (180 mm×250 mm×99 mm) and tight tolerances ensure a perfect fit in precision systems.

The lubricated design reduces maintenance needs, extending its service life.

Steel vs Ceramic Bearings: Strengths of 71936 ACD/P4ATBTA Bearing

71936 ACD/P4ATBTA Bearing uses chrome steel for both rings and balls, offering a balance of strength and cost-effectiveness.

Unlike ceramic bearings, it provides excellent load capacity (77,625 lbf dynamic radial) without compromising on durability.

The phenolic cage adds resilience, making it suitable for high-speed applications up to 16,250 rpm.

Its temperature range (-30°C to 110°C) ensures reliable performance in varied environments.

Application

Key Fields for 71936 ACD/P4ATBTA Bearing
71936 ACD/P4ATBTA Bearing is widely used in high-precision machine tools, where its 25° contact angle ensures accurate radial and axial load distribution. The matched arrangement of three bearings provides enhanced stability for demanding operations.

In aerospace applications, 71936 ACD/P4ATBTA Bearing supports critical components like turbine shafts, thanks to its extra light preload and high-speed capability. The phenolic cage offers excellent heat resistance, making it suitable for extreme conditions.

For robotics, 71936 ACD/P4ATBTA Bearing’s P4A tolerance class ensures smooth motion in articulated arms and precision gears. Its chrome steel construction balances durability with the lightweight needs of automated systems.

Medical imaging devices benefit from 71936 ACD/P4ATBTA Bearing’s low vibration and consistent performance. The open design allows for easy lubrication, maintaining reliability in sensitive diagnostic equipment.

In industrial pumps, 71936 ACD/P4ATBTA Bearing handles high radial loads while maintaining alignment. The metric dimensions make it a versatile choice for European and Asian machinery standards.

Q&A

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