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Super Precision Angular Contact Ball Bearings 71930 ACD/P4ATBTA

Super Precision Angular Contact Ball Bearings 71930 ACD/P4ATBTA

The 71930 ACD/P4ATBTA is a super precision angular contact ball bearing with a 150mm bore and 210mm outer diameter, crafted from high-quality chrome steel. It measures 150mm×210mm×84mm, offering a compact yet robust design for precision applications.

This bearing handles radial loads up to 52650 lbf and operates smoothly at speeds up to 11000 RPM. Its 25° contact angle ensures efficient load distribution, while the phenolic cage enhances durability.

The open design allows for easy lubrication, and the extra light preload (Class A) ensures minimal friction. It comes in a matched set of three bearings (TBT arrangement), ideal for high-precision setups.

Suitable for machine tools or spindle applications where accuracy is key. Compliant with P4A tolerance standards, it performs reliably in temperatures from -30°C to 110°C. Weighing 7.5kg, it’s sturdy yet manageable for its size.

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Product Parameters

  • Part Number 71930 ACD/P4ATBTA
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 150 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 210 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 84 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 19.05 mm
  • Ball Qty 23
  • 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 52650 lbf
  • Static Radial Load 84375 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 7.5 kg
  • Price（$） 1679.292
Super Precision Angular Contact Ball Bearings 71930 ACD/P4ATBTA dimension drawing
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Features

Performance Features of 71930 ACD/P4ATBTA Bearing

71930 ACD/P4ATBTA Bearing is designed with a 25° contact angle, optimising load distribution for precision applications.
Its chrome steel rings and balls ensure durability under high radial loads up to 52,650 lbf.

The phenolic cage maintains ball alignment, reducing friction and enhancing smooth operation.
With a maximum speed of 11,000 rpm, it delivers reliable performance in high-speed scenarios.

71930 ACD/P4ATBTA Bearing operates efficiently within a temperature range of -30°C to 110°C.
Its extra light preload (Class A) ensures minimal resistance, ideal for precision machinery.

The matched arrangement of three bearings (> TBT) provides stability in demanding setups.
This design reduces vibration, making it suitable for applications requiring high accuracy.

Lubrication is pre-applied, ensuring ready-to-use convenience without immediate maintenance.
The P4A tolerance class guarantees consistent performance in precision engineering tasks.

Application

Industrial Uses of 71930 ACD/P4ATBTA Bearing
71930 ACD/P4ATBTA Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate alignment under radial and axial loads. The phenolic cage reduces friction, making it suitable for high-speed operations.

In automotive applications, 71930 ACD/P4ATBTA Bearing supports components like wheel hubs and transmissions, providing stability under heavy loads. Its extra-light preload enhances performance in demanding driving conditions.

For medical imaging devices, 71930 ACD/P4ATBTA Bearing’s chrome steel construction offers reliability and longevity. The P4A tolerance class ensures consistent precision in critical diagnostic equipment.

Automation systems benefit from 71930 ACD/P4ATBTA Bearing’s matched arrangement, which reduces vibration in robotic arms. The open seal design allows for easy lubrication, extending service life in continuous operation.

In consumer electronics, 71930 ACD/P4ATBTA Bearing is found in high-end printers, where its low noise and smooth rotation improve print quality. The metric sizing ensures compatibility with various international models.

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