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Super Precision Angular Contact Ball Bearings 71930 ACD/P4ADBC

Super Precision Angular Contact Ball Bearings 71930 ACD/P4ADBC

The 71930 ACD/P4ADBC is a super precision angular contact ball bearing with a 150mm bore and 210mm outer diameter, crafted from high-grade chrome steel. It measures 150mm×210mm×56mm, offering a compact yet robust design for demanding applications.

This bearing handles radial loads up to 40050 lbf and operates smoothly at speeds up to 11000 RPM. Its 25° contact angle and moderate preload ensure stable performance under angular loads.

The open design allows for easy lubrication, while the phenolic cage enhances durability. It comes as a matched set of two bearings (DB arrangement), ideal for high-precision setups.

Suitable for machine tools or spindle applications where accuracy is key. Compliant with P4A tolerance standards, it’s interchangeable with SKF bearings for seamless replacements. Weighs 5kg, making it sturdy yet manageable.

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Product Parameters

  • Part Number 71930 ACD/P4ADBC
  • 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 56 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 2 bearings <> DB
  • Number Of Bearings In Matched Set 2
  • 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 40050 lbf
  • Static Radial Load 56250 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 5 kg
Super Precision Angular Contact Ball Bearings 71930 ACD/P4ADBC dimension drawing
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Features

Performance Features of 71930 ACD/P4ADBC Bearing

71930 ACD/P4ADBC Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
The chrome steel rings and balls enhance durability, supporting dynamic radial loads up to 40050 lbf.

Its phenolic cage maintains ball alignment, reducing friction and extending operational life.
With a maximum speed of 11,000 rpm, it delivers reliable performance in high-speed scenarios.

The matched arrangement of two bearings ensures stability and precision in demanding setups.
Moderate preload (Class C) further enhances its smooth operation and load-handling capability.

Operating within a temperature range of -30°C to 110°C, it adapts well to varied environments.
Its P4A tolerance class guarantees high precision, making it suitable for critical applications.

Application

Industrial Uses of 71930 ACD/P4ADBC Bearing
71930 ACD/P4ADBC 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, 71930 ACD/P4ADBC Bearing supports critical components like turbine shafts, thanks to its chrome steel construction and high-speed capability. The matched arrangement further enhances load distribution in demanding conditions.

For robotics, 71930 ACD/P4ADBC Bearing provides smooth motion in articulated arms, with its phenolic cage reducing friction. The P4A tolerance class ensures consistent performance in automated systems.

Where Is 71930 ACD/P4ADBC Bearing Used?
You’ll often find 71930 ACD/P4ADBC Bearing in medical imaging devices, where its precision and reliability are essential for clear scans. The open design allows for easy lubrication, extending service life.

In automotive testing equipment, 71930 ACD/P4ADBC Bearing handles high radial loads while maintaining accuracy. Its temperature range makes it suitable for both cold and warm environments.

Built for Heavy-Duty Use: 71930 ACD/P4ADBC Bearing
71930 ACD/P4ADBC Bearing excels in industrial pumps, where its dynamic radial load capacity ensures long-term reliability. The phenolic cage also resists corrosion in wet conditions.

For wind turbine gearboxes, 71930 ACD/P4ADBC Bearing’s matched set design helps manage uneven loads. Its high-speed rating is ideal for renewable energy applications.

Automotive vs Aerospace: Applications of 71930 ACD/P4ADBC Bearing
In automotive transmissions, 71930 ACD/P4ADBC Bearing supports smooth gear shifts with its angular contact design. The chrome steel rings withstand constant stress.

For aerospace actuators, 71930 ACD/P4ADBC Bearing’s precision ensures reliable control surfaces. The P4A tolerance class meets strict aviation standards.

Q&A

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