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Super Precision Angular Contact Ball Bearings 71956 ACD/P4AQBCC

Super Precision Angular Contact Ball Bearings 71956 ACD/P4AQBCC

The 71956 ACD/P4AQBCC is a super precision angular contact ball bearing with a 280mm bore and 380mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 163800 lbf and operates smoothly at speeds up to 7500 RPM.

Its 25° contact angle and matched arrangement of four bearings ensure stable performance under angular loads. The phenolic cage offers durability and reduces friction, while the open design allows for easy lubrication.

This bearing is ideal for high-precision applications like machine tool spindles or industrial gearboxes. With a temperature range of -30°C to 110°C, it performs reliably in various environments.

Weighing 51.6kg, it’s a robust choice for heavy-duty machinery. Compliant with P4A tolerance standards, it’s interchangeable with SKF bearings for convenient replacements.

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Product Parameters

  • Part Number 71956 ACD/P4AQBCC
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 280 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 380 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 184 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 30.162 mm
  • Ball Qty 31
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 4 bearings <<>> QBC
  • Number Of Bearings In Matched Set 4
  • 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 163800 lbf
  • Static Radial Load 389250 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 7500 rpm
  • Weight 51.6 kg
Super Precision Angular Contact Ball Bearings 71956 ACD/P4AQBCC dimension drawing
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Features

Performance Features of 71956 ACD/P4AQBCC Bearing

71956 ACD/P4AQBCC Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
The chrome steel rings and balls ensure durability under high radial loads, up to 163,800 lbf.

Its phenolic cage maintains ball alignment, reducing friction and enhancing smooth operation.
With a maximum speed of 7,500 rpm, it balances performance and efficiency in precision tasks.

The matched arrangement of four bearings provides stability, ideal for demanding industrial uses.
Moderate preload (Class C) ensures consistent performance without excessive wear.

71956 ACD/P4AQBCC Bearing operates reliably in temperatures from -30°C to 110°C.
Its open design simplifies lubrication, extending maintenance intervals.

Application

Industrial Uses of 71956 ACD/P4AQBCC Bearing
71956 ACD/P4AQBCC Bearing is commonly used in high-precision machine tools, where its moderate preload and angular contact design ensure accurate performance. The phenolic cage helps reduce friction, making it suitable for continuous operation.

Where Is 71956 ACD/P4AQBCC Bearing Used?
You’ll often find 71956 ACD/P4AQBCC Bearing in aerospace applications, such as helicopter rotor systems, due to its ability to handle dynamic radial loads. Its P4A tolerance class ensures reliability in demanding conditions.

Built for Heavy-Duty Use: 71956 ACD/P4AQBCC Bearing
71956 ACD/P4AQBCC Bearing excels in large industrial gearboxes, where its chrome steel construction provides long-lasting durability. The matched arrangement of four bearings offers stability under heavy loads.

Automotive vs Aerospace: Applications of 71956 ACD/P4AQBCC Bearing
In automotive systems, 71956 ACD/P4AQBCC Bearing supports high-performance transmissions, while in aerospace, it’s trusted for critical rotor assemblies. Its wide temperature range makes it versatile for different environments.

Perfect Fit for Automation: 71956 ACD/P4AQBCC Bearing
71956 ACD/P4AQBCC Bearing is ideal for robotic arms in automated production lines, thanks to its precise angular contact and smooth operation. The lubricated design ensures minimal maintenance over time.

Q&A

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