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Super Precision Angular Contact Ball Bearings S71909 ACD/P4AQBCA

Super Precision Angular Contact Ball Bearings S71909 ACD/P4AQBCA

The S71909 ACD/P4AQBCA is a super precision angular contact ball bearing with a 45mm bore and 68mm outer diameter, crafted from high-quality chrome steel. It features a 25° contact angle and comes sealed for protection, with a matched set of four bearings for balanced performance.

This bearing handles radial loads up to 7312 lbf and operates smoothly at speeds up to 41,000 RPM. Its phenolic cage and grease lubrication ensure quiet, long-lasting use in temperatures from -30°C to 110°C.

The extra-light preload (Class A) and P4A tolerance class make it ideal for high-precision applications like machine tool spindles or high-speed robotics. Its matched arrangement ensures consistent performance across all four bearings.

Weighing 0.54kg, it’s a robust yet manageable solution for demanding environments. Interchangeable with SKF bearings, it offers a reliable option for replacements or upgrades.

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Product Parameters

  • Part Number S71909 ACD/P4AQBCA
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 45 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 68 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 48 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 6.35 mm
  • Ball Qty 23
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Sealed
  • Matched Arrangement 4 bearings <<>> QBC
  • Number Of Bearings In Matched Set 4
  • 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 7312 lbf
  • Static Radial Load 8100 lbf
  • Lubrication Grease
  • Temperature Range - 30°C to 110 °C
  • Max Speed 41000 rpm
  • Weight 0.54 kg
Super Precision Angular Contact Ball Bearings S71909 ACD/P4AQBCA dimension drawing
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Features

How Does S71909 ACD/P4AQBCA Bearing Achieve Super Precision?

S71909 ACD/P4AQBCA Bearing features a 25° contact angle, optimised for high-precision angular contact applications.
The matched arrangement of four bearings ensures consistent performance and load distribution.

With a dynamic radial load capacity of 7312 lbf, S71909 ACD/P4AQBCA Bearing handles demanding tasks reliably.
Its phenolic cage maintains ball alignment, reducing friction and wear.

S71909 ACD/P4AQBCA Bearing operates smoothly at speeds up to 41,000 rpm, thanks to its precision-engineered design.
The sealed construction and grease lubrication minimise maintenance needs.

Designed for temperatures from -30°C to 110°C, S71909 ACD/P4AQBCA Bearing performs well in varied conditions.
Its chrome steel rings and balls provide durability and resistance to wear.

The P4A tolerance class ensures exceptional accuracy, making S71909 ACD/P4AQBCA Bearing ideal for precision machinery.
Its extra-light preload enhances performance in high-speed applications.

Application

Common Applications of S71909 ACD/P4AQBCA Bearing
S71909 ACD/P4AQBCA Bearing is widely used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The sealed construction keeps contaminants out, making it reliable for long-term use.

In robotics, S71909 ACD/P4AQBCA Bearing supports articulated arms, providing smooth movement and low friction. Its phenolic cage reduces weight while maintaining strength, ideal for repetitive motions.

For aerospace applications, S71909 ACD/P4AQBCA Bearing handles both radial and axial loads in components like landing gear systems. The P4A tolerance class guarantees consistent performance under demanding conditions.

Where Is S71909 ACD/P4AQBCA Bearing Used?
S71909 ACD/P4AQBCA Bearing is a go-to choice for CNC machining centres, thanks to its extra-light preload and high-speed capability. The matched set arrangement ensures balanced load distribution.

In medical imaging devices, S71909 ACD/P4AQBCA Bearing offers quiet operation and precision, critical for diagnostic accuracy. The grease lubrication extends service life, reducing maintenance needs.

Built for Heavy-Duty Use: S71909 ACD/P4AQBCA Bearing
S71909 ACD/P4AQBCA Bearing excels in industrial pumps, where its chrome steel rings withstand harsh fluids and pressures. The 25° contact angle optimises load handling.

For electric vehicle motors, S71909 ACD/P4AQBCA Bearing reduces energy loss with its low-friction design. The metric dimensions ensure easy integration into European and Asian automotive systems.

Automotive vs Aerospace: Applications of S71909 ACD/P4AQBCA Bearing
In automotive transmissions, S71909 ACD/P4AQBCA Bearing manages high-speed rotations with minimal heat generation. The sealed design prevents grease leakage in compact spaces.

For aircraft hydraulic systems, S71909 ACD/P4AQBCA Bearing maintains performance across temperature extremes. Its phenolic cage resists corrosion, a key feature in aviation environments.

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