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Super Precision Angular Contact Ball Bearings 71940 ACD/P4A

Super Precision Angular Contact Ball Bearings 71940 ACD/P4A

The 71940 ACD/P4A is a super precision angular contact ball bearing with a 200mm bore and 280mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 44775 lbf and operates smoothly at speeds up to 6300 RPM.

Its 25° contact angle ensures excellent performance under combined loads, while the phenolic cage offers durability and reduced friction. The bearing comes preloaded for enhanced stability in demanding applications.

Ideal for high-precision machinery like CNC spindles or grinding machines, it works reliably in temperatures from -30°C to 110°C. The P4 tolerance class guarantees exceptional accuracy for critical operations.

Weighing 6.1kg, this bearing is robust yet manageable for its size. It’s interchangeable with SKF models, making replacements straightforward. Lubrication is included for easy installation and immediate use.

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Product Parameters

  • Part Number 71940 ACD/P4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 200 mm
  • Bore Dia Tolerance -0.012mm to 0
  • Outer Dia 280 mm
  • Outer Dia Tolerance -0.013mm to 0
  • Width 38 mm
  • Width Tolerance -0.24mm to 0
  • Ball Dia 25.4 mm
  • Ball Qty 26
  • Contact Angle 25°
  • Tolerance Class P4 (ABEC-7)
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement No
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 44775 lbf
  • Static Radial Load 56250 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 6300 rpm
  • Weight 6.1 kg
  • Price（$） 1277.82
Super Precision Angular Contact Ball Bearings 71940 ACD/P4A dimension drawing
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Features

How Is 71940 ACD/P4A Bearing Engineered for Reliability?

71940 ACD/P4A Bearing features a 25° contact angle, optimised for handling combined radial and axial loads.
The chrome steel rings and balls ensure high strength and durability under heavy loads.

With a dynamic radial load capacity of 44775 lbf, it performs reliably in demanding applications.
The phenolic cage maintains ball alignment, reducing friction and wear.

71940 ACD/P4A Bearing operates smoothly at speeds up to 6,300 rpm.
Its precision P4 tolerance class ensures consistent performance in high-accuracy applications.

The open design allows for easy lubrication, enhancing longevity.
It functions efficiently within a temperature range of -30° to 110°C.

Application

Industrial Uses of 71940 ACD/P4A Bearing
71940 ACD/P4A Bearing is commonly used in high-precision machine tools, where its 25° contact angle ensures accurate radial and axial load handling. The open design and phenolic cage make it suitable for applications requiring minimal friction and heat generation.

In robotics, 71940 ACD/P4A Bearing supports articulated arms and joints, providing smooth movement under varying loads. Its P4 tolerance class ensures consistent performance in automated systems.

For aerospace components, 71940 ACD/P4A Bearing’s chrome steel construction offers durability in demanding environments. The lubricated design helps maintain performance at high speeds, making it ideal for aircraft systems.

Where to Use 71940 ACD/P4A Bearing
71940 ACD/P4A Bearing fits well in medical imaging devices, where precision and reliability are critical. The phenolic cage reduces vibration, enhancing image quality in scanners and diagnostic equipment.

In industrial pumps, 71940 ACD/P4A Bearing handles both radial and axial loads efficiently. Its high dynamic load capacity ensures long service life even in continuous operation scenarios.

Q&A

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