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Super Precision Angular Contact Ball Bearings 71940 ACD/P4AH1

Super Precision Angular Contact Ball Bearings 71940 ACD/P4AH1

The 71940 ACD/P4AH1 is a super precision angular contact ball bearing with a 200mm bore and 280mm outer diameter, crafted from high-quality chrome steel. Its 25° contact angle efficiently manages both radial and axial loads, making it versatile for demanding applications.

With a dynamic radial load capacity of 44775 lbf, it handles heavy-duty operations smoothly. The phenolic cage ensures durability, while the open design allows for easy lubrication and maintenance. It operates well in temperatures ranging from -30°C to 110°C.

This bearing is part of a matched set of two, though it doesn’t support universal matching. Its P4A tolerance class guarantees high precision, ideal for applications like machine tools or high-speed spindles.

Weighing 6.1kg, it’s robust yet manageable for its size. Compatible with SKF bearings, it’s a reliable choice for replacements or upgrades in precision machinery.

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Product Parameters

  • Part Number 71940 ACD/P4AH1
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 200 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 280 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 38 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 25.4 mm
  • Ball Qty 26
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement No
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing 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°C to 110 °C
  • Max Speed 6300 rpm
  • Weight 6.1 kg
Super Precision Angular Contact Ball Bearings 71940 ACD/P4AH1 dimension drawing
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Features

Performance Features of 71940 ACD/P4AH1 Bearing

71940 ACD/P4AH1 Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.

Its chrome steel rings and balls provide high resistance to wear, ensuring consistent performance.

The phenolic cage maintains ball alignment, reducing friction and noise during operation.

With a dynamic radial load capacity of 44775 lbf, it handles demanding conditions effectively.

How Is 71940 ACD/P4AH1 Bearing Engineered for Reliability?

71940 ACD/P4AH1 Bearing features precise tolerances, with bore and outer diameter tolerances as tight as -0.004mm to 0.

This precision ensures smooth rotation and minimal vibration in high-speed applications.

The bearing’s preload availability enhances rigidity, making it suitable for precision machinery.

Its maximum speed of 6,300 rpm balances performance and durability.

Tailored for Corrosion Resistance: 71940 ACD/P4AH1 Bearing

71940 ACD/P4AH1 Bearing’s chrome steel construction resists corrosion, even in challenging environments.

The lubricated design reduces friction, extending the bearing’s service life.

With a temperature range of -30°C to 110°C, it performs reliably in varied conditions.

The static radial load capacity of 56250 lbf ensures stability under heavy loads.

Steel vs Ceramic Bearings: Strengths of 71940 ACD/P4AH1 Bearing

71940 ACD/P4AH1 Bearing uses chrome steel for both rings and balls, offering a balance of strength and affordability.

The phenolic cage provides lightweight durability, reducing centrifugal forces at high speeds.

With 26 balls of 25.4 mm diameter, it ensures even load distribution and smooth operation.

The P4A tolerance class guarantees high precision for critical applications.

Application

Industrial Uses of 71940 ACD/P4AH1 Bearing
71940 ACD/P4AH1 Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The open seal type allows for efficient lubrication, extending its service life in demanding conditions.

Where Is 71940 ACD/P4AH1 Bearing Used?
In automotive applications, 71940 ACD/P4AH1 Bearing supports high-speed components like turbochargers and transmission systems. Its phenolic cage material reduces friction, making it suitable for continuous operation.

Perfect Fit for Automation: 71940 ACD/P4AH1 Bearing
71940 ACD/P4AH1 Bearing works well in robotic arms, providing smooth movement due to its precise P4A tolerance class. The chrome steel construction ensures durability in repetitive motion scenarios.

Medical vs Industrial: Where 71940 ACD/P4AH1 Bearing Excels
For medical imaging devices, 71940 ACD/P4AH1 Bearing offers reliable performance with minimal vibration. In industrial settings, its high dynamic radial load capacity makes it ideal for heavy machinery.

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