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Super Precision Angular Contact Ball Bearings S71928 ACDGA/P4A

Super Precision Angular Contact Ball Bearings S71928 ACDGA/P4A

The S71928 ACDGA/P4A is a super precision angular contact ball bearing with a 140mm bore and 190mm outer diameter, crafted from durable chrome steel. It features a 25° contact angle and sealed design for reliable performance.

This bearing handles radial loads up to 20340 lbf and can spin at speeds up to 11000 RPM. Its phenolic cage and grease lubrication ensure smooth operation in temperatures from -30°C to 110°C.

The P4A tolerance class offers high precision, while the extra light preload reduces friction. It’s suitable for universal matching in back-to-back, face-to-face, or tandem arrangements.

Ideal for precision machinery like spindles or high-speed applications where accuracy is crucial. Weighing 1.69kg, it balances strength with manageable size. Interchangeable with SKF bearings for easy replacement.

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Product Parameters

  • Part Number S71928 ACDGA/P4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 140 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 190 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 24 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 15.875 mm
  • Ball Qty 29
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Sealed
  • Matched Arrangement No
  • Number Of Bearings In Matched Set 3
  • Universal Matching Bearing Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
  • Preload Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 20340 lbf
  • Static Radial Load 24750 lbf
  • Lubrication Grease
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 1.69 kg
Super Precision Angular Contact Ball Bearings S71928 ACDGA/P4A dimension drawing
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Features

Performance Features of S71928 ACDGA/P4A Bearing

S71928 ACDGA/P4A Bearing is crafted with chrome steel rings and balls, offering high precision and durability.
Its 25° contact angle ensures efficient handling of combined radial and axial loads.
The phenolic cage maintains ball alignment, reducing friction and enhancing performance.
With a dynamic radial load capacity of 20340 lbf, it excels in demanding applications.
The sealed design and grease lubrication provide reliable operation in various conditions.
Its P4A tolerance class guarantees exceptional accuracy for precision tasks.
The bearing can reach speeds up to 11,000 rpm, balancing speed and reliability.
Suitable for temperatures from -30°C to 110°C, it performs well in diverse environments.
The universal matching option allows flexible arrangement in back-to-back, face-to-face, or tandem configurations.
Weighing 1.69 kg, it is robust yet manageable for installation.

Application

Super Precision Angular Contact Ball Bearings S71928 ACDGA/P4A is commonly used in high-speed machine tools, where its 25° contact angle ensures smooth operation under radial and axial loads. The sealed design helps keep contaminants out, extending the bearing’s lifespan in demanding environments.

In automotive applications, S71928 ACDGA/P4A is ideal for electric vehicle motors, providing reliable performance at high rotational speeds. Its extra light preload ensures minimal friction, contributing to energy efficiency.

For robotics and automation, S71928 ACDGA/P4A offers precise movement in robotic arms and CNC machines. The phenolic cage material reduces weight while maintaining durability, making it suitable for repetitive, high-precision tasks.

Medical imaging devices benefit from S71928 ACDGA/P4A’s low noise and vibration characteristics. The P4A tolerance class ensures consistent performance in sensitive equipment like MRI scanners.

In aerospace applications, S71928 ACDGA/P4A handles both radial and thrust loads in aircraft components. Its grease lubrication and wide temperature range make it adaptable to various flight conditions.

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