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Super Precision Angular Contact Ball Bearings S71920 ACDGA/HCP4A

Super Precision Angular Contact Ball Bearings S71920 ACDGA/HCP4A

The S71920 ACDGA/HCP4A is a super precision angular contact ball bearing, measuring 100mm by 140mm by 20mm. Made from chrome steel with ceramic balls, it offers high accuracy and smooth operation.

With a 25° contact angle, it handles radial loads up to 12870 lbf and spins at speeds up to 16250 RPM. The sealed design keeps grease in and contaminants out, ensuring long service life.

Its phenolic cage reduces friction, while the P4A tolerance class guarantees precise performance. Ideal for high-speed applications like machine tool spindles or precision instruments.

Weighing 0.68kg, it’s part of a universal matching set, allowing flexible arrangements like back-to-back or face-to-face mounting. Works in temperatures from -30°C to 110°C.

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Product Parameters

  • Part Number S71920 ACDGA/HCP4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 100 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 140 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 20 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 12.7 mm
  • Ball Qty 26
  • 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 Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 12870 lbf
  • Static Radial Load 14175 lbf
  • Lubrication Grease
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16250 rpm
  • Weight 0.68 kg
  • Price（$） 42.579
Super Precision Angular Contact Ball Bearings S71920 ACDGA/HCP4A dimension drawing
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Features

Performance Features of S71920 ACDGA/HCP4A Bearing

S71920 ACDGA/HCP4A Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.

The ceramic balls and chrome steel rings enhance durability, supporting dynamic radial loads up to 12870 lbf.

With a maximum speed of 16,250 rpm, it ensures smooth operation in high-speed scenarios.

Its phenolic cage maintains ball alignment, reducing friction and extending service life.

Application

Super Precision Angular Contact Ball Bearings S71920 ACDGA/HCP4A are commonly used in high-speed machine tools, where their ceramic balls and phenolic cage reduce friction and heat buildup. The sealed design helps keep contaminants out, ensuring long-lasting performance.

In aerospace applications, S71920 ACDGA/HCP4A Bearings handle precise angular loads in components like landing gear systems. Their P4A tolerance class ensures the accuracy needed for critical flight operations.

For robotics, S71920 ACDGA/HCP4A Bearings provide smooth motion in robotic arms, thanks to their extra-light preload and high-speed capability. The chrome steel rings add durability, making them suitable for repetitive tasks.

Medical imaging devices benefit from S71920 ACDGA/HCP4A Bearings’ low vibration and high precision. The grease lubrication ensures quiet operation, which is essential in sensitive diagnostic equipment.

In electric vehicle motors, S71920 ACDGA/HCP4A Bearings support high-speed rotation while maintaining efficiency. Their ceramic balls help reduce energy loss, contributing to longer battery life.

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