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Super Precision Angular Contact Ball Bearings 71820 ACD/P4DBG90

Super Precision Angular Contact Ball Bearings 71820 ACD/P4DBG90

The 71820 ACD/P4DBG90 is a super precision angular contact ball bearing with a 100mm bore and 125mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 7762 lbf and operates smoothly at speeds up to 15,000 RPM.

Its 25° contact angle and matched arrangement of two bearings (DB) provide excellent stability for angular loads. The phenolic cage ensures quiet operation and long service life.

Preloaded for precision, this bearing is ideal for high-speed applications like machine tool spindles or robotics. It performs reliably in temperatures from -30°C to 110°C.

Weighing 0.62kg, it’s a robust yet lightweight choice for demanding setups. Compliant with P4 tolerance standards, it’s interchangeable with SKF bearings for easy replacement.

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Product Parameters

  • Part Number 71820 ACD/P4DBG90
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 100 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 125 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 26 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 7.144 mm
  • Ball Qty 34
  • Contact Angle 25°
  • Tolerance Class P4
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 2 bearings <> DB
  • 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 7762 lbf
  • Static Radial Load 12375 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 15000 rpm
  • Weight 0.62 kg
Super Precision Angular Contact Ball Bearings 71820 ACD/P4DBG90 dimension drawing
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Features

Performance Features of 71820 ACD/P4DBG90 Bearing

71820 ACD/P4DBG90 Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.

Its chrome steel rings and balls provide strong resistance to both dynamic and static radial loads, reaching up to 7762 lbf and 12375 lbf respectively.

The phenolic cage ensures smooth operation at high speeds, with a maximum speed of 15,000 rpm.

With a P4 tolerance class, it delivers reliable precision in demanding conditions.

Application

Industrial Uses of 71820 ACD/P4DBG90 Bearing
71820 ACD/P4DBG90 Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The matched arrangement of two bearings provides stability in demanding industrial environments.

In automotive applications, 71820 ACD/P4DBG90 Bearing supports high-speed components like turbochargers and transmission systems. Its phenolic cage offers durability under continuous operation, making it a reliable choice for performance vehicles.

For robotics and automation, 71820 ACD/P4DBG90 Bearing’s P4 tolerance class ensures smooth movement in robotic arms and CNC machines. The open seal design allows for easy lubrication, extending its service life in automated production lines.

Medical imaging devices benefit from 71820 ACD/P4DBG90 Bearing’s precision, as it maintains consistent performance in MRI and CT scanners. The chrome steel construction ensures reliability in critical healthcare equipment.

In consumer electronics, 71820 ACD/P4DBG90 Bearing can be found in high-end printers and optical devices. Its compact size and high-speed capability make it suitable for precision-driven household gadgets.

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