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Super Precision Angular Contact Ball Bearings S71920 ACD/P4A

Super Precision Angular Contact Ball Bearings S71920 ACD/P4A

The S71920 ACD/P4A is a super precision angular contact ball bearing with a 100mm bore and 140mm outer diameter, crafted from high-quality chrome steel. Its 25° contact angle efficiently manages combined radial and axial loads, making it a versatile choice.

The sealed design keeps lubrication in and contaminants out, ensuring smooth operation at speeds up to 8000 RPM. With a phenolic cage, it offers quiet performance and durability under dynamic radial loads of 12870 lbf.

This bearing is available with preload and matched arrangements, ideal for high-precision applications like machine tool spindles or robotics. Compliant with P4 tolerance standards, it guarantees reliable accuracy.

Weighing 0.81kg, it’s robust yet manageable for its size, suitable for temperatures from -30°C to 110°C. Interchangeable with SKF bearings, it’s a practical option for replacements or upgrades.

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Product Parameters

  • Part Number S71920 ACD/P4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 100 mm
  • Bore Dia Tolerance -0.008mm to 0
  • Outer Dia 140 mm
  • Outer Dia Tolerance -0.009mm to 0
  • Width 20 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 12.7 mm
  • Ball Qty 26
  • Contact Angle 25°
  • Tolerance Class P4 (ABEC-7)
  • System of Measurement Metric
  • Seal Type Sealed
  • Matched Arrangement Available
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 12870 lbf
  • Static Radial Load 14175 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 8000 rpm
  • Weight 0.81 kg
  • Price（$） 1447.866
Super Precision Angular Contact Ball Bearings S71920 ACD/P4A dimension drawing
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Features

Performance Features of S71920 ACD/P4A Bearing

S71920 ACD/P4A Bearing is designed with a 25° contact angle, optimising load distribution for precision applications.
Its chrome steel rings and balls ensure durability and consistent performance under high radial loads.

The phenolic cage in S71920 ACD/P4A Bearing reduces friction and maintains stability at speeds up to 8,000 rpm.
Preload options enhance rigidity, making it suitable for demanding angular contact applications.

S71920 ACD/P4A Bearing operates efficiently in temperatures ranging from -30° to 110°C.
Its sealed design protects against contaminants, ensuring long-term reliability.

With a dynamic radial load capacity of 12,870 lbf, S71920 ACD/P4A Bearing handles heavy loads with ease.
The P4 tolerance class guarantees high precision for critical operations.

Application

Industrial Uses of S71920 ACD/P4A Bearing
S71920 ACD/P4A Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The sealed construction helps maintain performance in environments with dust or debris.

In automotive applications, S71920 ACD/P4A Bearing supports high-speed components like electric motor shafts, thanks to its balanced load capacity. The phenolic cage reduces friction, enhancing efficiency in demanding conditions.

For robotics, S71920 ACD/P4A Bearing provides reliable motion control in articulated arms, where smooth operation is essential. Its P4 tolerance class ensures minimal vibration during high-speed movements.

Medical imaging devices benefit from S71920 ACD/P4A Bearing’s consistent performance, crucial for precise positioning in scanners. The chrome steel construction offers durability in sterilised environments.

In automation systems, S71920 ACD/P4A Bearing is ideal for linear guides, where its preload capability ensures stability. The lubricated design extends service life even in continuous operation.

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