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Super Precision Angular Contact Ball Bearings S7021 ACD/HCP4A

Super Precision Angular Contact Ball Bearings S7021 ACD/HCP4A

The S7021 ACD/HCP4A is a super precision angular contact ball bearing with a 105mm bore and 160mm outer diameter, crafted from durable chrome steel. Its 25° contact angle and ceramic balls ensure smooth operation under high radial loads up to 20340 lbf.

Sealed for protection, this bearing runs at speeds up to 9000 RPM and handles temperatures from -30°C to 110°C. The phenolic cage adds strength while keeping it lightweight at 1.33kg.

Preloaded and available in matched sets, it’s ideal for high-precision applications like machine tool spindles or robotics. Compliant with P4 tolerance standards, it offers reliable performance in demanding environments.

Interchangeable with SKF bearings, this model simplifies replacements. Its sealed design reduces maintenance, making it a practical choice for industrial use.

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Product Parameters

  • Part Number S7021 ACD/HCP4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 105 mm
  • Bore Dia Tolerance -0.008mm to 0
  • Outer Dia 160 mm
  • Outer Dia Tolerance -0.01mm to 0
  • Width 26 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 17.462 mm
  • Ball Qty 21
  • 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 Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 20340 lbf
  • Static Radial Load 20925 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 9000 rpm
  • Weight 1.33 kg
  • Price（$） 144.594
Super Precision Angular Contact Ball Bearings S7021 ACD/HCP4A dimension drawing
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Features

How Is S7021 ACD/HCP4A Bearing Engineered for Reliability?

S7021 ACD/HCP4A Bearing features a 25° contact angle, optimised for handling combined radial and axial loads.
The ceramic balls and chrome steel rings enhance durability, while the phenolic cage ensures smooth operation.

With a dynamic radial load capacity of 20,340 lbf, it performs reliably in high-stress applications.
Its P4 tolerance class guarantees precision, making it suitable for demanding industrial uses.

The sealed design protects against contaminants, extending maintenance intervals.
Operating at speeds up to 9,000 rpm, it balances performance and longevity effortlessly.

Application

Industrial Uses of S7021 ACD/HCP4A Bearing
S7021 ACD/HCP4A Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The ceramic balls reduce friction, making it ideal for high-speed operations.

In automotive applications, S7021 ACD/HCP4A Bearing supports performance in gearboxes and electric motors, thanks to its robust chrome steel construction. The sealed design also helps keep contaminants out, extending service life.

For automation systems, S7021 ACD/HCP4A Bearing is a reliable choice for robotic arms and CNC machines, where consistent performance is key. The phenolic cage adds durability while maintaining smooth movement.

Medical imaging devices benefit from S7021 ACD/HCP4A Bearing’s precision and low noise levels, ensuring reliable operation in sensitive environments. Its P4 tolerance class guarantees the high accuracy needed for diagnostic equipment.

In consumer electronics, S7021 ACD/HCP4A Bearing can be found in high-end printers and scanners, where its compact size and efficiency are valued. The lubricated design ensures quiet and long-lasting performance.

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