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Super Precision Angular Contact Ball Bearings 7021 ACD/HCP4ALTBTA

Super Precision Angular Contact Ball Bearings 7021 ACD/HCP4ALTBTA

The 7021 ACD/HCP4ALTBTA is a super precision angular contact ball bearing with a 105mm bore and 160mm outer diameter, crafted from high-quality chrome steel. It features a 25° contact angle and comes in a set of three matched bearings for balanced performance.

This bearing handles radial loads up to 44775 lbf and reaches speeds of 16250 RPM, thanks to its ceramic balls and phenolic cage. The extra-light preload ensures smooth operation with minimal friction.

Its open design allows for easy lubrication, while the P4A tolerance class guarantees exceptional accuracy. Ideal for high-speed applications like machine tool spindles or precision robotics.

Weighing 3.95kg, it operates reliably in temperatures from -30°C to 110°C. The matched set arrangement (TBT) provides stability for demanding angular contact loads.

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Product Parameters

  • Part Number 7021 ACD/HCP4ALTBTA
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 105 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 160 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 78 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 17.462 mm
  • Ball Qty 21
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 3 bearings <>> TBT
  • Number Of Bearings In Matched Set 3
  • Universal Matching Bearing No
  • Preload Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 44775 lbf
  • Static Radial Load 61875 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16250 rpm
  • Weight 3.95 kg
Super Precision Angular Contact Ball Bearings 7021 ACD/HCP4ALTBTA dimension drawing
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Features

Performance Features of 7021 ACD/HCP4ALTBTA Bearing

7021 ACD/HCP4ALTBTA Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and ceramic balls enhance durability and reduce friction under high-speed conditions.

The phenolic cage ensures smooth operation, even at speeds up to 16,250 rpm.
With a dynamic radial load capacity of 44,775 lbf, it handles demanding tasks with ease.

Three matched bearings in a TBT arrangement provide extra stability for precision applications.
The extra light preload (Class A) ensures minimal friction and extended service life.

7021 ACD/HCP4ALTBTA Bearing operates efficiently in temperatures ranging from -30°C to 110°C.
Its open design simplifies maintenance while maintaining high performance standards.

Application

Industrial Uses of 7021 ACD/HCP4ALTBTA Bearing
7021 ACD/HCP4ALTBTA Bearing is commonly used in high-precision machine tools, where its ceramic balls and phenolic cage reduce friction for smoother operation. The matched set of three bearings ensures stability in demanding industrial environments.

In automotive applications, 7021 ACD/HCP4ALTBTA Bearing supports high-speed spindle systems, thanks to its extra-light preload and angular contact design. Its metric sizing makes it a versatile choice for European and Asian vehicle models.

For medical imaging devices, 7021 ACD/HCP4ALTBTA Bearing’s chrome steel rings and ceramic balls provide reliable performance under consistent loads. The open seal design allows for easy maintenance in critical healthcare equipment.

Automation systems benefit from 7021 ACD/HCP4ALTBTA Bearing’s precision, particularly in robotic arms and CNC machinery. The P4A tolerance class ensures accuracy in repetitive tasks.

In consumer electronics, 7021 ACD/HCP4ALTBTA Bearing is found in high-end printers and scanners, where its low friction and durability enhance performance. The lubricated design extends its lifespan in continuous-use scenarios.

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