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Super Precision Angular Contact Ball Bearings 7021 ACD/P4ATBTB

Super Precision Angular Contact Ball Bearings 7021 ACD/P4ATBTB

The 7021 ACD/P4ATBTB is a super precision angular contact ball bearing with a 105mm bore and 160mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 44775 lbf and operates smoothly at speeds up to 16000 RPM.

Its 25° contact angle and matched set of three bearings provide excellent stability for angular loads. The phenolic cage ensures quiet, long-lasting performance, even in temperatures from -30°C to 110°C.

This bearing is preloaded for light, precise operation, making it ideal for high-precision machinery like CNC spindles or grinding equipment. Its open design allows for easy lubrication and maintenance.

Weighing 4.78kg, it’s a robust choice for industrial applications. Compliant with P4A tolerance standards, it’s interchangeable with SKF bearings for reliable replacements.

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Product Parameters

  • Part Number 7021 ACD/P4ATBTB
  • 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 Light / Class B
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 44775 lbf
  • Static Radial Load 61875 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16000 rpm
  • Weight 4.78 kg
Super Precision Angular Contact Ball Bearings 7021 ACD/P4ATBTB dimension drawing
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Features

Performance Features of 7021 ACD/P4ATBTB Bearing

7021 ACD/P4ATBTB Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls provide high durability under dynamic radial loads up to 44,775 lbf.

The phenolic cage ensures smooth operation at speeds up to 16,000 rpm, reducing friction and wear.
With a precision tolerance class of P4A, it delivers reliable performance in demanding conditions.

7021 ACD/P4ATBTB Bearing operates efficiently within a temperature range of -30°C to 110°C.
Its matched arrangement of three bearings enhances stability and load-bearing capacity.

The open seal design allows for easy lubrication, maintaining optimal performance over time.
Weighing 4.78 kg, it balances strength and practicality for industrial applications.

Application

Industrial Uses of 7021 ACD/P4ATBTB Bearing
The 7021 ACD/P4ATBTB Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. Its light preload and P4A tolerance class make it ideal for applications demanding minimal vibration.

In automotive systems, 7021 ACD/P4ATBTB Bearing supports high-speed components like turbochargers and transmission shafts. The matched arrangement of three bearings provides stability under combined radial and axial loads.

For robotics, 7021 ACD/P4ATBTB Bearing offers smooth motion in articulated arms and joints. The phenolic cage reduces friction, enhancing efficiency in repetitive movements.

Medical imaging devices benefit from 7021 ACD/P4ATBTB Bearing’s precision and reliability. Its chrome steel construction ensures long-term performance in critical diagnostic equipment.

In aerospace applications, 7021 ACD/P4ATBTB Bearing handles high speeds and loads in flight control systems. The open design allows for easy lubrication, maintaining performance in demanding conditions.

Q&A

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