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Super Precision Angular Contact Ball Bearings 7021 ACDGC/P4A

Super Precision Angular Contact Ball Bearings 7021 ACDGC/P4A

The 7021 ACDGC/P4A 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 efficiently manages both radial and axial loads, supporting up to 20340 lbf dynamically.

Designed for high-speed operations, it reaches speeds up to 16000 RPM while maintaining stability. The phenolic cage reduces friction and wear, ensuring smooth performance even under moderate preload conditions.

This bearing suits demanding applications like machine tool spindles or precision equipment, where accuracy is key. It operates reliably in temperatures from -30°C to 110°C.

Weighing 1.59kg, it’s robust yet manageable for its size. Compatible with SKF models, it’s a versatile choice for replacements or upgrades. The open design allows easy lubrication, extending its service life.

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Product Parameters

  • Part Number 7021 ACDGC/P4A
  • 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 26 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 No
  • Number Of Bearings In Matched Set 3
  • Universal Matching Bearing Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
  • Preload Moderate / Class C
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 20340 lbf
  • Static Radial Load 20925 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16000 rpm
  • Weight 1.59 kg
Super Precision Angular Contact Ball Bearings 7021 ACDGC/P4A dimension drawing
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Features

Performance Features of 7021 ACDGC/P4A Bearing

7021 ACDGC/P4A Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and balls enhance durability, supporting dynamic radial loads up to 20,340 lbf.

The phenolic cage ensures smooth operation, even at high speeds of 16,000 rpm.
Precision tolerances (P4A) and moderate preload (Class C) contribute to reliable performance.

With a temperature range of -30°C to 110°C, 7021 ACDGC/P4A Bearing adapts to various operating conditions.
Its universal matching capability allows flexible arrangements like back-to-back or face-to-face configurations.

The open design simplifies lubrication, reducing maintenance needs.
Weighing 1.59 kg, it balances strength and practicality for precision engineering tasks.

Application

Key Fields for 7021 ACDGC/P4A Bearing
7021 ACDGC/P4A Bearing is commonly used in high-speed machine tools, where its moderate preload and 25° contact angle ensure precise spindle operation. The open design and phenolic cage make it suitable for applications requiring minimal friction and heat generation.

In robotics, 7021 ACDGC/P4A Bearing supports articulated arms, providing smooth movement and load handling. Its P4A tolerance class guarantees consistent performance in repetitive tasks.

For aerospace components, 7021 ACDGC/P4A Bearing’s chrome steel construction offers durability in demanding conditions. The universal matching feature allows flexible arrangement in complex assemblies.

Automotive testing equipment benefits from 7021 ACDGC/P4A Bearing’s high dynamic radial load capacity. Its lubricated design ensures long service life even under continuous use.

Q&A

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