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Super Precision Angular Contact Ball Bearings 71921 CD/P4ADGB

Super Precision Angular Contact Ball Bearings 71921 CD/P4ADGB

The 71921 CD/P4ADGB is a super precision angular contact ball bearing with a 105mm bore and 145mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 22388 lbf and operates smoothly at speeds up to 16000 RPM.

Its 15° contact angle and universal matching design allow flexible arrangements like back-to-back or face-to-face, ideal for complex setups. The phenolic cage ensures durability while keeping the bearing lightweight at 1.64kg.

This bearing is lubricated for easy maintenance and performs reliably in temperatures from -30°C to 110°C. It meets P4A tolerance standards for precision applications.

Perfect for high-speed machinery like spindles or CNC equipment where accuracy and load capacity are crucial. Interchangeable with SKF bearings for convenient replacements.

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Product Parameters

  • Part Number 71921 CD/P4ADGB
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 105 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 145 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 40 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 12.7 mm
  • Ball Qty 27
  • Contact Angle 15°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement Universal matching
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
  • Preload Light / Class B
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 22388 lbf
  • Static Radial Load 30825 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 16000 rpm
  • Weight 1.64 kg
Super Precision Angular Contact Ball Bearings 71921 CD/P4ADGB dimension drawing
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Features

Performance Features of 71921 CD/P4ADGB Bearing

71921 CD/P4ADGB Bearing is crafted with chrome steel rings and balls, ensuring high precision and durability.

Its 15° contact angle and universal matching design provide excellent load distribution in angular contact applications.

With a dynamic radial load capacity of 22388 lbf, it handles demanding conditions while maintaining smooth operation.

The phenolic cage enhances stability, reducing friction and wear for extended performance.

How Does 71921 CD/P4ADGB Bearing Achieve High-Speed Performance?

71921 CD/P4ADGB Bearing supports speeds up to 16,000 rpm, making it ideal for high-speed machinery.

Its light preload and P4A tolerance class ensure precise alignment and minimal vibration.

The open design allows for efficient lubrication, further enhancing its high-speed capabilities.

Chrome steel construction resists wear, maintaining performance even under heavy radial loads.

Engineered for Precision: 71921 CD/P4ADGB Bearing

71921 CD/P4ADGB Bearing’s tight tolerances and universal matching enable exact alignment in paired setups.

Its 27 balls, each 12.7 mm in diameter, distribute loads evenly for consistent operation.

The phenolic cage minimises friction, contributing to quiet and efficient performance.

With a static radial load capacity of 30825 lbf, it excels in precision applications.

Steel vs Ceramic Bearings: Strengths of 71921 CD/P4ADGB Bearing

71921 CD/P4ADGB Bearing uses chrome steel for its rings and balls, offering a balance of strength and affordability.

This material choice ensures reliable performance in temperatures ranging from -30°C to 110°C.

The phenolic cage provides lightweight stability, reducing centrifugal forces at high speeds.

Its universal matching feature allows flexible arrangement, catering to diverse operational needs.

Application

Common Applications of 71921 CD/P4ADGB Bearing
In precision machine tools, 71921 CD/P4ADGB Bearing excels due to its angular contact design, handling both radial and axial loads smoothly. The P4A tolerance ensures minimal vibration, crucial for high-accuracy machining.

Where Is 71921 CD/P4ADGB Bearing Used?
You’ll often find 71921 CD/P4ADGB Bearing in spindle systems for CNC machines, where its light preload enhances stability during high-speed operations. The universal matching feature simplifies installation in complex setups.

Optimized for Performance: 71921 CD/P4ADGB Bearing
This bearing’s phenolic cage reduces friction, making it ideal for applications like dental drills or small robotics. Its chrome steel construction ensures longevity even in demanding environments.

Automotive vs Aerospace: Applications of 71921 CD/P4ADGB Bearing
In automotive testing rigs, 71921 CD/P4ADGB Bearing provides reliable support for dynamic load simulations. For aerospace, its tight tolerances meet the precision needs of gyroscope assemblies.

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