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Super Precision Angular Contact Ball Bearings 71909 CDGA/P4A

Super Precision Angular Contact Ball Bearings 71909 CDGA/P4A

The 71909 CDGA/P4A is a super precision angular contact ball bearing with a 45mm bore and 68mm outer diameter, crafted from high-quality chrome steel. It features a 15° contact angle and is designed for angular contact loads, handling up to 2925 lbf dynamically.

With a phenolic cage and open design, it allows for smooth operation at speeds up to 41,000 RPM. The extra light preload (Class A) ensures minimal friction, making it efficient for high-speed applications.

This bearing is part of a universal matching set, suitable for back-to-back, face-to-face, or tandem arrangements. Ideal for precision machinery like spindles or CNC equipment where accuracy and speed are crucial.

Weighing just 0.13kg, it’s lightweight yet robust, and operates reliably in temperatures from -30°C to 110°C. Compliant with P4A tolerance class for exceptional precision.

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Product Parameters

  • Part Number 71909 CDGA/P4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 45 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 68 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 12 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 6.35 mm
  • Ball Qty 23
  • Contact Angle 15°
  • 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 Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 2925 lbf
  • Static Radial Load 2138 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 41000 rpm
  • Weight 0.13 kg
  • Price（$） 75.258
Super Precision Angular Contact Ball Bearings 71909 CDGA/P4A dimension drawing
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Features

Performance Features of 71909 CDGA/P4A Bearing

71909 CDGA/P4A Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
Its chrome steel construction ensures durability and resistance to wear under dynamic radial loads up to 2925 lbf.
The phenolic cage maintains ball alignment, reducing friction and enabling smooth operation at speeds up to 41,000 rpm.
With a precision P4A tolerance class, it delivers consistent performance in demanding conditions.

Application

Key Fields for 71909 CDGA/P4A Bearing
71909 CDGA/P4A Bearing is commonly used in high-speed machine tools, where its precision and angular contact design ensure accurate spindle performance. The open seal type allows for efficient lubrication, extending its service life in demanding conditions.

In automotive applications, 71909 CDGA/P4A Bearing supports components like turbochargers and transmission systems, where its extra light preload enhances efficiency. The metric sizing ensures compatibility with a variety of vehicle designs.

For medical imaging devices, 71909 CDGA/P4A Bearing’s phenolic cage and chrome steel construction provide reliable operation. Its high-speed capability makes it suitable for equipment requiring consistent, smooth rotation.

Automation systems benefit from 71909 CDGA/P4A Bearing’s ability to handle angular loads in robotic arms. The P4A tolerance class ensures precise movement, crucial for automated production lines.

In consumer electronics, 71909 CDGA/P4A Bearing is found in high-performance fans and small motors. Its lightweight design and durability make it a practical choice for everyday devices.

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