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Super Precision Angular Contact Ball Bearings 71909 ACD/P4ADBCGMM

Super Precision Angular Contact Ball Bearings 71909 ACD/P4ADBCGMM

The 71909 ACD/P4ADBCGMM is a super precision angular contact ball bearing with a 45mm bore and 68mm outer diameter, crafted from durable chrome steel. It features a 25° contact angle and comes in a matched pair for balanced performance.

This bearing handles radial loads up to 4478 lbf and spins smoothly at speeds up to 41,000 RPM. Its phenolic cage ensures quiet operation and long service life, even under moderate preload conditions.

The open design allows for easy lubrication with grease, making maintenance straightforward. It operates reliably in temperatures ranging from -30°C to 110°C.

Ideal for high-precision applications like machine tool spindles or high-speed robotics, where accuracy and stability are key. Weighing just 0.26kg, it’s lightweight yet robust for demanding environments.

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Product Parameters

  • Part Number 71909 ACD/P4ADBCGMM
  • 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 24 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 6.35 mm
  • Ball Qty 23
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement 2 bearings <> DB
  • Number Of Bearings In Matched Set 2
  • Universal Matching Bearing No
  • Preload Moderate / Class C
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 4478 lbf
  • Static Radial Load 4050 lbf
  • Lubrication Grease
  • Temperature Range - 30°C to 110 °C
  • Max Speed 41000 rpm
  • Weight 0.26 kg
  • Price（$） 155.34
Super Precision Angular Contact Ball Bearings 71909 ACD/P4ADBCGMM dimension drawing
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Features

Performance Features of 71909 ACD/P4ADBCGMM Bearing

71909 ACD/P4ADBCGMM Bearing is designed with a 25° contact angle, optimising load distribution for precision applications.
Its chrome steel rings and balls ensure durability, while the phenolic cage reduces friction for smoother operation.

The matched arrangement of two bearings provides balanced performance under moderate preload conditions.
With a dynamic radial load capacity of 4478 lbf, it handles demanding tasks efficiently.

71909 ACD/P4ADBCGMM Bearing operates at speeds up to 41,000 rpm, making it suitable for high-speed machinery.
Its P4A tolerance class ensures consistent precision, even in rigorous conditions.

The grease lubrication system maintains performance within a temperature range of -30°C to 110°C.
This design reduces maintenance needs while extending the bearing’s service life.

Application

Key Fields for 71909 ACD/P4ADBCGMM Bearing
71909 ACD/P4ADBCGMM Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The moderate preload helps maintain stability during high-speed operations.

In automotive applications, 71909 ACD/P4ADBCGMM Bearing supports gearbox systems, providing smooth performance under radial and axial loads. Its phenolic cage offers durability in demanding conditions.

For automation equipment, 71909 ACD/P4ADBCGMM Bearing is ideal for robotic arms, ensuring precise movement and reliability. The grease lubrication extends its service life in continuous operation.

Medical imaging devices benefit from 71909 ACD/P4ADBCGMM Bearing’s low tolerance and high-speed capabilities. The chrome steel construction ensures consistent performance in critical applications.

In consumer electronics, 71909 ACD/P4ADBCGMM Bearing can be found in high-end printers, where its precision enhances print quality. The matched arrangement reduces vibration for quieter operation.

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