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Super Precision Angular Contact Ball Bearings 71908 ACD/P4ADBC

Super Precision Angular Contact Ball Bearings 71908 ACD/P4ADBC

The 71908 ACD/P4ADBC is a super precision angular contact ball bearing measuring 40mm by 62mm by 24mm, crafted from high-grade chrome steel for durability. It features a 25° contact angle and comes in a matched pair for balanced performance.

This bearing handles radial loads up to 4275 lbf and operates smoothly at speeds up to 56,000 RPM. Its phenolic cage ensures quiet and efficient rotation, even under moderate preload conditions.

The open design allows for easy lubrication, while the P4A tolerance class guarantees precision. Ideal for high-speed applications like machine tool spindles or precision instruments.

Weighing just 0.22kg, it’s lightweight yet robust. Suitable for temperatures from -30°C to 110°C, making it versatile for various industrial environments.

The 71908 ACD/P4ADBC is interchangeable with SKF bearings, offering a reliable replacement option. Its matched pair setup ensures stability in demanding angular contact scenarios.

The 6.35mm balls and 21-ball arrangement provide smooth operation under dynamic loads. The moderate preload (Class C) enhances performance without excessive friction.

Perfect for applications requiring high precision, such as CNC machinery or robotics. The open seal design simplifies maintenance and lubrication.

Compliant with standard temperature ranges, it’s a dependable choice for both light and heavy-duty machinery.

This bearing’s 40mm bore and 62mm outer diameter make it suitable for compact yet high-performance systems. The chrome steel construction ensures long-lasting wear resistance.

With a dynamic radial load capacity of 4275 lbf, it handles demanding tasks effortlessly. The phenolic cage reduces noise and vibration, ideal for sensitive equipment.

The matched pair (DB arrangement) provides balanced load distribution, crucial for precision engineering. Easy to install and maintain, thanks to its open design.

A top pick for applications like aerospace components or medical devices where accuracy and reliability are paramount.

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Product Parameters

  • Part Number 71908 ACD/P4ADBC
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 40 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 62 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 24 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 6.35 mm
  • Ball Qty 21
  • 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 4275 lbf
  • Static Radial Load 3600 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 56000 rpm
  • Weight 0.22 kg
Super Precision Angular Contact Ball Bearings 71908 ACD/P4ADBC dimension drawing
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Features

Performance Features of 71908 ACD/P4ADBC Bearing

71908 ACD/P4ADBC Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
The chrome steel rings and balls ensure durability, while the phenolic cage reduces friction and noise.

With a dynamic radial load capacity of 4275 lbf, it handles demanding conditions reliably.
Its P4A tolerance class guarantees precision, making it suitable for high-speed applications up to 56,000 rpm.

The matched arrangement of two bearings (DB) provides stability and balanced performance.
Moderate preload (Class C) enhances rigidity without compromising smooth operation.

Operating between -30°C to 110°C, 71908 ACD/P4ADBC Bearing performs consistently in varied environments.
Its open design simplifies lubrication, ensuring long service life with minimal maintenance.

Application

Industrial Uses of 71908 ACD/P4ADBC Bearing
71908 ACD/P4ADBC Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The moderate preload and P4A tolerance class make it suitable for applications demanding tight control.

In robotics, 71908 ACD/P4ADBC Bearing supports articulated arms, providing smooth motion and reduced vibration. Its phenolic cage offers lightweight durability, ideal for repetitive movements.

For aerospace components, 71908 ACD/P4ADBC Bearing handles both radial and axial loads in compact spaces. The chrome steel construction ensures reliability under varying temperatures and speeds.

What Makes 71908 ACD/P4ADBC Bearing a Preferred Choice?
71908 ACD/P4ADBC Bearing excels in dental drill handpieces, where precision and speed are critical. The matched arrangement reduces setup time, enhancing efficiency in medical settings.

In optical equipment, 71908 ACD/P4ADBC Bearing maintains alignment stability for lenses and mirrors. Its open design allows for easy lubrication, extending service life in delicate instruments.

Built for Heavy-Duty Use: 71908 ACD/P4ADBC Bearing
71908 ACD/P4ADBC Bearing is a reliable option for industrial pumps, handling both thrust and radial forces. The phenolic cage resists corrosion, making it suitable for wet environments.

For electric motors, 71908 ACD/P4ADBC Bearing reduces friction at high speeds. Its 25° contact angle optimises load distribution, ensuring consistent performance over time.

Automotive vs Aerospace: Applications of 71908 ACD/P4ADBC Bearing
In automotive transmissions, 71908 ACD/P4ADBC Bearing supports gear shafts with minimal noise. The metric sizing ensures compatibility with European and Asian vehicle designs.

For aircraft landing gear systems, 71908 ACD/P4ADBC Bearing withstands heavy loads and shocks. Its temperature range suits both ground and high-altitude conditions.

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