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Super Precision Angular Contact Ball Bearings 71909 CDGA/HCP4A

Super Precision Angular Contact Ball Bearings 71909 CDGA/HCP4A

The 71909 CDGA/HCP4A is a super precision angular contact ball bearing, measuring 45mm by 68mm by 12mm. Made from chrome steel with ceramic balls, it offers smooth operation and durability.

It handles radial loads up to 2925 lbf and spins at speeds up to 41,000 RPM, making it suitable for high-performance applications. The extra light preload ensures minimal friction and precise movement.

Its open design allows for easy lubrication, while the phenolic cage provides stability. The bearing works in temperatures from -30°C to 110°C, ideal for demanding environments.

This model is interchangeable with SKF bearings and can be used in matched sets for back-to-back, face-to-face, or tandem arrangements. Perfect for precision machinery like spindles or robotics.

Weighing just 0.12kg, it’s lightweight yet robust, meeting P4A tolerance standards for high accuracy.

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Product Parameters

  • Part Number 71909 CDGA/HCP4A
  • 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 Ceramic
  • 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 0.12 kg
Super Precision Angular Contact Ball Bearings 71909 CDGA/HCP4A dimension drawing
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Features

Performance Features of 71909 CDGA/HCP4A Bearing

71909 CDGA/HCP4A Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
Its chrome steel rings and ceramic balls enhance durability while reducing friction.

The phenolic cage ensures smooth operation, even at high speeds up to 41,000 rpm.
This design minimises wear, extending the bearing’s service life in demanding conditions.

With a dynamic radial load capacity of 2925 lbf, 71909 CDGA/HCP4A Bearing handles heavy loads reliably.
Its precision P4A tolerance class guarantees consistent performance in high-accuracy applications.

The open seal design allows for easy lubrication, maintaining optimal performance.
71909 CDGA/HCP4A Bearing operates efficiently within a temperature range of -30°C to 110°C.

Application

Common Applications of 71909 CDGA/HCP4A Bearing
71909 CDGA/HCP4A Bearing is widely used in high-speed machine tools, where its precision and ceramic balls ensure smooth operation. The extra light preload makes it ideal for applications requiring minimal friction.

In robotics, 71909 CDGA/HCP4A Bearing supports articulated arms, providing reliable angular contact performance. Its phenolic cage offers durability in continuous operation scenarios.

For aerospace components, 71909 CDGA/HCP4A Bearing’s P4A tolerance class guarantees accuracy in critical systems. The chrome steel rings and ceramic balls enhance its longevity under demanding conditions.

Where Is 71909 CDGA/HCP4A Bearing Used?
You’ll often find 71909 CDGA/HCP4A Bearing in dental drills, where its high-speed capability is essential. The open design allows for easy lubrication, maintaining performance over time.

In 3D printers, 71909 CDGA/HCP4A Bearing ensures precise movement of print heads. Its lightweight construction and ceramic balls reduce inertia, improving print quality.

Built for Heavy-Duty Use: 71909 CDGA/HCP4A Bearing
71909 CDGA/HCP4A Bearing handles heavy loads in industrial pumps, thanks to its robust chrome steel construction. The 15° contact angle optimises load distribution for longer service life.

In electric motors, 71909 CDGA/HCP4A Bearing’s ceramic balls reduce heat generation during high-speed rotation. This makes it a reliable choice for energy-efficient designs.

Automotive vs Aerospace: Applications of 71909 CDGA/HCP4A Bearing
In automotive transmissions, 71909 CDGA/HCP4A Bearing provides smooth angular contact under varying loads. Its metric sizing ensures compatibility with European and Asian vehicle models.

For aerospace actuators, 71909 CDGA/HCP4A Bearing’s P4A tolerance meets strict precision requirements. The ceramic balls and phenolic cage withstand extreme operational conditions.

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