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Super Precision Angular Contact Ball Bearings S71909 ACB/HCP4A

Super Precision Angular Contact Ball Bearings S71909 ACB/HCP4A

The S71909 ACB/HCP4A is a super precision angular contact ball bearing with a 45mm bore and 68mm outer diameter, measuring just 12mm wide. Made from chrome steel with ceramic balls, it offers smooth operation and durability.

This bearing handles radial loads up to 1580 lbf and reaches speeds of 30,000 RPM, thanks to its phenolic cage and 25° contact angle. It comes pre-lubricated and sealed for low maintenance.

Its P4 tolerance class ensures high precision, making it suitable for demanding applications like machine tools or high-speed spindles. The ceramic balls reduce friction and heat buildup.

Weighing only 0.13kg, it’s lightweight yet robust. Compatible with SKF bearings, it’s a reliable choice for replacements. Works well in temperatures from -30°C to 110°C.

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Product Parameters

  • Part Number S71909 ACB/HCP4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 45 mm
  • Bore Dia Tolerance -0.006mm to 0
  • Outer Dia 68 mm
  • Outer Dia Tolerance -0.007mm to 0
  • Width 12 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 4.762 mm
  • Ball Qty 27
  • Contact Angle 25°
  • Tolerance Class P4 (ABEC-7)
  • System of Measurement Metric
  • Seal Type Sealed
  • Matched Arrangement Available
  • Preload Available
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Ceramic
  • Cage Material Phenolic
  • Dynamic Radial Load 1580 lbf
  • Static Radial Load 1238 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 30000 rpm
  • Weight 0.13 kg
  • Price（$） 389.412
Super Precision Angular Contact Ball Bearings S71909 ACB/HCP4A dimension drawing
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Features

Engineered for Precision: S71909 ACB/HCP4A Bearing

S71909 ACB/HCP4A Bearing features a 25° contact angle, optimised for high-precision angular contact applications.
Its ceramic balls and chrome steel rings ensure smooth operation with minimal friction.

The phenolic cage maintains ball alignment, enhancing durability and performance.
With a maximum speed of 30,000 rpm, it suits high-speed machinery.

S71909 ACB/HCP4A Bearing operates efficiently within a temperature range of -30° to 110°C.
Its sealed design keeps lubrication intact, reducing maintenance needs.

The bearing’s dynamic radial load capacity of 1580 lbf ensures reliable performance.
Precision-engineered to P4 tolerance class, it meets stringent accuracy requirements.

Application

Industrial Uses of S71909 ACB/HCP4A Bearing
S71909 ACB/HCP4A Bearing is commonly used in high-speed machine spindles, where its ceramic balls and phenolic cage reduce friction and heat buildup. The sealed design keeps contaminants out, ensuring long-lasting performance in demanding environments.

What Makes S71909 ACB/HCP4A Bearing a Preferred Choice?
In robotics, S71909 ACB/HCP4A Bearing provides smooth motion control for precision arms and joints, thanks to its 25° contact angle. The P4 tolerance class ensures minimal vibration, which is crucial for delicate tasks.

Perfect Fit for Automation: S71909 ACB/HCP4A Bearing
This bearing excels in CNC machinery, where its matched arrangement and preload options enhance rigidity during heavy cutting operations. The lubricated design also simplifies maintenance for continuous production runs.

Medical vs Industrial: Where S71909 ACB/HCP4A Bearing Excels
In medical imaging devices, S71909 ACB/HCP4A Bearing’s ceramic balls offer quiet operation, while its industrial-grade durability handles frequent use. The chrome steel rings add strength for both applications without compromising precision.

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