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Super Precision Angular Contact Ball Bearings S7028 CD/HCP4A

Super Precision Angular Contact Ball Bearings S7028 CD/HCP4A

The S7028 CD/HCP4A is a super precision angular contact ball bearing with a 140mm bore and 210mm outer diameter, crafted from high-quality chrome steel. It features a 15° contact angle and comes sealed for added protection.

With a dynamic radial load capacity of 34425 lbf, it handles heavy loads while spinning smoothly at speeds up to 7500 RPM. The ceramic balls and phenolic cage ensure low friction and long-lasting performance.

Its P4 tolerance class (ABEC-7) guarantees high precision, making it ideal for demanding applications. The bearing operates efficiently in temperatures from -30°C to 110°C.

This model is interchangeable with SKF bearings and is available in matched sets for paired use. Perfect for precision machinery like spindles or high-speed rotary tables where accuracy is crucial.

Weighing 2.85kg, it’s robust yet manageable for its size. Preloaded options are available for applications requiring minimal deflection.

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Product Parameters

  • Part Number S7028 CD/HCP4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 140 mm
  • Bore Dia Tolerance -0.01mm to 0
  • Outer Dia 210 mm
  • Outer Dia Tolerance -0.011mm to 0
  • Width 33 mm
  • Width Tolerance -0.24mm to 0
  • Ball Dia 22.225 mm
  • Ball Qty 22
  • Contact Angle 15°
  • 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 34425 lbf
  • Static Radial Load 37350 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 7500 rpm
  • Weight 2.85 kg
  • Price（$） 286.893
Super Precision Angular Contact Ball Bearings S7028 CD/HCP4A dimension drawing
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Features

Performance Features of S7028 CD/HCP4A Bearing

S7028 CD/HCP4A Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
The ceramic balls and chrome steel rings enhance durability and reduce friction under high radial loads.

With a dynamic radial load capacity of 34425 lbf, it handles demanding operations smoothly.
The phenolic cage ensures stability and reduces wear, even at speeds up to 7,500 rpm.

S7028 CD/HCP4A Bearing operates efficiently in temperatures from -30° to 110°C.
Its sealed design and preload availability make it suitable for precision tasks requiring minimal maintenance.

Application

Industrial Uses of S7028 CD/HCP4A Bearing
S7028 CD/HCP4A Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The ceramic balls reduce friction, making it suitable for high-speed operations.

In robotics, S7028 CD/HCP4A Bearing provides reliable performance in articulated arms, thanks to its phenolic cage and sealed design. This helps maintain smooth movement even in demanding automated processes.

For aerospace applications, S7028 CD/HCP4A Bearing’s P4 tolerance class meets strict precision requirements. Its chrome steel rings and ceramic balls offer durability under varying temperatures and loads.

Where Is S7028 CD/HCP4A Bearing Used?
S7028 CD/HCP4A Bearing finds its place in medical imaging devices, where consistent rotation is vital. The lubricated design ensures quiet operation, crucial for sensitive environments.

In automotive testing equipment, S7028 CD/HCP4A Bearing handles radial and axial loads with ease. Its matched arrangement option allows for customised setups in performance testing rigs.

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