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Super Precision Angular Contact Ball Bearings S7028 CD/P4AQBCC

Super Precision Angular Contact Ball Bearings S7028 CD/P4AQBCC

The S7028 CD/P4AQBCC is a super precision angular contact ball bearing with a 140mm bore and 210mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 90675 lbf and operates smoothly at speeds up to 11000 RPM.

Its sealed design and phenolic cage ensure durability and minimal maintenance, while the 15° contact angle provides excellent stability. The bearing comes in a matched set of four, preloaded for consistent performance.

Ideal for high-precision applications like machine tools or spindle systems, it works in temperatures from -30°C to 110°C. The grease lubrication simplifies upkeep, making it a practical choice for demanding environments.

Weighing 13.8kg, it’s robust yet designed for precision. Compliant with P4A tolerance standards, it’s interchangeable with SKF bearings for easy replacement.

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Product Parameters

  • Part Number S7028 CD/P4AQBCC
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 140 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 210 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 132 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 22.225 mm
  • Ball Qty 22
  • Contact Angle 15°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Sealed
  • Matched Arrangement 4 bearings <<>> QBC
  • Number Of Bearings In Matched Set 4
  • 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 90675 lbf
  • Static Radial Load 147375 lbf
  • Lubrication Grease
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 13.8 kg
Super Precision Angular Contact Ball Bearings S7028 CD/P4AQBCC dimension drawing
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Features

Performance Features of S7028 CD/P4AQBCC Bearing

S7028 CD/P4AQBCC Bearing is designed with a 15° contact angle, optimising load distribution for precision applications.
The chrome steel construction ensures durability and resistance to wear under high radial loads.

With a dynamic radial load capacity of 90675 lbf, it handles demanding operations with ease.
The phenolic cage maintains ball alignment, reducing friction and enhancing performance.

S7028 CD/P4AQBCC Bearing operates smoothly at speeds up to 11,000 rpm, thanks to its sealed design.
Its moderate preload (Class C) ensures consistent performance in matched arrangements of four bearings.

The temperature range of -30°C to 110°C allows reliable use in various environments.
Grease lubrication further enhances its longevity and reduces maintenance needs.

Application

Industrial Uses of S7028 CD/P4AQBCC Bearing
S7028 CD/P4AQBCC Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate spindle rotation. The sealed construction helps maintain performance in environments with dust or debris.

In aerospace applications, S7028 CD/P4AQBCC Bearing supports critical components like helicopter rotors, thanks to its moderate preload and high dynamic load capacity. The phenolic cage reduces weight while maintaining strength.

For automation systems, S7028 CD/P4AQBCC Bearing provides reliable performance in robotic arms, where smooth motion and precision are essential. Its grease lubrication ensures long service life with minimal maintenance.

Medical imaging devices benefit from S7028 CD/P4AQBCC Bearing’s consistent operation and low noise levels. The chrome steel construction offers durability in high-use scenarios.

In wind turbine gearboxes, S7028 CD/P4AQBCC Bearing handles high radial loads while maintaining efficiency. The P4A tolerance class ensures tight precision for optimal energy output.

Q&A

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