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Super Precision Angular Contact Ball Bearings S7028 ACD/HCP4A

Super Precision Angular Contact Ball Bearings S7028 ACD/HCP4A

The S7028 ACD/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 25° contact angle and comes sealed for added protection.

This bearing handles radial loads up to 32850 lbf and operates smoothly at speeds up to 7000 RPM. Its ceramic balls and phenolic cage reduce friction, enhancing performance in demanding conditions.

The sealed design keeps lubrication in and contaminants out, making it low-maintenance. It’s ideal for precision applications like machine tool spindles or high-speed robotics.

With a temperature range of -30°C to 110°C and P4 tolerance class, it offers reliable accuracy. Weighing 2.85kg, it’s robust yet manageable for its size. Interchangeable with SKF bearings for easy replacement.

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Product Parameters

  • Part Number S7028 ACD/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 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 32850 lbf
  • Static Radial Load 35100 lbf
  • Lubrication Lubricated
  • Temperature Range -30° to 110 °C
  • Max Speed 7000 rpm
  • Weight 2.85 kg
  • Price（$） 286.614
Super Precision Angular Contact Ball Bearings S7028 ACD/HCP4A dimension drawing
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Features

Performance Features of S7028 ACD/HCP4A Bearing

S7028 ACD/HCP4A Bearing features a 25° contact angle, optimised for handling combined radial and axial loads.
The ceramic balls and chrome steel rings enhance durability while reducing friction.

With a dynamic radial load capacity of 32,850 lbf, it performs reliably in high-stress applications.
Its phenolic cage ensures smooth operation, even at speeds up to 7,000 rpm.

The sealed design protects against contaminants, extending maintenance intervals.
Operating between -30°C to 110°C, it suits demanding industrial environments.

Precision P4 (ABEC-7) tolerance guarantees consistent performance in critical tasks.
Its matched arrangement option allows for customised preload configurations.

Application

Industrial Uses of S7028 ACD/HCP4A Bearing
S7028 ACD/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 long operational hours.

Where Is S7028 ACD/HCP4A Bearing Used?
In robotics, S7028 ACD/HCP4A Bearing provides smooth motion control for articulated arms, thanks to its phenolic cage and sealed design. The P4 tolerance class ensures minimal vibration during high-speed tasks.

Perfect Fit for Automation: S7028 ACD/HCP4A Bearing
S7028 ACD/HCP4A Bearing excels in automated production lines, handling both radial and axial loads with ease. Its lubricated construction reduces maintenance needs, ideal for continuous operation.

Medical vs Industrial: Where S7028 ACD/HCP4A Bearing Excels
For medical imaging devices, S7028 ACD/HCP4A Bearing offers quiet and precise movement, crucial for diagnostic accuracy. In industrial settings, its durability supports heavy machinery like compressors and pumps.

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