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Super Precision Angular Contact Ball Bearings S7028 ACD/P4ADGA

Super Precision Angular Contact Ball Bearings S7028 ACD/P4ADGA

The S7028 ACD/P4ADGA 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 52,650 lbf and operates smoothly at speeds up to 11,000 RPM.

Its sealed design keeps lubrication in and contaminants out, while the phenolic cage ensures quiet, efficient performance. The bearing works reliably in temperatures from -30°C to 110°C.

This model is part of a matched set of two, suitable for universal mounting in back-to-back, face-to-face, or tandem configurations. Ideal for high-precision applications like machine tool spindles or industrial pumps.

Weighing 6.89kg, it’s robust yet designed for precision. Compliant with P4A tolerance standards for exceptional accuracy.

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Product Parameters

  • Part Number S7028 ACD/P4ADGA
  • 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 66 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 22.225 mm
  • Ball Qty 22
  • Contact Angle 25°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Sealed
  • Matched Arrangement Universal matching
  • Number Of Bearings In Matched Set 2
  • 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 Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 52650 lbf
  • Static Radial Load 70875 lbf
  • Lubrication Grease
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 6.89 kg
Super Precision Angular Contact Ball Bearings S7028 ACD/P4ADGA dimension drawing
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Features

Performance Features of S7028 ACD/P4ADGA Bearing

S7028 ACD/P4ADGA Bearing is crafted with chrome steel rings and balls, ensuring high precision and durability.

Its 25° contact angle and universal matching arrangement provide excellent load distribution and stability.

The phenolic cage enhances performance at high speeds, with a maximum rating of 11,000 rpm.

With a dynamic radial load capacity of 52,650 lbf, it handles demanding applications with ease.

Application

Super Precision Angular Contact Ball Bearings S7028 ACD/P4ADGA are widely used in high-speed machine tools, where their 25° contact angle ensures accurate radial and axial load handling. The sealed design keeps contaminants out, extending service life in demanding industrial environments.

In aerospace applications, S7028 ACD/P4ADGA supports critical components like turbine shafts, thanks to its phenolic cage and grease lubrication for smooth operation. The universal matching feature allows flexible arrangements to suit various load requirements.

For robotics, S7028 ACD/P4ADGA’s extra-light preload enables precise motion control in automated arms and CNC systems. Its P4A tolerance class guarantees consistent performance in high-precision tasks.

Medical imaging devices benefit from S7028 ACD/P4ADGA’s low friction and thermal stability, ensuring reliable scans. The chrome steel construction also resists wear in continuous-use scenarios.

In electric vehicle drivetrains, S7028 ACD/P4ADGA handles combined loads efficiently, contributing to energy-saving performance. The metric dimensions make it compatible with European and Asian automotive standards.

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