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Super Precision Angular Contact Ball Bearings S7028 ACD/P4ADGC

Super Precision Angular Contact Ball Bearings S7028 ACD/P4ADGC

The S7028 ACD/P4ADGC is a super precision angular contact ball bearing with a 140mm bore and 210mm outer diameter, crafted from durable chrome steel. It measures 140mm×210mm×66mm, making it suitable for high-precision applications.

This bearing handles radial loads up to 52650 lbf and operates smoothly at speeds up to 11000 RPM. Its 25° contact angle and moderate preload ensure stable performance under angular loads.

The sealed design keeps grease in and contaminants out, while the phenolic cage offers long-lasting durability. It works well in temperatures from -30°C to 110°C.

Ideal for machine tools or spindle applications, this bearing comes in a matched set of two for universal mounting options. Weighing 6.89kg, it’s robust yet precise. Compliant with P4A tolerance standards for reliable performance.

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Product Parameters

  • Part Number S7028 ACD/P4ADGC
  • 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 Moderate / Class C
  • 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/P4ADGC dimension drawing
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Features

How Is S7028 ACD/P4ADGC Bearing Engineered for Reliability?

S7028 ACD/P4ADGC Bearing is crafted with chrome steel rings and balls, ensuring durability under high radial loads.
Its dynamic radial load capacity of 52,650 lbf makes it suitable for demanding applications.
The phenolic cage maintains ball alignment, reducing friction and extending service life.
With a maximum speed of 11,000 rpm, it delivers both performance and reliability.

Why Choose S7028 ACD/P4ADGC Bearing for Precision Tasks?

S7028 ACD/P4ADGC Bearing features a 25° contact angle, optimised for precision angular contact applications.
The sealed design protects against contaminants, ensuring smooth operation in various environments.
Its universal matching capability allows flexible arrangement options like back-to-back or face-to-face.
With a P4A tolerance class, it guarantees high precision and consistent performance.

Built for Reliability: S7028 ACD/P4ADGC Bearing

S7028 ACD/P4ADGC Bearing’s chrome steel construction resists wear, even under heavy loads.
The grease lubrication ensures smooth operation, reducing maintenance needs over time.
Its moderate preload (Class C) enhances stability and reduces vibration.
With a temperature range of -30°C to 110°C, it performs reliably in diverse conditions.

Steel vs Ceramic Bearings: Strengths of S7028 ACD/P4ADGC Bearing

S7028 ACD/P4ADGC Bearing uses chrome steel for its rings and balls, offering a balance of strength and cost-efficiency.
The phenolic cage provides lightweight durability, reducing centrifugal forces at high speeds.
Its sealed design keeps lubrication in and contaminants out, extending service life.
With a static radial load of 70,875 lbf, it handles heavy loads with ease.

Application

Key Fields for S7028 ACD/P4ADGC Bearing
S7028 ACD/P4ADGC Bearing is widely used in high-precision machine tools, where its 25° contact angle ensures accurate radial and axial load distribution. The sealed design keeps contaminants out, extending service life in demanding workshop conditions.

In robotics, S7028 ACD/P4ADGC Bearing provides smooth motion control for articulated arms, thanks to its moderate preload and universal matching capability. The phenolic cage reduces friction during high-speed operations common in automated systems.

For aerospace applications, S7028 ACD/P4ADGC Bearing handles combined loads in aircraft components while maintaining P4A-grade precision. Its grease lubrication performs reliably across the -30°C to 110°C temperature range encountered during flights.

Medical imaging systems benefit from S7028 ACD/P4ADGC Bearing’s consistent rotation in CT scanner gantries. The chrome steel construction withstands continuous use without compromising diagnostic accuracy.

In electric vehicle powertrains, S7028 ACD/P4ADGC Bearing supports high-RPM motors with minimal vibration. The tandem mounting option allows compact integration within limited space constraints.

Q&A

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