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Super Precision Angular Contact Ball Bearings S7028 ACD/P4ATBTA

Super Precision Angular Contact Ball Bearings S7028 ACD/P4ATBTA

The S7028 ACD/P4ATBTA is a super precision angular contact ball bearing with a 140mm bore and 210mm outer diameter, measuring 99mm in width. Made from chrome steel, it’s designed for high-performance applications where accuracy is key.

This bearing handles radial loads up to 70200 lbf and can spin at speeds up to 11000 RPM. Its 25° contact angle and sealed design ensure smooth operation and protection from contaminants.

The matched set of three bearings (arranged TBT) comes with an extra-light preload for precision alignment. The phenolic cage adds durability while keeping the weight manageable at 10.3kg.

Ideal for machine tools or high-speed spindles, it operates in temperatures from -30°C to 110°C. Compatible with SKF bearings, it’s a reliable choice for demanding industrial uses.

Grease-lubricated and meeting P4A tolerance standards, this bearing balances precision with long service life. Its 22 steel balls (22.225mm each) ensure even load distribution.

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Product Parameters

  • Part Number S7028 ACD/P4ATBTA
  • 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 99 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 3 bearings <>> TBT
  • Number Of Bearings In Matched Set 3
  • Universal Matching Bearing No
  • Preload Extra light / Class A
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 70200 lbf
  • Static Radial Load 106875 lbf
  • Lubrication Grease
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 10.3 kg
Super Precision Angular Contact Ball Bearings S7028 ACD/P4ATBTA dimension drawing
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Features

Performance Features of S7028 ACD/P4ATBTA Bearing

S7028 ACD/P4ATBTA Bearing is designed with a 25° contact angle, optimising load distribution for angular contact applications.
Its chrome steel construction ensures durability and resistance to wear under high dynamic radial loads of 70200 lbf.

The sealed design and phenolic cage maintain smooth operation, even at speeds up to 11,000 rpm.
Grease lubrication enhances performance, reducing friction and extending service life.

With a precision tolerance class of P4A, S7028 ACD/P4ATBTA Bearing delivers reliable accuracy in demanding conditions.
The matched arrangement of three bearings ensures stability and balanced load handling.

Operating within a temperature range of -30°C to 110°C, S7028 ACD/P4ATBTA Bearing adapts to various environments.
Its robust design and high static radial load capacity of 106875 lbf make it suitable for heavy-duty applications.

Application

Industrial Uses of S7028 ACD/P4ATBTA Bearing
S7028 ACD/P4ATBTA Bearing is commonly used in high-precision machine tools, where its angular contact design ensures accurate alignment under radial and axial loads. The sealed construction helps maintain performance in environments with dust or debris.

In robotics, S7028 ACD/P4ATBTA Bearing supports articulated arms, providing smooth movement and long service life. The matched set of three bearings enhances stability in complex motion systems.

For aerospace applications, S7028 ACD/P4ATBTA Bearing’s phenolic cage and chrome steel components offer reliability in demanding conditions. Its extra-light preload makes it suitable for sensitive instrumentation.

Where Is S7028 ACD/P4ATBTA Bearing Used?
S7028 ACD/P4ATBTA Bearing finds its place in medical imaging devices, where precision and low noise are essential. The grease lubrication ensures consistent performance over time.

In industrial automation, S7028 ACD/P4ATBTA Bearing is ideal for high-speed spindles, thanks to its P4A tolerance class. The 25° contact angle provides excellent load distribution.

Built for Heavy-Duty Use: S7028 ACD/P4ATBTA Bearing
S7028 ACD/P4ATBTA Bearing handles heavy loads in wind turbine gearboxes, where durability is critical. The chrome steel construction resists wear even under continuous operation.

For printing machinery, S7028 ACD/P4ATBTA Bearing ensures precise paper handling with minimal vibration. Its sealed design protects against ink and paper dust.

Automotive vs Aerospace: Applications of S7028 ACD/P4ATBTA Bearing
In automotive testing equipment, S7028 ACD/P4ATBTA Bearing provides accurate measurements due to its high precision. The matched set configuration enhances reliability.

For aerospace actuators, S7028 ACD/P4ATBTA Bearing’s temperature range and grease lubrication suit extreme conditions. The phenolic cage reduces friction at high speeds.

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