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Super Precision Angular Contact Ball Bearings 7028 CDGB/P4A

Super Precision Angular Contact Ball Bearings 7028 CDGB/P4A

The 7028 CDGB/P4A is a super precision angular contact ball bearing with a 140mm bore and 210mm outer diameter, crafted from durable chrome steel. It handles radial loads up to 34425 lbf and operates smoothly at speeds up to 6300 RPM.

With a 15° contact angle and light preload, it offers excellent stability for high-precision applications. The open design and phenolic cage ensure reliable performance under demanding conditions.

This bearing is ideal for machine tools or spindle systems where accuracy is crucial. It can be arranged back-to-back, face-to-face, or tandem, providing flexibility for various setups.

Weighing 3.42kg, it’s robust yet manageable for its size. Compliant with P4A tolerance standards, it ensures precise operation in temperatures from -30°C to 110°C.

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Product Parameters

  • Part Number 7028 CDGB/P4A
  • 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 33 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 Open
  • Matched Arrangement No
  • Number Of Bearings In Matched Set 3
  • Universal Matching Bearing Yes, back-to-back (<>), face-to-face (><) or tandem (>>)
  • Preload Light / Class B
  • For Load Direction Angular Contact
  • Ring Material Chrome Steel
  • Ball Material Chrome Steel
  • Cage Material Phenolic
  • Dynamic Radial Load 34425 lbf
  • Static Radial Load 37350 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 6300 rpm
  • Weight 3.42 kg
Super Precision Angular Contact Ball Bearings 7028 CDGB/P4A dimension drawing
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Features

Performance Features of 7028 CDGB/P4A Bearing

7028 CDGB/P4A Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
Its chrome steel construction ensures durability and resistance to wear under high radial loads.

The phenolic cage maintains ball alignment, reducing friction and enhancing smooth operation.
With a dynamic radial load capacity of 34425 lbf, it handles demanding conditions reliably.

7028 CDGB/P4A Bearing operates efficiently at speeds up to 6,300 rpm, balancing performance and longevity.
Its P4A tolerance class guarantees precision, making it suitable for high-accuracy applications.

The open design allows for easy lubrication, ensuring consistent performance over time.
Its universal matching capability offers flexibility in various mounting configurations.

Application

Essential Roles of 7028 CDGB/P4A Bearing
In high-precision machine tools, 7028 CDGB/P4A Bearing excels with its 15° contact angle, ensuring smooth rotation under radial and axial loads. The phenolic cage reduces friction, making it ideal for long operational cycles.

Where Is 7028 CDGB/P4A Bearing Used?
You’ll often spot 7028 CDGB/P4A Bearing in automotive transmissions, where its light preload enhances gear shifting accuracy. Its chrome steel construction also handles the high speeds typical in performance vehicles.

Optimized for Performance: 7028 CDGB/P4A Bearing
For robotics, 7028 CDGB/P4A Bearing’s P4A tolerance class guarantees precise movement in articulated arms. The open design simplifies lubrication, extending service life in automated systems.

Medical vs Industrial: Where 7028 CDGB/P4A Bearing Excels
In medical imaging devices, 7028 CDGB/P4A Bearing’s low vibration ensures clear scans, while its industrial use in pumps benefits from the high dynamic load capacity. The universal matching option adds flexibility for custom setups.

Q&A

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