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Super Precision Angular Contact Ball Bearings 7228 CDGA/P4A

Super Precision Angular Contact Ball Bearings 7228 CDGA/P4A

The 7228 CDGA/P4A is a super precision angular contact ball bearing with a 140mm bore and 250mm outer diameter, crafted from high-quality chrome steel. It handles radial loads up to 49725 lbf and operates smoothly at speeds up to 11000 RPM.

With a 15° contact angle and extra-light preload, it offers precise performance for demanding applications. The open design and phenolic cage ensure durability and easy maintenance.

This bearing is suitable for temperatures ranging from -30°C to 110°C and comes lubricated for immediate use. It can be paired in back-to-back, face-to-face, or tandem configurations for versatile setups.

Ideal for high-precision machinery like spindles or CNC equipment, it’s interchangeable with SKF bearings. Weighing 8.14kg, it’s robust yet manageable for its size.

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Product Parameters

  • Part Number 7228 CDGA/P4A
  • Brand TFL
  • Interchangeable SKF
  • Bore Dia 140 mm
  • Bore Dia Tolerance -0.004mm to 0
  • Outer Dia 250 mm
  • Outer Dia Tolerance -0.004mm to 0
  • Width 42 mm
  • Width Tolerance -0.2mm to 0
  • Ball Dia 30.162 mm
  • Ball Qty 18
  • Contact Angle 15°
  • Tolerance Class P4A
  • System of Measurement Metric
  • Seal Type Open
  • Matched Arrangement No
  • 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 49725 lbf
  • Static Radial Load 54000 lbf
  • Lubrication Lubricated
  • Temperature Range - 30°C to 110 °C
  • Max Speed 11000 rpm
  • Weight 8.14 kg
Super Precision Angular Contact Ball Bearings 7228 CDGA/P4A dimension drawing
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Features

Performance Features of 7228 CDGA/P4A Bearing

7228 CDGA/P4A Bearing is designed with a 15° contact angle, optimising load distribution for angular contact applications.
The chrome steel rings and balls enhance durability, supporting dynamic radial loads up to 49,725 lbf.

Its phenolic cage ensures smooth operation at high speeds, reaching up to 11,000 rpm.
The extra light preload (Class A) minimises friction, improving efficiency and precision.

With a temperature range of -30°C to 110°C, 7228 CDGA/P4A Bearing performs reliably in varied conditions.
The open design allows easy lubrication, reducing maintenance requirements.

The P4A tolerance class ensures high precision, making it suitable for demanding industrial applications.
Its universal matching capability enables flexible configurations like back-to-back or face-to-face arrangements.

Application

Common Applications of 7228 CDGA/P4A Bearing
In machine tools, 7228 CDGA/P4A Bearing handles high-speed rotations with precision, thanks to its angular contact design. The phenolic cage reduces friction, making it suitable for prolonged use in demanding industrial settings.

Where Is 7228 CDGA/P4A Bearing Used?
You’ll often find 7228 CDGA/P4A Bearing in spindle systems for CNC machines, where its extra-light preload ensures smooth operation. Its chrome steel construction also makes it reliable for heavy radial loads.

Optimized for Performance: 7228 CDGA/P4A Bearing
For robotics, 7228 CDGA/P4A Bearing offers excellent stability in articulated arms, thanks to its P4A tolerance class. The open design allows for easy lubrication, extending its service life.

Automotive vs Aerospace: Applications of 7228 CDGA/P4A Bearing
In automotive transmissions, 7228 CDGA/P4A Bearing supports high-speed shafts, while in aerospace, its precision suits turbine systems. The universal matching feature adds versatility for complex setups.

Essential Roles of 7228 CDGA/P4A Bearing
Medical imaging devices benefit from 7228 CDGA/P4A Bearing’s low vibration and high accuracy. The temperature range ensures consistent performance in both clinical and lab environments.

Q&A

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