7207 CDGC/P4A

7200 & 7300 Series Super Precision Angular Contact Ball Bearings

7207 CDGC/P4A 7200 & 7300 Series Super Precision Angular Contact Ball Bearings
7207 CDGC/P4A 7200 & 7300 Series Super Precision Angular Contact Ball Bearings

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Part No.
Part No. 7207 CDGC/P4A

Basic Information

System of measurement Metric
Weight 0.28 kg
Tolerance class P4A
Seal type Open
For load direction Angular Contact

Main Dimensions

Bore diameter 35 mm
Bore diameter tolerance -0.004mm to 0
Outside diameter 72 mm
Outside diameter tolerance -0.004mm to 0
Width 17 mm
Width tolerance -0.2mm to 0
Contact angle 15 °

Ball & Washer Dimensions

Ball diameter 11.112 mm
Ball quantity 13

Performance

Temperature range - 30°C to 110 °C
Radial dynamic load rating 7178 lbf
Radial static load rating 4860 lbf
Limiting speed 41 X 1000 rpm
Lubrication Lubricated
Matched arrangement Single
Number of bearings in matched set 3
Universal matching bearing Universal Matchable (SU)
Preload Moderate / Class C

Materials

Ring material Chrome Steel
Ball material Chrome Steel
Cage material Phenolic
Technical Drawings No drawings available at the moment, will be launched soon
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7207 CDGC/P4A Bearing Product Overview & Core Advantages

The 7207 CDGC/P4A is a single-row angular contact ball bearing engineered for applications demanding high precision and moderate preload. Operating under P4A tolerance class, it delivers exceptional dimensional accuracy and running precision. Its key advantage lies in its ability to support combined loads (radial and axial) simultaneously, making it ideal for high-speed spindles and precision machinery requiring superior rotational accuracy and rigidity.

7207 CDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention

  • 7207: Basic designation indicating a medium series bearing with a 35mm bore and 72mm outside diameter.
  • CD: Represents a 15° contact angle and signifies that the bearing is part of a Universal Matchable (SU) set. This allows for precise preload control when mounted in pairs.
  • GC: Indicates a Moderate Preload / Class C. This pre-set internal clearance provides high rigidity and optimal performance for the intended application.
  • P4A: Denotes an extremely high precision tolerance class, exceeding ABEC 7 standards, which ensures minimal runout and vibration for superior performance.

7207 CDGC/P4A Bearing Structural Features & Performance Benefits

The performance of the 7207 CDGC/P4A is derived from its meticulous construction. The phenolic resin cage offers excellent dimensional stability and low friction, contributing to the high limiting speed of 41,000 rpm. The 15° contact angle is optimized to handle significant axial loads in one direction while accommodating radial loads. Being universally matchable, these bearings can be paired in various configurations (back-to-back, face-to-face, or tandem) to achieve specific stiffness and load-carrying requirements. The P4A precision ensures minimal vibration and heat generation, which is critical for the longevity and accuracy of the entire system.

7207 CDGC/P4A Bearing Typical Application Areas

This high-precision angular contact bearing is predominantly used in:

  • Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
  • Precision Gearboxes: Where accurate shaft positioning and high rigidity are paramount.
  • High-Frequency Motors and Spindle Drives.
  • Medical Equipment and Laboratory Apparatus requiring quiet and precise operation.
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