7016 CDGA/VQ253
7000 Series Super Precision Angular Contact Ball Bearings
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7016 CDGA/VQ253 Bearing Product Overview & Core Advantages
The 7016 CDGA/VQ253 is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. As a single bearing from a universally matchable (SU) set of three, it is engineered to accommodate combined loads, specifically high radial loads and axial loads in one direction. Its defining characteristics include an Extra light (Class A) preload for minimal deflection under load, a P4A tolerance class for superior running accuracy, and a phenolic cage enabling high-speed operation. This bearing is the ideal choice for machine tool spindles and other high-performance machinery where precision, high rigidity, and reliability are paramount.
7016 CDGA/VQ253 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7016 | Basic bearing designation indicating a metric angular contact ball bearing with an 80 mm bore and 125 mm outside diameter. |
| CDGA | Signifies a specific internal design with a 15° contact angle and Extra light preload (Class A). This combination is optimized for high-speed, high-precision applications requiring maximum rigidity. |
| VQ253 | Indicates the bearing is lubricated with a specific high-performance grease suitable for the designated temperature range of -30°C to 110°C. |
7016 CDGA/VQ253 Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The P4A tolerance class ensures extremely tight dimensional and running accuracy, which is critical for applications like machine tool spindles. The Extra light preload eliminates internal clearance, providing superior system stiffness and minimizing deflection under operational loads.
- Optimized for High Speeds: The lightweight phenolic cage reduces centrifugal forces, allowing the bearing to achieve a high limiting speed of 17,000 rpm. The 15° contact angle offers an excellent balance between radial load capacity and high-speed capability.
- Superior Load Capacity: Engineered with a high dynamic load rating of 14,625 lbf, this bearing is capable of handling significant combined loads (radial and one-direction axial loads) throughout its service life.
- Ready-to-Install: The bearing is supplied pre-lubricated, ensuring immediate operational readiness and optimal performance from startup.
7016 CDGA/VQ253 Bearing Typical Application Areas
- Machine Tool Spindles: For milling, grinding, and turning centers where high speed, accuracy, and rigidity are non-negotiable.
- Precision Grinding Spindles: Demanding the ultimate in running accuracy and smooth operation.
- High-Frequency Motors and Spindles: Applications that operate at very high rotational speeds.
- Other Precision Rotary Equipment: Including high-speed pumps, compressors, and specialized instrumentation.