21306 CC
JRZC uses high-purity vacuum-degassed bearing steel as raw material to ensure the quality of CC-type spherical roller bearings from the very beginning. The rings and rollers are treated with Aichelin salt bath heat treatment to guarantee consistent hardness and stable performance. The hardness difference between the bearing rings and rollers is less than 1 HRC, which is 30% stricter than the standard requirement of GB/T 34891-2017.
CC steel cage ensures stable operation and reliable load distribution
Excellent radial load capacity with moderate axial load capability
Optimized internal geometry reduces friction and improves durability
Suitable for continuous operation under varying load and speed conditions
Ideal for fans, pumps, conveyors, light machinery, and industrial equipment
- Dimensions
Bore diameter 30 mm Outside diameter 72 mm Width 19 mm PerformanceBasic dynamic load rating 65.7 kN Basic static load rating 61kN Grease Reference speed 2850 r/min Oil Limiting speed 3900 r/min - Properties
Bore type Cylindrical For Load Direction Radial Number of rows Double row Radial internal clearance CN Tolerance class for dimensions Nomal Tolerance class for run-out P6 Seal type Without Lubricant None Relubrication feature Without - Weight and Material
Product net weight 0.409 kg Roller material Chrome steel Ring Material Chrome steel Cage Stamped steel
The JRZC 21306 CC spherical roller bearing is designed for general industrial applications requiring reliable radial load capacity, moderate axial load support, and stable performance under fluctuating operating conditions. Featuring a CC-type steel cage and optimized internal geometry, this bearing provides smooth rotation, reduced friction, and enhanced durability. Its compact size and robust construction make it suitable for applications where consistent performance, long service life, and dependable operation are essential. It is widely used in fans, pumps, conveyors, gearboxes, and various light-to-medium industrial machinery.
FAQ
Q1: What is the main benefit of the CC cage design?
A1: The CC steel cage provides stable guidance for the rollers, ensuring smooth operation and consistent load distribution.
Q2: What type of applications are suitable for the 21306 CC?
A2: It is commonly used in fans, pumps, conveyors, gearboxes, and general industrial machinery.
Q3: Can this bearing handle axial loads?
A3: Yes, it supports moderate axial loads in addition to its strong radial load capacity.
Q4: Is the 21306 CC suitable for continuous operation?
A4: Yes, its optimized internal design allows reliable performance under continuous or variable operating conditions.
