Angular Contact Steel Ball Bearing 7005C-2RZ DBB
The Angular Contact Steel Ball Bearing 7005C-2RZ DBB is a high-precision component engineered for high-performance industrial applications. Featuring a 25mm bore and 47mm outside diameter, this bearing is constructed from premium high-carbon chrome steel to ensure maximum structural rigidity and fatigue resistance. The 'C' contact angle is specifically optimized for ultra-high-speed stability, making it an ideal choice for high-frequency CNC spindles and robotic arm joints. Its 2RZ double rubber non-contact seals enable a remarkable grease-lubricated limiting speed of 45,800 RPM while maintaining low friction and providing a reliable barrier against dust. Certified to P4 precision standards, it provides the rotational accuracy and minimal vibration required for high-finish machining and precision instrumentation.
- Hardened high-carbon chrome steel rings and balls
- 25mm Bore x 47mm OD x 12mm Width
- 2RZ non-contact rubber seals for thermal efficiency
- Optimized C-type contact angle for high-speed operation
- Limiting speed of 45,800 RPM (Grease Lubrication)
- P4 Precision grade for industrial machining accuracy
Comparative Technical Spindle Motor Configurations Matrix
Use the structural data catalog matrix below to evaluate power outputs, maximum RPM, operating voltages, and cooling styles across standard TriQuench CNC spindle models.
| Spindle Capacity | Operating Speed | Operating Voltage | Cooling System |
|---|---|---|---|
| 12.0 kW | 18,000 RPM | 380 V | Water-Cooled |
| 0.8 kW | 24,000 RPM | 220 V | Air-Cooled (Long Shaft) |
| 3.7 kW | 40,000 RPM | 380 V | Water-Cooled ISO20 |
| 9.0 kW | 18,000 RPM | 380 V | Air-Cooled |
Technical Specifications
| Technical Parameter | Engineering Specification Value |
|---|---|
| MECHANICAL | weight: approx 0.08 kg | sealingType: 2RZ (Double non-contact seal) | precisionClass: P4 / DBB |
| INSIDE DIAMETER | 25 mm |
| OUTSIDE DIAMETER | 47 mm |
| WIDTH DIMENSION | 12 mm |
| MAX SPEED GREASE | 45800 RPM |
| BASIC LOAD RATING CR | 8.4 KN |
| BASIC LOAD RATING COR | 4.8 KN |
| BEARING TYPE | Angular Contact Steel Ball |
| BALL MATERIAL | Hardened Chrome Steel (GCR15) |
| RING MATERIAL | High-Carbon Steel |
Industrial Applications
| Usage Scenario | Target Industry |
|---|---|
| High-Speed CNC Spindle Assemblies | Industrial Automation and Robotics |
| Precision Robotic Arm Joints and Actuators | Machine Tool Manufacturing |
| High-Frequency Electric Motors | Automotive and Heavy Engineering |
| Vertical and Horizontal Machining Centers | Electronics and PCB Machining |
| Automotive Sensors and Performance Micro-Motors | General Precision Engineering |
| Precision Laboratory and Scientific Instruments | General Engineering |
Technical FAQ & Operational Guide
What is the speed limit for the 7005C-2RZ DBB bearing?
This precision bearing is designed for a grease-lubricated limiting speed of up to 45,800 RPM, making it excellent for high-frequency spindles.
What does the 2RZ seal indicate for this 25mm model?
The 2RZ refers to double non-contact rubber seals. They protect the bearing from contaminants without creating the friction and heat of a contact seal, preserving the bearing's maximum RPM capability.
What are the exact dimensions of the 7005 model?
The 7005C-2RZ DBB features an inside diameter of 25mm, an outside diameter of 47mm, and a width of 12mm.
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