Angular Contact Steel Ball Bearing 7024AC-2RZ DBB
The Angular Contact Steel Ball Bearing 7024AC-2RZ DBB is a high-performance industrial bearing engineered for large-scale machining centers and heavy-duty electric motors. Featuring a significant 120mm bore and 180mm outside diameter, this model is built from premium high-carbon chrome steel to ensure maximum rigidity under combined radial and axial loads. The 'AC' contact angle is specifically optimized for enhanced thrust load capacity, while the 2RZ double rubber non-contact seals provide an excellent balance between high-speed performance (up to 8,700 RPM) and protection against industrial contaminants. As a P4 grade component, it delivers the rotational accuracy and stability necessary for large-bore CNC spindles, ensuring minimal thermal expansion and prolonged machine life.
- Hardened high-carbon chrome steel rings and balls
- 120mm Bore x 180mm OD x 28mm Width
- 2RZ non-contact rubber seals for thermal efficiency
- Enhanced AC contact angle for increased thrust capacity
- Limiting speed of 8,700 RPM (Grease Lubrication)
- Engineered for high-rigidity and low-vibration operation
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 2.10 kg | sealingType: 2RZ (Double non-contact seal) | precisionClass: P4 / DBB |
| INSIDE DIAMETER | 120 mm |
| OUTSIDE DIAMETER | 180 mm |
| WIDTH DIMENSION | 28 mm |
| MAX SPEED GREASE | 8700 RPM |
| BASIC LOAD RATING CR | 54.8 KN |
| BASIC LOAD RATING COR | 61.5 KN |
| BEARING TYPE | Angular Contact Steel Ball |
| BALL MATERIAL | Hardened Chrome Steel (GCR15) |
| RING MATERIAL | High-Carbon Steel |
Industrial Applications
| Usage Scenario | Target Industry |
|---|---|
| Large-Scale CNC Spindle Assemblies | Machine Tool Manufacturing |
| Heavy-Duty Industrial Motors and Generators | Steel and Metal Processing |
| Vertical and Horizontal Machining Center Spindles | Automotive and Heavy Engineering |
| Industrial Gearboxes and Power Transmissions | Aerospace Manufacturing |
| Aerospace and Defense Test Rigs | General Industrial Automation |
| Precision Rolling Mill Equipment | General Engineering |
Technical FAQ & Operational Guide
What is the speed limit for the 7024AC-2RZ DBB bearing?
This large-bore precision bearing is rated for a grease-lubricated limiting speed of 8,700 RPM, optimized for heavy-duty industrial spindles.
What is the advantage of the AC contact angle in this 120mm model?
The AC contact angle provides higher axial stiffness and load capacity compared to the standard C-type angle, making it ideal for spindles that encounter significant thrust during heavy machining.
What are the exact dimensions for the 7024 model?
The 7024AC-2RZ DBB has an inside diameter of 120mm, an outside diameter of 180mm, and a width of 28mm.
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