618/750 MA
618 & 619 Series Thin Section Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Performance
Materials
Environment & Compliance
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
618/750 MA Bearing Product Overview & Core Advantages
The 618/750 MA is a single row deep groove ball bearing engineered for exceptional performance in demanding industrial applications. This metric series bearing features a large bore diameter of 750 mm, making it ideal for heavy-duty machinery requiring robust radial load support. Its open design allows for versatile lubrication options, while the P6 tolerance class ensures high running accuracy and precision. Constructed from high-grade chrome steel with a stainless steel cage, it offers superior durability and reliable operation within a wide temperature range.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 618 | Series designation for extra light, wide series deep groove ball bearings. |
| 750 | Bore diameter in millimeters (750 mm). |
| MA | Cage type designation, indicating a machined brass cage for high strength and excellent guidance at moderate speeds. |
618/750 MA Bearing Structural Features & Performance Benefits
- High Load Capacity: Engineered with a deep groove raceway and optimized internal geometry, this bearing is designed to support high radial dynamic load ratings (118,474 lbf) and radial static load ratings (281,011 lbf), making it suitable for heavy radial loads.
- Precision & Stability: Manufactured to a P6 tolerance class, it guarantees tight dimensional control and high running accuracy, which is critical for applications requiring minimal vibration and precise shaft positioning.
- Robust Construction: The combination of chrome steel rings and balls provides high wear resistance and fatigue life. The machined brass (MA) cage ensures reliable ball guidance and dimensional stability under demanding conditions.
- Standard Internal Clearance: The CN radial internal clearance is the standard for general applications, providing a balance between fit and operational temperature rise.
- Versatile Application Range: With an operational temperature range of -30°C to 120°C and an open seal type, it can be used with various lubricants to suit specific environmental and speed requirements.
618/750 MA Bearing Typical Application Areas
The 618/750 MA deep groove ball bearing is commonly specified in heavy industrial machinery where large shaft diameters and high radial load capacity are paramount. Key application areas include:
- Large Electric Motors and Generators
- Industrial Gearboxes and heavy-duty power transmission systems
- Mining and Construction Equipment
- Vibrating Screens and other processing machinery
- Pulp and Paper Machinery
