Manufactured by CHG Bearing, the 618/1140MA is a precision Deep Groove Ball Bearings. Key dimensional parameters include a 1140 mm bore diameter, a 1380 mm outer diameter, and a 106 mm overall width. This component is designed to meet standard load requirements and ensure consistent operational performance. For comprehensive technical evaluation, please explore the detailed specifications, dimensional data, product images, and CAD drawings provided below. A complete PDF data sheet is also readily available for direct download to support your engineering and procurement needs.
618/1140MA - Deep Groove Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 618/1140MA |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Deep Groove Ball Bearing |
| Seal Type | Open |
| Number of Rows | Single Row |
| Tolerance Class | P5 |
| Load Direction | Radial |
| Dimensions | |
| Bore Diameter (d) | 1140 mm |
| Width (B) | 106 mm |
| Outer Diameter (D) | 1380 mm |
| Bore Diameter Tolerance | -0.065 – 0 mm |
| Outside Diameter Tolerance | -0.065 – 0 mm |
| Width Tolerance | -1.25 – 0 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 858 kN |
| Basic Static Load Rating C0 (kN) | 2390 kN |
| Material | |
| Mass (kg) | 324 kg |
| Ring Material | Bearing Steel |
| Cage Material | Brass |
| Ball Material | Bearing Steel |
618/1140MA 1380 mm 1140 mm 106 mm Frequently Asked Questions about 618/1140MA Deep Groove Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Following standard ISO 281 fatigue calculation guidelines, the nominal rating life (L10) of CHG Bearing 618/1140MA correlates its dynamic capacity (standard dynamic) with equivalent dynamic loads. In controlled industrial settings with proper contamination-free filtration, field data confirms continuous operational longevity exceeding 20,000 to 50,000 service hours.
To ensure optimum performance of CHG Bearing 618/1140MA Deep Groove Ball Bearings under general rotational loads, our application engineers advise an inner-ring shaft tolerance of m5 or k5 for the 1140 mm bore. For the 1380 mm outer ring, an H7 or J7 housing bore fit is recommended to eliminate creep while accommodating normal thermal gradient expansion.
Sourcing 618/1140MA directly from CHG Bearing eliminates intermediate brokerage markups while granting you factory-direct engineering backup, rigorous ISO-certified quality assurance, competitive volume wholesale pricing, and dependable supply chain stability for Deep Groove Ball Bearings.
Engineered according to international ISO boundary plans, CHG Bearing supplies 618/1140MA with a precision bore diameter (d) of 1140 mm, an outside diameter (D) of 1380 mm, and a nominal ring width (B) of 106 mm. This configuration yields an effective cross-sectional wall thickness of 120.0 mm and an envelope ratio (D/d) of 1.21, delivering compact rigidity for OEM machinery housings.
