Manufactured by CHG Bearing, the 618/750MA-1 is a precision Deep Groove Ball Bearings. Key dimensional parameters include a 750 mm bore diameter, a 920 mm outer diameter, and a 78 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.
618/750MA-1 - Deep Groove Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 618/750MA-1 |
| 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) | 750 mm |
| Width (B) | 78 mm |
| Outer Diameter (D) | 920 mm |
| Bore Diameter Tolerance | -0.04 – 0 mm |
| Outside Diameter Tolerance | -0.04 – 0 mm |
| Width Tolerance | -0.75 – 0 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 441 kN |
| Basic Static Load Rating C0 (kN) | 934 kN |
| Material | |
| Mass (kg) | 105 kg |
| Ring Material | Bearing Steel |
| Cage Material | Brass |
| Ball Material | Bearing Steel |
618/750MA-1 920 mm 750 mm 78 mm Frequently Asked Questions about 618/750MA-1 Deep Groove Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
As standard production, CHG Bearing subjects 618/750MA-1 to precision bainite or martensite quenching, offering dimensional stability up to 120°C (248°F). For high-heat processing equipment, CHG Bearing also supplies custom S0 (150°C), S1 (200°C), or S2 (250°C) stabilization heat treatments upon request to prevent residual austenite transformation.
Following standard ISO 281 fatigue calculation guidelines, the nominal rating life (L10) of CHG Bearing 618/750MA-1 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.
When fitting 618/750MA-1 over a 750 mm shaft, CHG Bearing strictly recommends uniform induction heating (controlled between 90°C and 110°C) or precision hydraulic press sleeves. Under no circumstances should direct impact blows be struck against the rings or cage, as shock loads cause brinelling indents and premature spalling.
Standard batches of CHG Bearing 618/750MA-1 conform strictly to ISO Class Normal (ABEC-1). For high-precision machine tool spindles, gearboxes, or robotics requiring tighter runouts, CHG Bearing can provide custom batches graded to ISO Class 6 (P6/ABEC-3) or ISO Class 5 (P5/ABEC-5) with 100% micrometer verification.
