Manufactured by CHG Bearing, the 61860MB is a precision Deep Groove Ball Bearings. Key dimensional parameters include a 300 mm bore diameter, a 380 mm outer diameter, and a 38 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.
61860MB - Deep Groove Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 61860MB |
| 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) | 300 mm |
| Width (B) | 38 mm |
| Outer Diameter (D) | 380 mm |
| Bore Diameter Tolerance | -0.018 – 0 mm |
| Outside Diameter Tolerance | -0.02 – 0 mm |
| Width Tolerance | -0.35 – 0 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 155 kN |
| Basic Static Load Rating C0 (kN) | 204 kN |
| Material | |
| Mass (kg) | 10.3 kg |
| Ring Material | Bearing Steel |
| Cage Material | Brass |
| Ball Material | Bearing Steel |
61860MB 380 mm 300 mm 38 mm Frequently Asked Questions about 61860MB Deep Groove Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Each 61860MB produced in CHG Bearing manufacturing facilities features accurately profiled corner chamfers complying with DIN 5412 / ISO standard corner radii. When designing mating shafts and housing shoulders, machining an undercut or fillet radius strictly within the inner ring clearance limit (300 mm bore side) ensures perfect planar contact without edge binding.
The Open engineered for 61860MB by CHG Bearing utilizes precision non-contact metal shields or reinforced NBR/FKM contact lip seals. This barrier prevents particulate ingress, washdown fluids, and abrasive dust from reaching the raceways while eliminating grease leakage under centrifugal forces.
To ensure optimum performance of CHG Bearing 61860MB Deep Groove Ball Bearings under general rotational loads, our application engineers advise an inner-ring shaft tolerance of m5 or k5 for the 300 mm bore. For the 380 mm outer ring, an H7 or J7 housing bore fit is recommended to eliminate creep while accommodating normal thermal gradient expansion.
In its sealed configuration (Open), CHG Bearing pre-charges 61860MB with premium wide-temperature lithium-complex or polyurea grease, calibrated to a 30%–35% cavity volume ratio. For open-type variants, synthetic PAO or refined mineral lubricating oils with appropriate EP (Extreme Pressure) additives should be circulated.
