Manufactured by CHG Bearing, the 71840CM/DB is a precision Double Row Angular Contact Ball Bearings. Key dimensional parameters include a 200 mm bore diameter, a 250 mm outer diameter, and a 48 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.
71840CM/DB - Double Row Angular Contact Ball Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 71840CM/DB |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Double Row Angular Contact Ball Bearing |
| Number of Rows | Double Row |
| Load Direction | Combined |
| Dimensions | |
| Bore Diameter (d) | 200 mm |
| Width (B) | 48 mm |
| Outer Diameter (D) | 250 mm |
| Minimum Chamfer Dimension rmin | 1.5 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 94.9 kN |
| Basic Static Load Rating C0 (kN) | 267 kN |
| Material | |
| Mass (kg) | 5.01 kg |
| Cage Material | Brass |
71840CM/DB 250 mm 200 mm 48 mm Frequently Asked Questions about 71840CM/DB Double Row Angular Contact Ball Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
When fitting 71840CM/DB over a 200 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.
As standard production, CHG Bearing subjects 71840CM/DB 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.
Absolutely. The CHG Bearing 71840CM/DB Double Row Angular Contact Ball Bearings is a 1:1 direct interchange for renowned brands, matching part numbers: SKF 71840CM/DB, FAG 71840CM/DB, NSK 71840CM/DB. It shares identical envelope boundary dimensions, load capacities, and shaft fits, allowing instant drop-in replacement without retrofitting your machinery.
To ensure optimum performance of CHG Bearing 71840CM/DB Double Row Angular Contact Ball Bearings under general rotational loads, our application engineers advise an inner-ring shaft tolerance of m5 or k5 for the 200 mm bore. For the 250 mm outer ring, an H7 or J7 housing bore fit is recommended to eliminate creep while accommodating normal thermal gradient expansion.
