Manufactured by CHG Bearing, the H239649/H239612CD is a precision Double Row Tapered Roller Bearings. Key dimensional parameters include a 187.325 mm bore diameter, a 320.675 mm outer diameter, and a 185.738 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.
H239649/H239612CD - Double Row Tapered Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | H239649/H239612CD |
| Brand | CHG® |
| Bearing | Double Row Tapered Roller Bearing |
| Characteristics | |
| Series | 370000 |
| Number of Rows | Double Row |
| Tolerance Class | P0 |
| Dimensions | |
| Bore Diameter (d) | 187.325 mm |
| Width (B) | 185.738 mm |
| Outer Diameter (D) | 320.675 mm |
| Bore Diameter Tolerance | -0.075 – 0 mm |
| Outside Diameter Tolerance | -0.125 – 0 mm |
| Inner Ring Chamfer | 7.5 mm |
| Outer Ring Chamfer | 7.5 mm |
| Inner Ring Assembly Width Tolerance | -0.75 – 0 mm |
| Outer Ring Assembly Width | 336 mm |
| Outer Ring Assembly Width Tolerance | -0.50 – 0 mm |
| Shaft Abutment Diameter | 772 mm |
| Housing Abutment Diameter | 1054 mm |
| Lubrication Hole Diameter | 12 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 10500 kN |
| Basic Static Load Rating C0 (kN) | 22800 kN |
| Material | |
| Mass (kg) | 1260 kg |
| Ring Material | Case-Hardened Steel / Bearing Steel |
| Cage Material | 08Al Steel / Grade 10 Steel |
| Lubrication Groove Width | 32 mm |
| Roller Material | Case-Hardened Steel / Bearing Steel |
H239649/H239612CD 320.675 mm 187.325 mm Frequently Asked Questions about H239649/H239612CD Double Row Tapered Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
Engineered according to international ISO boundary plans, CHG Bearing supplies H239649/H239612CD with a precision bore diameter (d) of 187.325 mm, an outside diameter (D) of 320.675 mm, and a nominal ring width (B) of 185.738 mm. This configuration yields an effective cross-sectional wall thickness of 66.7 mm and an envelope ratio (D/d) of 1.71, delivering compact rigidity for OEM machinery housings.
Beyond standard alloy steel, CHG Bearing can customize the H239649/H239612CD Double Row Tapered Roller Bearings using AISI 440C stainless steel, black oxide coating, zinc-nickel plating, or hybrid ceramic (Si3N4) balls for applications involving chemical exposure, marine salt fog, or galvanic current hazards.
To ensure optimum performance of CHG Bearing H239649/H239612CD Double Row Tapered Roller Bearings under general rotational loads, our application engineers advise an inner-ring shaft tolerance of m5 or k5 for the 187.325 mm bore. For the 320.675 mm outer ring, an H7 or J7 housing bore fit is recommended to eliminate creep while accommodating normal thermal gradient expansion.
To safeguard CHG Bearing H239649/H239612CD against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (187.325 mm x 320.675 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
