Manufactured by CHG Bearing, the 331249 is a precision Four-Row Tapered Roller Bearings. Key dimensional parameters include a 190.5 mm bore diameter, a 266.7 mm outer diameter, and a 188.912 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.
331249 - Four-Row Tapered Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | 331249 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Four Row Tapered Roller Bearing |
| Number of Rows | Four Row |
| Tolerance Class | Class 4 |
| Dimensions | |
| Bore Diameter (d) | 190.5 mm |
| Width (B) | 188.912 mm |
| Outer Diameter (D) | 266.7 mm |
| Bore Diameter Tolerance | 0 – +0.025 mm |
| Outside Diameter Tolerance | 0 – +0.025 mm |
| Inner Ring Chamfer | 1.5 min mm |
| Outer Ring Chamfer | 3.3 min mm |
| Inner Ring Assembly Width Tolerance | -1.524 – +1.524 mm |
| Outer Ring Assembly Width | 187.325 mm |
| Outer Ring Assembly Width Tolerance | -1.524 – +1.524 mm |
| Shaft Abutment Diameter | 202 mm |
| Housing Abutment Diameter | 246 mm |
| Lubrication Hole Diameter | 4 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 1070 kN |
| Basic Static Load Rating C0 (kN) | 2800 kN |
| Material | |
| Mass (kg) | 32.2 kg |
| Ring Material | Case-Hardened Steel / Bearing Steel |
| Rolling Element Material | Bearing Steel |
| Cage Material | 08Al Steel |
| Lubrication Groove Width | 9.5 mm |
331249 266.7 mm 190.5 mm 188.912 mm Frequently Asked Questions about 331249 Four-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 331249 with a precision bore diameter (d) of 190.5 mm, an outside diameter (D) of 266.7 mm, and a nominal ring width (B) of 188.912 mm. This configuration yields an effective cross-sectional wall thickness of 38.1 mm and an envelope ratio (D/d) of 1.4, delivering compact rigidity for OEM machinery housings.
To safeguard CHG Bearing 331249 against fretting wear and false brinelling during transport or vibration, assemble mating surfaces (190.5 mm x 266.7 mm) using anti-fretting mounting paste. Maintaining strict alignment and avoiding prolonged static vibration will preserve raceway polish.
For international ocean and air freight, CHG Bearing packs 331249 with industrial VCI anti-corrosion barrier wrapping, sealed polybags, individual cartons, and fumigated ocean-worthy wooden crates. This multi-layer barrier guarantees rust-free storage for a minimum shelf life of 24 to 36 months.
Yes, 100% of 331249 Four-Row Tapered Roller Bearings leaving CHG Bearing production lines are subjected to multi-frequency Anderometer sound testing. All units satisfy baseline Z1V1 levels, with dedicated quiet-running electric motor quality (EMQ) lots certified to Z2V2 and Z3V3 standards for silent machinery integration.
