Manufactured by CHG Bearing, the C-20498 is a precision Four-Row Tapered Roller Bearings. Key dimensional parameters include a 177.8 mm bore diameter, a 247.65 mm outer diameter, and a 278.638 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.
C-20498 - Four-Row Tapered Roller Bearings
Technical Specifications
| Overview | |
|---|---|
| Part Number | C-20498 |
| Brand | CHG® |
| Characteristics | |
| Bearing Type | Four Row Tapered Roller Bearing |
| Number of Rows | Four Row |
| Tolerance Class | Class 4 |
| Dimensions | |
| Bore Diameter (d) | 177.8 mm |
| Width (B) | 278.638 mm |
| Outer Diameter (D) | 247.65 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 | -0.4 – +0.4 mm |
| Outer Ring Assembly Width | 192.088 mm |
| Outer Ring Assembly Width Tolerance | -0.3 – +0.3 mm |
| Shaft Abutment Diameter | N/A mm |
| Housing Abutment Diameter | N/A mm |
| Lubrication Hole Diameter | 4 mm |
| Performance | |
| Basic Dynamic Load Rating C (kN) | 949 kN |
| Basic Static Load Rating C0 (kN) | 2620 kN |
| Material | |
| Mass (kg) | 28 kg |
| Ring Material | Bearing Steel |
| Rolling Element Material | Bearing Steel |
| Cage Material | Grade 10 Steel |
| Lubrication Groove Width | 9.5 mm |
C-20498 247.65 mm 177.8 mm 278.638 mm Frequently Asked Questions about C-20498 Four-Row Tapered Roller Bearings
Find key technical answers regarding dimensions, specifications, and replacement options for this model.
When fitting C-20498 over a 177.8 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.
The Open Type engineered for C-20498 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.
Yes, 100% of C-20498 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.
Following standard ISO 281 fatigue calculation guidelines, the nominal rating life (L10) of CHG Bearing C-20498 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.
