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| Parameter | SKF6389/Q66.675 × × mm | TIMKEN6389 / 632066.675 × 135.755 × 53.975 mm | KOYO6389/2066.675 × 135.755 × 56.007 mm |
|---|---|---|---|
| Comparable specifications | |||
| Brand | SKF | TIMKEN | KOYO |
| Designation | 6389/Q | 6389 / 6320 | 6389/20 |
| Product family | Tapered roller bearings | TS - Tapered Single | Single-row / Inch series |
| Detailed type | Single row tapered roller bearing, cone | Tapered roller bearings | Tapered roller bearings |
| Series | — | 6300 | — |
| Bore diameterd | 66.675 mm | 66.675 mm | 66.675 mm |
| Outside diameterD | — | 135.755 mm | 135.755 mm |
| WidthB | — | 53.975 mm | 56.007 mm |
| Basic dynamic load ratingC | 286 kN | 321 kN | 333 kN |
| Basic static load ratingC0 | 400 kN | 404 kN | 357 kN |
| Fatigue load limitPu | — | — | 49.3 kN |
| Limiting speednG | — | — | 3000 r/min |
| Mass≈m | 2.2 kg | 3.53 kg | 3.52 kg |
| Sealing | Without | — | — |
| Cage | Sheet metal | — | — |
| Lubricant | None | — | — |
| Calculation Factors | |||
| K Factor | — | 1.80 | — |
| Y1 Factor | — | 1.85 | — |
| Y2 Factor | — | -1.00 | — |
| Y0 Factor | — | 1.02 | — |
| E Factor | — | 0.32 | — |
| Cg Factor | — | 0.0827 | — |
| Classification | |||
| Official Category Path | — | — | Tapered roller bearings - Single-row - Inch series |
| Official Classification 1 | — | — | Tapered roller bearings / Single-row / Inch series |
| Dimensions | |||
| Width, total | 56.007 mm | — | — |
| Width, inner ring | 56.007 mm | — | — |
| Logistics | |||
| Product net weight | 2.2 kg | — | — |
| eClass code | 23-05-09-10 | — | — |
| UNSPSC code | 31171516 | — | — |
| Manufacturer Identity | |||
| Material Number | — | 100038956100035689 | — |
| Official Class Key | — | — | 050-010-020 |
| World Assembly Part Number | — | 6389 / 6320 | — |
| Inner Ring Part Number | — | 6389 | — |
| Outer Ring Part Number | — | 6320 | — |
| Official Source System | — | TS_PREPAIR | — |
| Official Last Run | — | 2026-08-23T00:00:00 | — |
| Product identity | |||
| Official product category | Tapered roller bearings | — | — |
| Official taxonomy path | /products/rolling-bearings/roller-bearings/tapered-roller-bearings/single-row-tapered-roller-bearings | — | — |
| Available from SKF | Yes | — | — |
| Remanufacturable | No | — | — |
| Product Identity | |||
| Type Description | — | TS - Tapered Single | — |
| Number Of Rows | — | 1 | — |
| Tapered Bore | — | N | — |
| Properties | |||
| Bearing part | Inner ring, cage and roller assembly (cone assembly) | — | — |
| Bore type | Cylindrical | — | — |
| Arrangement of contact angle (double-row bearing) | Not applicable | — | — |
| Matched arrangement | No | — | — |
| Coating | Without | — | — |
| Relubrication feature | Without | — | — |
| Unit system | Inch | — | — |
| Indicative carbon footprint for new product | 8.1 kg CO 2 e | — | — |
| Technical Data | |||
| d | — | — | 135.755 mm |
| Overall Width | — | 57.307 mm | — |
| T | — | — | 53.975 mm |
| Radial Rating | — | 83,300 N | — |
| B | — | — | 56.007 mm |
| Axial Rating | — | 46,300 N | — |
| C | — | — | 44.450 mm |
| Dynamic Rating C1 | — | 321,000 N | — |
| R(Min.) | — | — | 6.4 mm |
| Dynamic Rating C90 | — | 83,300 N | — |
| R1(Min.) | — | — | 3.2 mm |
| Dynamic Axial Rating Ca90 | — | 46,300 N | — |
| Basic Load Ratings : Cr | — | — | 333 kN |
| Dynamic Axial Rating Ca1 | — | 179,000 N | — |
| Basic Load Ratings : C0R | — | — | 357 kN |
| Static Radial Rating C0 | — | 404,000 N | — |
| Fatigue Load Limit : Cu | — | — | 49.3 kN |
| Extended Dynamic Rating Ce | — | 0 N | — |
| Limiting Speeds(Grease Lub.) | — | — | 3000 min-1 |
| Static Axial Rating C0A | — | 382,000 N | — |
| Limiting Speeds(Oil Lub.) | — | — | 4000 min-1 |
| Load Center Spread : A | — | — | 34.8 mm |
| Constant :E | — | — | 0.32 |
| Axial Load Factors : Y1 | — | — | 1.85 |
| Axial Load Factors : Y0 | — | — | 1.02 |
| Da | — | — | 117.0 mm |
| Db | — | — | 126.0 mm |
| Ra(Max.) | — | — | 6.4 mm |
| Rb(Max.) | — | — | 3.2 mm |
| Mass(Refer.) | — | — | 3.52 kg |
Independent reference comparison based on the manufacturer data currently loaded. Always verify current limits, tolerances and suffix definitions with the official source before engineering selection.