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| Parameter | SKF3984/2/Q66.675 × × mm | TIMKEN3984 / 392066.675 × 112.712 × 30.162 mm | KOYO3984/2066.675 × 112.713 × 30.048 mm |
|---|---|---|---|
| Comparable specifications | |||
| Brand | SKF | TIMKEN | KOYO |
| Designation | 3984/2/Q | 3984 / 3920 | 3984/20 |
| Product family | Tapered roller bearings | TS - Tapered Single | Automotive bearings |
| Detailed type | Single row tapered roller bearing, cone | Tapered roller bearings | Automotive bearings |
| Series | — | 3900 | — |
| Bore diameterd | 66.675 mm | 66.675 mm | 66.675 mm |
| Outside diameterD | — | 112.712 mm | 112.713 mm |
| WidthB | — | 30.162 mm | 30.048 mm |
| Basic dynamic load ratingC | 123 kN | 139 kN | — |
| Basic static load ratingC0 | 183 kN | 191 kN | — |
| Mass≈m | 0.665 kg | 1.17 kg | 1.15 kg |
| Precision class | — | ABMA Class 2 | — |
| Sealing | Without | Open | — |
| Cage | Sheet metal | Steel cage | — |
| Lubricant | None | — | — |
| Calculation Factors | |||
| K Factor | — | 1.45 | — |
| Y1 Factor | — | 1.49 | — |
| Y2 Factor | — | 0.00 | — |
| Y0 Factor | — | 0.82 | — |
| E Factor | — | 0.40 | — |
| Cg Factor | — | 0.1092 | — |
| Classification | |||
| Official Category Path | — | — | Automotive bearings - Automotive bearings |
| Official Classification 1 | — | — | Automotive bearings |
| Dimensions | |||
| Width, total | 30.048 mm | — | — |
| Width, inner ring | 30.048 mm | — | — |
| Logistics | |||
| Product net weight | 0.665 kg | — | — |
| eClass code | 23-05-09-10 | — | — |
| UNSPSC code | 31171516 | — | — |
| Manufacturer Identity | |||
| Material Number | — | 000000000100059226 | — |
| Official Class Key | — | — | 200-010-000 |
| World Assembly Part Number | — | 3984_3920 | — |
| Inner Ring Part Number | — | 3984 | — |
| Outer Ring Part Number | — | 3920 | — |
| Drawing Number | — | A-5643 | — |
| Upc | — | 0053893652757 | — |
| Official Source System | — | CORE BP - DS DF | — |
| Official Last Run | — | 2026-08-23T20:02:47.27 | — |
| 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 | — |
| Construction | — | Single Row Tapered Roller Bearing Assembly | Imperial Series | 2.6250 in Bore | 4.4375 in OD | 1.1875 in Width | Open | Cylindrical Bore | Steel Cage | Precision ABMA Class 2 | — |
| 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 | 2.5 kg CO 2 e | — | — |
| Technical Data | |||
| Stockno. | — | — | 70218 |
| d | — | — | 112.713 mm |
| B | — | — | 30.048 mm |
| C | — | — | 30.163 mm |
| T | — | — | 23.813 mm |
| Overall Width | — | 33.548 mm | — |
| Mass (Reference) | — | — | 1.15 kg |
| Radial Rating | — | 36,000 N | — |
| Axial Rating | — | 24,800 N | — |
| Dynamic Rating C1 | — | 139,000 N | — |
| Dynamic Rating C90 | — | 36,000 N | — |
| Dynamic Axial Rating Ca90 | — | 24,800 N | — |
| Dynamic Axial Rating Ca1 | — | 95,500 N | — |
| Static Radial Rating C0 | — | 191,000 N | — |
| Extended Dynamic Rating Ce | — | 0 N | — |
| Static Axial Rating C0A | — | 224,000 N | — |
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.