Cross-brand designation analysis
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Same-model Comparison
Explore products that share a base designation across loaded brands, with dimensional agreement and data gaps shown clearly.
Automatic candidate selection
One base designation across loaded brands
Exact designations rank first. Dimensions, suffixes and other technical differences remain visible so the result is not mistaken for an interchangeability declaration.
Dimensions differ
“3984” across 3 loaded brands
The base designation is shared, but the loaded boundary dimensions do not agree. Use Custom Compare when you want to choose exact suffix variants yourself.
Technical comparison
Choose exact variants instead →Brand differences at a glance
| 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 | — |
Automatic matching is a search aid, not an interchangeability declaration. Confirm the full suffix, tolerances, internal design and application limits before substitution.