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.
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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
“34306” 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 | SKF34306/3447877.788 × 121.442 × mm | TIMKEN34306 / 3447877.788 × 121.442 × 24.608 mm | KOYO34306/47877.788 × 121.442 × 23.012 mm |
|---|---|---|---|
| Comparable specifications | |||
| Brand | SKF | TIMKEN | KOYO |
| Designation | 34306/34478 | 34306 / 34478 | 34306/478 |
| Product family | Tapered roller bearings | TS - Tapered Single | Single-row / Inch series |
| Detailed type | Single row tapered roller bearing | Tapered roller bearings | Tapered roller bearings |
| Series | — | 34000 | — |
| Bore diameterd | 77.788 mm | 77.788 mm | 77.788 mm |
| Outside diameterD | 121.442 mm | 121.442 mm | 121.442 mm |
| WidthB | — | 24.608 mm | 23.012 mm |
| Basic dynamic load ratingC | 115 kN | 121 kN | 113 kN |
| Basic static load ratingC0 | 134 kN | 136 kN | 127 kN |
| Fatigue load limitPu | 15.3 kN | — | 19.4 kN |
| Reference speednref | 4300 r/min | — | — |
| Limiting speednG | 5300 r/min | — | 3000 r/min |
| Mass≈m | 0.924 kg | 0.9 kg | 0.896 kg |
| Precision class | — | ABMA Class 2 | — |
| Sealing | Without | Open | — |
| Cage | Sheet metal | Steel cage | — |
| Lubricant | None | — | — |
| Calculation Factors | |||
| K Factor | — | 1.30 | — |
| Y1 Factor | — | 1.33 | — |
| Y2 Factor | — | 0.00 | — |
| Y0 Factor | — | 0.73 | — |
| E Factor | — | 0.45 | — |
| Cg Factor | — | 0.1093 | — |
| Classification | |||
| Official Category Path | — | — | Tapered roller bearings - Single-row - Inch series |
| Official Classification 1 | — | — | Tapered roller bearings / Single-row / Inch series |
| Dimensions | |||
| Width, total | 24.608 mm | — | — |
| Width, inner ring | 23.012 mm | — | — |
| Width, outer ring | 17.462 mm | — | — |
| Contact angle | 16.7 ° | — | — |
| Engineering — Abutment dimensions | |||
| Diameter of shaft abutmentd a | max. 88 mm | — | — |
| Diameter of shaft abutmentd b | min. 91.5 mm | — | — |
| Diameter of housing abutmentD a | max. 112 mm | — | — |
| Diameter of housing abutmentD b | min. 114 mm | — | — |
| Minimum width of space required in housing on large side faceC a | min. 3 mm | — | — |
| Minimum width of space required in housing on small side faceC b | min. 7 mm | — | — |
| Radius of shaft filletr a | max. 3.5 mm | — | — |
| Radius of housing filletr b | max. 2 mm | — | — |
| Engineering — Calculation data | |||
| SKF performance class | SKF Explorer | — | — |
| Limiting valuee | 0.46 | — | — |
| Calculation factorY | 1.3 | — | — |
| Calculation factorY 0 | 0.7 | — | — |
| Engineering — Dimensions | |||
| Bearing width, totalT | 24.608 mm | — | — |
| Shoulder diameter of inner ringd 1 | ≈ 97.8 mm | — | — |
| Width of inner ringB | 23.012 mm | — | — |
| Width of outer ringC | 17.462 mm | — | — |
| Chamfer dimension of inner ringr 1,2 | min. 3.5 mm | — | — |
| Chamfer dimension of outer ringr 3,4 | min. 2 mm | — | — |
| Distance side face to pressure pointa | 25.959 mm | — | — |
| Engineering — Engineering specifications | |||
| Dimension series | 34000 | — | — |
| Logistics | |||
| Product net weight | 0.924 kg | — | — |
| eClass code | 23-05-09-10 | — | — |
| UNSPSC code | 31171516 | — | — |
| Manufacturer Identity | |||
| Material Number | — | 000000000100042520 | — |
| Official Class Key | — | — | 050-010-020 |
| World Assembly Part Number | — | 34306_34478 | — |
| Inner Ring Part Number | — | 34306 | — |
| Outer Ring Part Number | — | 34478 | — |
| Drawing Number | — | A-12441 | — |
| Upc | — | 0053893656915 | — |
| Official Source System | — | CORE BP - DS DF | — |
| Official Last Run | — | 2026-08-23T20:02:47.067 | — |
| Product identity | |||
| Official product category | Tapered roller bearings | — | — |
| Official taxonomy path | /products/rolling-bearings/roller-bearings/tapered-roller-bearings/single-row-tapered-roller-bearings | — | — |
| Structure group ID | BT1_001_101 | — | — |
| Available from SKF | Yes | — | — |
| Remanufacturable | No | — | — |
| Product Identity | |||
| Type Description | — | TS - Tapered Single | — |
| Construction | — | Single Row Tapered Roller Bearing Assembly | Imperial Series | 3.0625 in Bore | 4.7812 in OD | 0.9688 in Width | Open | Cylindrical Bore | Steel Cage | Precision ABMA Class 2 | — |
| Number Of Rows | 1 | 1 | — |
| Tapered Bore | — | N | — |
| Properties | |||
| Bearing part | Complete bearing | — | — |
| Locating feature, bearing outer ring | Without | — | — |
| 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 | 3.4 kg CO 2 e | — | — |
| Technical Data | |||
| d | — | — | 121.442 mm |
| T | — | — | 24.608 mm |
| B | — | — | 23.012 mm |
| C | — | — | 17.462 mm |
| Overall Width | — | 27.812 mm | — |
| R(Min.) | — | — | 3.6 mm |
| Radial Rating | — | 31,400 N | — |
| R1(Min.) | — | — | 2.0 mm |
| Axial Rating | — | 24,200 N | — |
| Basic Load Ratings : Cr | — | — | 113 kN |
| Dynamic Rating C1 | — | 121,000 N | — |
| Basic Load Ratings : C0R | — | — | 127 kN |
| Dynamic Rating C90 | — | 31,400 N | — |
| Fatigue Load Limit : Cu | — | — | 19.4 kN |
| Dynamic Axial Rating Ca90 | — | 24,200 N | — |
| Limiting Speeds(Grease Lub.) | — | — | 3000 min-1 |
| Dynamic Axial Rating Ca1 | — | 93,500 N | — |
| Limiting Speeds(Oil Lub.) | — | — | 4000 min-1 |
| Static Radial Rating C0 | — | 136,000 N | — |
| Load Center Spread : A | — | — | 26.8 mm |
| Extended Dynamic Rating Ce | — | 0 N | — |
| Constant :E | — | — | 0.45 |
| Static Axial Rating C0A | — | 179,000 N | — |
| Axial Load Factors : Y1 | — | — | 1.33 |
| Axial Load Factors : Y0 | — | — | 0.73 |
| Da | — | — | 110.0 mm |
| Db | — | — | 116.0 mm |
| Ra(Max.) | — | — | 3.6 mm |
| Rb(Max.) | — | — | 2.0 mm |
| Mass(Refer.) | — | — | 0.896 kg |
Automatic matching is a search aid, not an interchangeability declaration. Confirm the full suffix, tolerances, internal design and application limits before substitution.