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| Parameter | SKF2788/2720/QCL7C38.1 × 76.2 × mm | TIMKEN2788A / 272038.1 × 76.2 × 23.812 mm | KOYO2788R/2938.1 × 76.2 × 25.654 mm |
|---|---|---|---|
| Comparable specifications | |||
| Brand | SKF | TIMKEN | KOYO |
| Designation | 2788/2720/QCL7C | 2788A / 2720 | 2788R/29 |
| 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 | — | 2700 | — |
| Bore diameterd | 38.1 mm | 38.1 mm | 38.1 mm |
| Outside diameterD | 76.2 mm | 76.2 mm | 76.2 mm |
| WidthB | — | 23.812 mm | 25.654 mm |
| Basic dynamic load ratingC | 74.8 kN | 86.9 kN | 92.6 kN |
| Basic static load ratingC0 | 93 kN | 102 kN | 92.2 kN |
| Fatigue load limitPu | — | — | 13.8 kN |
| Reference speednref | 6700 r/min | — | — |
| Limiting speednG | 9000 r/min | — | 5400 r/min |
| Mass≈m | 0.51 kg | 0.5 kg | 0.497 kg |
| Precision class | — | ABMA Class 2 | — |
| Sealing | Without | Open | — |
| Cage | Sheet metal | Steel cage | — |
| Lubricant | None | — | — |
| Calculation Factors | |||
| K Factor | — | 1.93 | — |
| Y1 Factor | — | 1.98 | — |
| Y2 Factor | — | 0.00 | — |
| Y0 Factor | — | 1.09 | — |
| E Factor | — | 0.30 | — |
| Cg Factor | — | 0.0725 | — |
| Classification | |||
| Official Category Path | — | — | Tapered roller bearings - Single-row - Inch series |
| Official Classification 1 | — | — | Tapered roller bearings / Single-row / Inch series |
| Dimensions | |||
| Width, total | 25.654 mm | — | — |
| Width, inner ring | 25.654 mm | — | — |
| Width, outer ring | 19.05 mm | — | — |
| Contact angle | 11.4 ° | — | — |
| Logistics | |||
| Product net weight | 0.51 kg | — | — |
| eClass code | 23-05-09-10 | — | — |
| UNSPSC code | 31171516 | — | — |
| Manufacturer Identity | |||
| Material Number | — | 000000000100032133 | — |
| Official Class Key | — | — | 050-010-020 |
| World Assembly Part Number | — | 2788A_2720 | — |
| Inner Ring Part Number | — | 2788A | — |
| Outer Ring Part Number | — | 2720 | — |
| Drawing Number | — | A-20093 | — |
| Upc | — | 0053893790985 | — |
| Official Source System | — | CORE BP - DS DF | — |
| Official Last Run | — | 2026-08-23T20:02:46.307 | — |
| 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 | 1.5000 in Bore | 3.0000 in OD | 0.9375 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 | 1.9 kg CO 2 e | — | — |
| Technical Data | |||
| d | — | — | 76.200 mm |
| T | — | — | 23.812 mm |
| B | — | — | 25.654 mm |
| C | — | — | 19.050 mm |
| Overall Width | — | 28.154 mm | — |
| R(Min.) | — | — | 3.6 mm |
| Radial Rating | — | 22,500 N | — |
| R1(Min.) | — | — | 0.8 mm |
| Axial Rating | — | 11,700 N | — |
| Basic Load Ratings : Cr | — | — | 92.6 kN |
| Dynamic Rating C1 | — | 86,900 N | — |
| Basic Load Ratings : C0R | — | — | 92.2 kN |
| Dynamic Rating C90 | — | 22,500 N | — |
| Fatigue Load Limit : Cu | — | — | 13.8 kN |
| Dynamic Axial Rating Ca90 | — | 11,700 N | — |
| Limiting Speeds(Grease Lub.) | — | — | 5400 min-1 |
| Dynamic Axial Rating Ca1 | — | 45,100 N | — |
| Limiting Speeds(Oil Lub.) | — | — | 7200 min-1 |
| Static Radial Rating C0 | — | 102,000 N | — |
| Load Center Spread : A | — | — | 15.9 mm |
| Extended Dynamic Rating Ce | — | 0 N | — |
| Constant :E | — | — | 0.30 |
| Static Axial Rating C0A | — | 90,300 N | — |
| Axial Load Factors : Y1 | — | — | 1.98 |
| Axial Load Factors : Y0 | — | — | 1.09 |
| Da | — | — | 68.0 mm |
| Db | — | — | 70.0 mm |
| Ra(Max.) | — | — | 3.6 mm |
| Rb(Max.) | — | — | 0.8 mm |
| Mass(Refer.) | — | — | 0.497 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.