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| Parameter | SKF38880/38820263.525 × 325.438 × mm | TIMKEN38880 / 38820263.525 × 325.438 × 28.575 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | SKF | TIMKEN |
| Designation | 38880/38820 | 38880 / 38820 |
| Product family | Tapered roller bearings | TS - Tapered Single |
| Detailed type | Single row tapered roller bearing | Tapered roller bearings |
| Series | — | 38800 |
| Bore diameterd | 263.525 mm | 263.525 mm |
| Outside diameterD | 325.438 mm | 325.438 mm |
| WidthB | — | 28.575 mm |
| Basic dynamic load ratingC | 273 kN | 221 kN |
| Basic static load ratingC0 | 550 kN | 554 kN |
| Fatigue load limitPu | 48 kN | — |
| Reference speednref | 1400 r/min | — |
| Limiting speednG | 1700 r/min | — |
| Mass≈m | 5.28 kg | 5.2 kg |
| Precision class | — | ABMA Class 2 |
| Sealing | Without | Open |
| Cage | Sheet metal | Steel cage |
| Lubricant | None | — |
| Calculation Factors | ||
| K Factor | — | 1.60 |
| Y1 Factor | — | 1.64 |
| Y2 Factor | — | 0.00 |
| Y0 Factor | — | 0.90 |
| E Factor | — | 0.37 |
| Cg Factor | — | 0.1676 |
| Dimensions | ||
| Width, total | 28.575 mm | — |
| Width, inner ring | 28.575 mm | — |
| Width, outer ring | 25.4 mm | — |
| Contact angle | 13.7 ° | — |
| Engineering — Abutment dimensions | ||
| Diameter of shaft abutmentd a | max. 282 mm | — |
| Diameter of shaft abutmentd b | min. 276.5 mm | — |
| Diameter of housing abutmentD a | max. 313 mm | — |
| Diameter of housing abutmentD b | min. 313 mm | — |
| Minimum width of space required in housing on large side faceC a | min. 4 mm | — |
| Minimum width of space required in housing on small side faceC b | min. 3 mm | — |
| Radius of shaft filletr a | max. 1.5 mm | — |
| Radius of housing filletr b | max. 1.5 mm | — |
| Engineering — Calculation data | ||
| SKF performance class | SKF Explorer | — |
| Limiting valuee | 0.37 | — |
| Calculation factorY | 1.6 | — |
| Calculation factorY 0 | 0.9 | — |
| Engineering — Dimensions | ||
| Bearing width, totalT | 28.575 mm | — |
| Shoulder diameter of inner ringd 1 | ≈ 293.2 mm | — |
| Width of inner ringB | 28.575 mm | — |
| Width of outer ringC | 25.4 mm | — |
| Chamfer dimension of inner ringr 1,2 | min. 1.5 mm | — |
| Chamfer dimension of outer ringr 3,4 | min. 1.5 mm | — |
| Distance side face to pressure pointa | 48.975 mm | — |
| Engineering — Engineering specifications | ||
| Dimension series | 38800 | — |
| Logistics | ||
| Product net weight | 5.28 kg | — |
| eClass code | 23-05-09-10 | — |
| UNSPSC code | 31171516 | — |
| Manufacturer Identity | ||
| Material Number | — | 000000000100384770 |
| World Assembly Part Number | — | 38880_38820 |
| Inner Ring Part Number | — | 38880 |
| Outer Ring Part Number | — | 38820 |
| Drawing Number | — | C-45944 |
| Upc | — | 0013992332554 |
| Official Source System | — | CORE BP - DS DF |
| Official Last Run | — | 2026-08-23T20:02:46.327 |
| 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 | Yes | — |
| Product Identity | ||
| Type Description | — | TS - Tapered Single |
| Construction | — | Single Row Tapered Roller Bearing Assembly | Imperial Series | 10.3750 in Bore | 12.8125 in OD | 1.1250 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 | — |
| Candidate for remanufacturing | Yes | — |
| Indicative carbon footprint for new product | 19.5 kg CO 2 e | — |
| Indicative carbon footprint for remanufactured product | 6.5 kg CO 2 e | — |
| Technical Data | ||
| Overall Width | — | 31.375 mm |
| Radial Rating | — | 57,400 N |
| Axial Rating | — | 35,900 N |
| Dynamic Rating C1 | — | 221,000 N |
| Dynamic Rating C90 | — | 57,400 N |
| Dynamic Axial Rating Ca90 | — | 35,900 N |
| Dynamic Axial Rating Ca1 | — | 139,000 N |
| Static Radial Rating C0 | — | 554,000 N |
| Extended Dynamic Rating Ce | — | 0 N |
| Static Axial Rating C0A | — | 590,000 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.