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| Parameter | SKFLM 283649/610/HA1749.3 × 990.6 × mm | TIMKENLM283649H-904B6749.3 × 990.6 × 159.5 mm | KOYOLM283649D/610/610D749.3 × 990.6 × 605 mm |
|---|---|---|---|
| Comparable specifications | |||
| Brand | SKF | TIMKEN | KOYO |
| Designation | LM 283649/610/HA1 | LM283649H-904B6 | LM283649D/610/610D |
| Product family | Tapered roller bearings | TS - Tapered Single | Four-row tapered roller bearings |
| Detailed type | Single row tapered roller bearing | Tapered roller bearings | Rolling mill roll neck bearings |
| Series | — | LM283600 | — |
| Bore diameterd | 749.3 mm | 749.3 mm | 749.3 mm |
| Outside diameterD | 990.6 mm | 990.6 mm | 990.6 mm |
| WidthB | — | 159.5 mm | 605 mm |
| Basic dynamic load ratingC | 4903 kN | 5130 kN | 16800 kN |
| Basic static load ratingC0 | 12000 kN | 13200 kN | 47700 kN |
| Fatigue load limitPu | 750 kN | — | 3560 kN |
| Reference speednref | 340 r/min | — | — |
| Limiting speednG | 450 r/min | — | — |
| Mass≈m | 335 kg | 321.9 kg | 1320 kg |
| Precision class | — | ABMA Class 4 | — |
| Sealing | Without | Open | — |
| Cage | Sheet metal | Steel cage | — |
| Lubricant | None | — | — |
| Calculation Factors | |||
| K Factor | — | 1.76 | — |
| Y1 Factor | — | 1.80 | — |
| Y2 Factor | — | 0.00 | — |
| Y0 Factor | — | 0.99 | — |
| E Factor | — | 0.33 | — |
| Cg Factor | — | 0.3514 | — |
| Classification | |||
| Official Category Path | — | — | Rolling mill roll neck bearings - Four-row tapered roller bearings |
| Official Classification 1 | — | — | Rolling mill roll neck bearings / Four-row tapered roller bearings |
| Dimensions | |||
| Width, total | 160.338 mm | — | — |
| Width, inner ring | 160.338 mm | — | — |
| Width, outer ring | 123.0 mm | — | — |
| Contact angle | 12.5 ° | — | — |
| Engineering — Abutment dimensions | |||
| Diameter of shaft abutmentd a | max. 793 mm | — | — |
| Diameter of shaft abutmentd b | min. 781 mm | — | — |
| Diameter of housing abutmentD a | max. 958 mm | — | — |
| Diameter of housing abutmentD b | min. 953 mm | — | — |
| Minimum width of space required in housing on large side faceC a | min. 22 mm | — | — |
| Minimum width of space required in housing on small side faceC b | min. 36.6 mm | — | — |
| Radius of shaft filletr a | max. 6 mm | — | — |
| Radius of housing filletr b | max. 6 mm | — | — |
| Engineering — Calculation data | |||
| Limiting valuee | 0.33 | — | — |
| Calculation factorY | 1.8 | — | — |
| Calculation factorY 0 | 1 | — | — |
| Engineering — Dimensions | |||
| Bearing width, totalT | 159.5 mm | — | — |
| Shoulder diameter of inner ringd 1 | ≈ 858.3 mm | — | — |
| Width of inner ringB | 160.338 mm | — | — |
| Width of outer ringC | 123 mm | — | — |
| Chamfer dimension of inner ringr 1,2 | min. 6.4 mm | — | — |
| Chamfer dimension of outer ringr 3,4 | min. 6.4 mm | — | — |
| Distance side face to pressure pointa | 165 mm | — | — |
| Engineering — Engineering specifications | |||
| Dimension series | LM 283600 | — | — |
| Logistics | |||
| Product net weight | 335.0 kg | — | — |
| eClass code | 23-05-09-10 | — | — |
| Manufacturer Identity | |||
| Material Number | — | 000000000100171063 | — |
| Official Class Key | — | — | 140-020-000 |
| World Assembly Part Number | — | LM283649H_LM283610 | — |
| Inner Ring Part Number | — | LM283649H | — |
| Outer Ring Part Number | — | LM283610 | — |
| Drawing Number | — | E-43353 | — |
| Upc | — | 0053893660660 | — |
| Official Source System | — | CORE BP - DS DF | — |
| Official Last Run | — | 2026-08-23T20:02:48.503 | — |
| 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 | 29.5000 in Bore | 39.0000 in OD | 6.2795 in Width | Open | Cylindrical Bore | Steel Cage | Precision ABMA Class 4 | — |
| 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 | 1241.0 kg CO 2 e | — | — |
| Indicative carbon footprint for remanufactured product | 412.0 kg CO 2 e | — | — |
| Technical Data | |||
| d | — | — | 990.600 mm |
| T | — | — | 605.000 mm |
| W | — | — | 605.000 mm |
| R(Min.) | — | — | 6.4 mm |
| R1(Min.) | — | — | 3.2 mm |
| Overall Width | — | 183.738 mm | — |
| Basic Load Ratings : Cr | — | — | 16800 kN |
| Radial Rating | — | 1,330,000 N | — |
| Basic Load Ratings : C0R | — | — | 47700 kN |
| Axial Rating | — | 757,000 N | — |
| Fatigue Load Limit : Cu | — | — | 3560 kN |
| Dynamic Rating C1 | — | 5,130,000 N | — |
| Axial Load Factors : Y2 | — | — | 2.12 mm |
| Dynamic Rating C90 | — | 1,330,000 N | — |
| Axial Load Factors : Y3 | — | — | 3.15 |
| Dynamic Axial Rating Ca90 | — | 757,000 N | — |
| Axial Load Factors : Y0 | — | — | 2.07 |
| Dynamic Axial Rating Ca1 | — | 2,920,000 N | — |
| Constant E | — | — | 0.32 |
| Static Radial Rating C0 | — | 13,200,000 N | — |
| Da(Min.) | — | — | 801 mm |
| Extended Dynamic Rating Ce | — | 0 N | — |
| Da(Max.) | — | — | 929 mm |
| Static Axial Rating C0A | — | 12,800,000 N | — |
| S(Min.) | — | — | 13 mm |
| Ra(Max.) | — | — | 6.4 mm |
| Rb(Max.) | — | — | 3.2 mm |
| Mass(Refer.) | — | — | 1320 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.