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| Parameter | SKF32256280 × 500 × mm | FAG32256-P5280 × 500 × 137 mm | KOYO32256280 × 500 × 130 mm |
|---|---|---|---|
| Comparable specifications | |||
| Brand | SKF | FAG | KOYO |
| Designation | 32256 | 32256-P5 | 32256 |
| Product family | Tapered roller bearings | — | Single-row / Metric series |
| Detailed type | Single row tapered roller bearing | Tapered roller bearings | Tapered roller bearings |
| Series | — | 32256 | — |
| Bore diameterd | 280 mm | 280 mm | 280 mm |
| Outside diameterD | 500 mm | 500 mm | 500 mm |
| WidthB | — | 137 mm | 130 mm |
| Basic dynamic load ratingC | 2410 kN | 2290 kN | 2340 kN |
| Basic static load ratingC0 | 3900 kN | 3950 kN | 3150 kN |
| Fatigue load limitPu | 310 kN | 350 kN | 297 kN |
| Reference speednref | 850 r/min | 650 r/min | — |
| Limiting speednG | 1200 r/min | 1290 r/min | 610 r/min |
| Mass≈m | 109 kg | 110.5 kg | 108 kg |
| Precision class | — | P5 — Class 5 (ISO 492:2023) | — |
| Sealing | Without | — | — |
| Cage | Sheet metal | Standard — Sheet steel cage, window cage, roller-guided | — |
| Lubricant | None | — | — |
| Minimum operating temperatureTmin | — | -30 °C | — |
| Maximum operating temperatureTmax | — | 200 °C | — |
| Calculation factors | |||
| Limiting value of Fa/Fr for the applicability of diff. Values of factors X and Ye | — | 0.45 | — |
| Dynamic axial load factorY | — | 1.34 | — |
| Static axial load factorY0 | — | 0.73 | — |
| Capabilities & suitability | |||
| Radial load capacity | — | Yes | — |
| Axial load capacity in one direction | — | Yes | — |
| Suitable for grease lubrication | — | Yes | — |
| Suitable for oil lubrication | — | Yes | — |
| Unsealed design | — | Yes | — |
| Classification | |||
| Official Category Path | — | — | Tapered roller bearings - Single-row - Metric series |
| Official Classification 1 | — | — | Tapered roller bearings / Single-row / Metric series |
| Dimensions | |||
| Width, total | 137.0 mm | — | — |
| Width, inner ring | 130.0 mm | — | — |
| Width, outer ring | 106.0 mm | — | — |
| Contact angle | 16.7 ° | — | — |
| Minimum chamfer dimension of inner ring back facer1, 2 min | — | 6 mm | — |
| Minimum chamfer dimension of inner ring back facer1, 2 min | — | 0.236 in | — |
| Minimum chamfer dimension of outer ring back facer3, 4 min | — | 5 mm | — |
| Minimum chamfer dimension of outer ring back facer3, 4 min | — | 0.197 in | — |
| Distance between the apexes of the pressure conesa | — | 118 mm | — |
| Distance between the apexes of the pressure conesa | — | 4.646 in | — |
| Guidance rib diameter of inner ringd1 | — | 384.5 mm | — |
| Guidance rib diameter of inner ringd1 | — | 15.138 in | — |
| Engineering — Abutment dimensions | |||
| Diameter of shaft abutmentd a | max. 319 mm | — | — |
| Diameter of shaft abutmentd b | min. 302 mm | — | — |
| Diameter of housing abutmentD a | max. 478 mm | — | — |
| Diameter of housing abutmentD b | min. 473 mm | — | — |
| Minimum width of space required in housing on large side faceC a | min. 10 mm | — | — |
| Minimum width of space required in housing on small side faceC b | min. 31 mm | — | — |
| Radius of shaft filletr a | max. 5 mm | — | — |
| Radius of housing filletr b | max. 4 mm | — | — |
| Engineering — Calculation data | |||
| Limiting valuee | 0.44 | — | — |
| Calculation factorY | 1.4 | — | — |
| Calculation factorY 0 | 0.8 | — | — |
| Engineering — Dimensions | |||
| Bearing width, totalT | 137 mm | — | — |
| Shoulder diameter of inner ringd 1 | ≈ 384.1 mm | — | — |
| Width of inner ringB | 130 mm | — | — |
| Width of outer ringC | 106 mm | — | — |
| Chamfer dimension of inner ringr 1,2 | min. 6 mm | — | — |
| Chamfer dimension of outer ringr 3,4 | min. 5 mm | — | — |
| Distance side face to pressure pointa | 116 mm | — | — |
| Engineering — Engineering specifications | |||
| Dimension series | 4GD | — | — |
| Logistics | |||
| Product net weight | 109.0 kg | — | — |
| eClass code | 23-05-09-10 | — | — |
| UNSPSC code | 31171516 | — | — |
| Main Dimensions & Performance Data | |||
| Width, inner ringB | — | 130 mm | — |
| Width, inner ringB | — | 5.118 in | — |
| Width, outer ringC | — | 106 mm | — |
| Width, outer ringC | — | 4.173 in | — |
| Width, totalT | — | 137 mm | — |
| Width, totalT | — | 5.394 in | — |
| Basic dynamic load rating, radialCr | — | 2,290,000 N | — |
| Basic dynamic load rating, radialCr | — | 514,838.129 lbf | — |
| Basic static load rating, radialC0r | — | 3,950,000 N | — |
| Basic static load rating, radialC0r | — | 888,039.568 lbf | — |
| Fatigue load limit, radialCur | — | 350,000 N | — |
| Fatigue load limit, radialCur | — | 78,687.05 lbf | — |
| Thermal speed ratingnϑr | — | 650 1/min | — |
| Manufacturer Identity | |||
| Schaeffler Product Code | — | 2269045 | — |
| Official Class Key | — | — | 050-010-010 |
| Base Type | — | 32256 | — |
| Product Line Id | — | 70 | — |
| Base product | — | 2305091001 | — |
| Bearing X designation | — | 32256-P5 | — |
| Mounting Manager ID | — | 32256-P5 | — |
| Grease application ID | — | 32256-P5 | — |
| Mounting dimensions | |||
| Maximum diameter of shaft shoulderda max | — | 321 mm | — |
| Maximum diameter of shaft shoulderda max | — | 12.638 in | — |
| Minimum diameter of shaft shoulderdb min | — | 337 mm | — |
| Minimum diameter of shaft shoulderdb min | — | 13.268 in | — |
| Minimum diameter of housing shoulderDa min | — | 418 mm | — |
| Minimum diameter of housing shoulderDa min | — | 16.457 in | — |
| Maximum diameter of housing shoulderDa max | — | 477 mm | — |
| Maximum diameter of housing shoulderDa max | — | 18.78 in | — |
| Minimum diameter of housing shoulderDb min | — | 473 mm | — |
| Minimum diameter of housing shoulderDb min | — | 18.622 in | — |
| Minimum axial spaceCa min | — | 19 mm | — |
| Minimum axial spaceCa min | — | 0.748 in | — |
| Minimum axial spaceCb min | — | 31 mm | — |
| Minimum axial spaceCb min | — | 1.22 in | — |
| Maximum fillet radius of shaftra max | — | 6 mm | — |
| Maximum fillet radius of shaftra max | — | 0.236 in | — |
| Maximum fillet radius of housingrb max | — | 5 mm | — |
| Maximum fillet radius of housingrb max | — | 0.197 in | — |
| Product characteristics | |||
| Tolerance classP5 | — | Class 5 (ISO 492:2023) | — |
| Heat treatment | — | Standard | — |
| Internal design | — | Standard | — |
| Quality level | — | Standard | — |
| Number of rows1 | — | Single-row design | — |
| 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 | |||
| Construction | — | Tapered roller bearings 322, main dimensions acc. to DIN 720, separable | — |
| Short Description | — | Tapered roller bearing | — |
| Properties | |||
| Bearing part | Complete bearing | — | — |
| Number of rows | 1 | — | — |
| 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 | Metric | — | — |
| Candidate for remanufacturing | Yes | — | — |
| Indicative carbon footprint for new product | 401.0 kg CO 2 e | — | — |
| Indicative carbon footprint for remanufactured product | 133.0 kg CO 2 e | — | — |
| Technical Data | |||
| d | — | — | 500 mm |
| Bore Diameter (D) | — | 280 mm | — |
| T | — | — | 137 mm |
| Outside Diameter (D) | — | 500 mm | — |
| B | — | — | 130 mm |
| Width (B) | — | 137 mm | — |
| C | — | — | 106 mm |
| Basic Dynamic Load Rating, Radial (Cr) | — | 2,290,000 N | — |
| R(Min.) | — | — | 6 mm |
| Basic Static Load Rating, Radial (C0R) | — | 3,950,000 N | — |
| R1(Min.) | — | — | 5 mm |
| Operating Temperature Min. (Tmin) | — | -30 °C | — |
| Basic Load Ratings : Cr | — | — | 2340 kN |
| Limiting Speed (Ng) | — | 1,290 1/min | — |
| Basic Load Ratings : C0R | — | — | 3150 kN |
| Operating Temperature Max. (Tmax) | — | 200 °C | — |
| Fatigue Load Limit : Cu | — | — | 297 kN |
| Reference Speed (Nϑr) | — | 650 1/min | — |
| Limiting Speeds(Grease Lub.) | — | — | 610 min-1 |
| Maximum Fillet Radius Of Housing (Rb Max) | — | 5 mm | — |
| Limiting Speeds(Oil Lub.) | — | — | 810 min-1 |
| Minimum Chamfer Dimension Of Outer Ring Back Face (R3, 4 M) | — | 5 mm | — |
| Load Center Spread : A | — | — | 117.2 mm |
| Minimum Diameter Of Housing Shoulder (Da Min) | — | 418 mm | — |
| Constant E | — | — | 0.43 |
| Minimum Diameter Of Housing Shoulder (Db Min) | — | 473 mm | — |
| Axial Load Factors : Y1 | — | — | 1.39 |
| Width, Outer Ring (C) | — | 106 mm | — |
| Axial Load Factors : Y0 | — | — | 0.77 |
| Fatigue Load Limit, Radial (Cur) | — | 350,000 N | — |
| Da(Min.) | — | — | 420 mm |
| Limiting Value Of Fa/Fr For The Applicability Of Diff. Values Of Factors X And Y (E) | — | 0.45 | — |
| Db(Max.) | — | — | 325 mm |
| Maximum Diameter Of Shaft Shoulder (Da Max) | — | 321 mm | — |
| Da(Max.) | — | — | 478 mm |
| Minimum Diameter Of Shaft Shoulder (Db Min) | — | 337 mm | — |
| Db(Min.) | — | — | 474 mm |
| Maximum Diameter Of Housing Shoulder (Da Max) | — | 477 mm | — |
| Sa(Min.) | — | — | 16 mm |
| Dynamic Axial Load Factor (Y) | — | 1.34 | — |
| Sb(Min.) | — | — | 30 mm |
| Maximum Fillet Radius (Ra Max) | — | 6 mm | — |
| Ra(Max.) | — | — | 5 mm |
| Minimum Axial Space (Cb Min) | — | 31 mm | — |
| Rb(Max.) | — | — | 4 mm |
| Minimum Chamfer Dimension Of Inner Ring Back Face (R1, 2 M) | — | 6 mm | — |
| Mass(Refer.) | — | — | 108 kg |
| Guidance Rib Diameter Of Inner Ring (D1) | — | 384.5 mm | — |
| Minimum Axial Space (Ca Min) | — | 19 mm | — |
| Width, Inner Ring (B) | — | 130 mm | — |
| Static Axial Load Factor (Y0) | — | 0.73 | — |
| Distance Between The Apexes Of The Pressure Cones (A) | — | 118 mm | — |
| Temperature range | |||
| Operating temperature min.Tmin | — | -30 °C | — |
| Operating temperature min.Tmin | — | -22 °F | — |
| Operating temperature max.Tmax | — | 200 °C | — |
| Operating temperature max.Tmax | — | 392 °F | — |
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.