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| Parameter | FAG30344-DF-A570-620220 × 460 × 194 mm | KOYO30344220 × 460 × 88 mm |
|---|---|---|
| Comparable specifications | ||
| Brand | FAG | KOYO |
| Designation | 30344-DF-A570-620 | 30344 |
| Product family | — | Single-row / Metric series |
| Detailed type | Tapered roller bearing set | Tapered roller bearings |
| Series | 30344 | — |
| Bore diameterd | 220 mm | 220 mm |
| Outside diameterD | 460 mm | 460 mm |
| WidthB | 194 mm | 88 mm |
| Basic dynamic load ratingC | 2470 kN | 1570 kN |
| Basic static load ratingC0 | 3750 kN | 1680 kN |
| Fatigue load limitPu | 375 kN | 181 kN |
| Reference speednref | 850 r/min | — |
| Limiting speednG | 1560 r/min | 730 r/min |
| Mass≈m | 143.6 kg | 69 kg |
| Precision class | PN — Normal (ISO 492:2023) | — |
| Cage | Standard — Sheet steel cage, window cage, roller-guided | — |
| 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 | 0.35 | — |
| Dynamic axial load factorY1 | 1.96 | — |
| Dynamic axial load factorY2 | 2.91 | — |
| Static axial load factorY0 | 1.91 | — |
| Capabilities & suitability | ||
| Radial load capacity | Yes | — |
| Axial load capacity in one direction | Yes | — |
| Axial load capacity in both directions | 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 | ||
| 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 | — |
| Width of spacerA | 48 mm | — |
| Width of spacerA | 1.89 in | — |
| Main Dimensions & Performance Data | ||
| Inner ring total width2B | 176 mm | — |
| Inner ring total width2B | 6.929 in | — |
| Outer ring total width2T | 194 mm | — |
| Outer ring total width2T | 7.638 in | — |
| Basic dynamic load rating, radialCr | 2,470,000 N | — |
| Basic dynamic load rating, radialCr | 555,305.755 lbf | — |
| Basic static load rating, radialC0r | 3,750,000 N | — |
| Basic static load rating, radialC0r | 843,075.54 lbf | — |
| Fatigue load limit, radialCur | 375,000 N | — |
| Fatigue load limit, radialCur | 84,307.554 lbf | — |
| Thermal speed ratingnϑr | 850 1/min | — |
| Manufacturer Identity | ||
| Schaeffler Product Code | 2293081 | — |
| Official Class Key | — | 050-010-010 |
| Base Type | 30344 | — |
| Product Line Id | 70 | — |
| Base product | 2305091051 | — |
| Mounting dimensions | ||
| Maximum diameter of shaft shoulderda max | 274 mm | — |
| Maximum diameter of shaft shoulderda max | 10.787 in | — |
| Minimum diameter of housing shoulderDa min | 392 mm | — |
| Minimum diameter of housing shoulderDa min | 15.433 in | — |
| Maximum diameter of housing shoulderDa max | 437 mm | — |
| Maximum diameter of housing shoulderDa max | 17.205 in | — |
| Minimum axial spaceCa min | 10 mm | — |
| Minimum axial spaceCa min | 0.394 in | — |
| Maximum fillet radius of housingrb max | 5 mm | — |
| Maximum fillet radius of housingrb max | 0.197 in | — |
| Product characteristics | ||
| Tolerance classPN | Normal (ISO 492:2023) | — |
| Heat treatment | Standard | — |
| Axial internal clearanceA570-620 | Axial internal clearance between 570 and 620 µm | — |
| Quality level | Standard | — |
| Matched arrangementF | X arrangement | — |
| Number of rows2 | Double-row design | — |
| Product Identity | ||
| Construction | Tapered roller bearing set 303..-DF, X-arrangement | — |
| Short Description | Tapered roller bearing set | — |
| Technical Data | ||
| d | — | 460 mm |
| Bore Diameter (D) | 220 mm | — |
| T | — | 97 mm |
| Outside Diameter (D) | 460 mm | — |
| B | — | 88 mm |
| Width Of Bearing Outside (2T) | 194 mm | — |
| C | — | 73 mm |
| Basic Dynamic Load Rating, Radial (Cr) | 2,470,000 N | — |
| R(Min.) | — | 6 mm |
| Basic Static Load Rating, Radial (C0R) | 3,750,000 N | — |
| R1(Min.) | — | 5 mm |
| Operating Temperature Min. (Tmin) | -30 °C | — |
| Basic Load Ratings : Cr | — | 1570 kN |
| Limiting Speed (Ng) | 1,560 1/min | — |
| Basic Load Ratings : C0R | — | 1680 kN |
| Operating Temperature Max. (Tmax) | 200 °C | — |
| Fatigue Load Limit : Cu | — | 181 kN |
| Reference Speed (Nϑr) | 850 1/min | — |
| Limiting Speeds(Grease Lub.) | — | 730 min-1 |
| Maximum Fillet Radius Of Housing (Rb Max) | 5 mm | — |
| Limiting Speeds(Oil Lub.) | — | 980 min-1 |
| Minimum Chamfer Dimension Of Outer Ring Back Face (R3, 4 M) | 5 mm | — |
| Load Center Spread : A | — | 84.6 mm |
| Minimum Diameter Of Housing Shoulder (Da Min) | 392 mm | — |
| Constant E | — | 0.35 |
| Fatigue Load Limit, Radial (Cur) | 375,000 N | — |
| Axial Load Factors : Y1 | — | 1.73 |
| Limiting Value Of Fa/Fr For The Applicability Of Diff. Values Of Factors X And Y (E) | 0.35 | — |
| Axial Load Factors : Y0 | — | 0.95 |
| Maximum Diameter Of Shaft Shoulder (Da Max) | 274 mm | — |
| Da(Min.) | — | 386 mm |
| Dynamic Axial Load Factor (Y1) | 1.96 | — |
| Db(Max.) | — | 282 mm |
| Maximum Diameter Of Housing Shoulder (Da Max) | 437 mm | — |
| Da(Max.) | — | 438 mm |
| Width Of Spacer (A) | 48 mm | — |
| Db(Min.) | — | 420 mm |
| Dynamic Axial Load Factor (Y2) | 2.91 | — |
| Sa(Min.) | — | 12 mm |
| Width Of Bearing Inside (B4) | 176 mm | — |
| Sb(Min.) | — | 23 mm |
| Minimum Axial Space (Ca Min) | 10 mm | — |
| Ra(Max.) | — | 5 mm |
| Static Axial Load Factor (Y0) | 1.91 | — |
| Rb(Max.) | — | 4 mm |
| Mass(Refer.) | — | 69.0 kg |
| 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.