Inch Series Double Row Tapered Roller Bearings
PMK Inch Series Double Row Tapered Roller Bearings combine the strength of two single-row units into a single compact assembly. Their bidirectional load capacity and inch compatibility make them a dependable choice for heavy industrial and transport equipment.
Key benefits
- Supports axial loads in both directions.
- High rigidity for stable operation under varying loads.
- Inch-standard design ensures easy replacement compatibility.
- Compact and durable design reduces space and maintenance needs.
- Long service life in continuous heavy-duty conditions.
Applications
- Steel rolling mills and railway vehicles.
- Industrial gear units and heavy-duty transmission systems.
- Marine and agricultural machinery.
- OEM and retrofit applications requiring inch dimensions.
Specifications
| Boundary dimensions (mm) | Basic load ratings (kN) | Designations | Calculated Constant (e) | Factors of axial load | Mass kg | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| d | D | T | B | r | r1 | Cr | Cor | Y2 | Y3 | Y0 | |||
| 447.675 | 635.000 | 223.838 | 223.838 | 3.2 | 6.4 | 3930 | 10500 | M270748D/M270710 | 0.33 | 2.03 | 3.02 | 1.98 | 234 |
| 635.000 | 223.838 | 223.838 | 3.2 | 6.4 | 3930 | 10500 | M270749D/M270710 | 0.33 | 2.03 | 3.02 | 1.98 | 234 | |
| 457.073 | 730.148 | 196.850 | 203.200 | 1.6 | 6.4 | 4150 | 8230 | EE671798D/672873 | 0.39 | 1.72 | 2.57 | 1.69 | 315 |
| 457.200 | 596.900 | 130.175 | 133.350 | 1.6 | 3.2 | 1920 | 5230 | EE244181D/244235 | 0.40 | 1.67 | 2.48 | 1.63 | 98.1 |
| 596.900 | 133.350 | 136.525 | 1.6 | 3.2 | 1930 | 5110 | L770849D/L770810 | 0.47 | 1.43 | 2.12 | 1.40 | 99.9 | |
| 660.400 | 155.575 | 155.572 | 3.2 | 6.4 | 2320 | 5260 | EE737179D/737260 | 0.37 | 1.80 | 2.69 | 1.76 | 175 | |
| 457.403 | 730.148 | 196.850 | 203.200 | 1.6 | 6.4 | 4150 | 8230 | EE671802D/672873 | 0.39 | 1.72 | 2.57 | 1.69 | 315 |
| 479.425 | 679.450 | 238.125 | 238.125 | 3.2 | 6.4 | 4240 | 11100 | M272749D/M272710 | 0.33 | 2.03 | 3.02 | 1.98 | 277 |
| 482.600 | 615.950 | 158.750 | 158.750 | 3.2 | 6.4 | 2420 | 7110 | LM272249D/LM272210 | 0.33 | 2.03 | 3.02 | 1.98 | 117 |
| 489.026 | 634.873 | 152.400 | 152.400 | 3.2 | 3.2 | 2260 | 6590 | EE243193D/243250 | 0.34 | 1.97 | 2.93 | 1.93 | 127 |
| 634.873 | 153.988 | 153.988 | 3.2 | 3.2 | 2460 | 6840 | LM772749D/LM772710 | 0.47 | 1.43 | 2.12 | 1.40 | 126 | |
| 501.650 | 711.200 | 250.825 | 250.825 | 3.2 | 6.4 | 4810 | 12800 | M274149D/M274110 | 0.33 | 2.03 | 3.02 | 1.98 | 323 |
| 505.181 | 838.200 | 266.700 | 266.700 | 6.4 | 9.5 | 5690 | 11700 | EE426198D/426330 | 0.48 | 1.41 | 2.10 | 1.38 | 590 |
| 508.000 | 762.000 | 219.075 | 219.075 | 6.4 | 6.4 | 4530 | 9970 | EE531201D/531300 | 0.38 | 1.78 | 2.65 | 1.74 | 354 |
| 838.200 | 266.700 | 266.700 | 6.4 | 9.5 | 5690 | 11700 | EE426201D/426330 | 0.48 | 1.41 | 2.10 | 1.38 | 585 | |
| 509.588 | 838.200 | 266.700 | 266.700 | 6.4 | 9.5 | 5690 | 11700 | EE426203D/426330 | 0.48 | 1.41 | 2.10 | 1.38 | 582 |
| 519.113 | 736.600 | 258.763 | 258.763 | 3.2 | 6.4 | 5290 | 13600 | M275349D/M275310 | 0.33 | 2.03 | 3.02 | 1.98 | 361 |
| 536.575 | 761.873 | 269.875 | 269.875 | 3.2 | 6.4 | 5630 | 14400 | M276448D/M276410 | 0.33 | 2.03 | 3.02 | 1.98 | 401 |
| 761.873 | 269.875 | 269.875 | 3.2 | 6.4 | 5630 | 14400 | M276449D/M276410 | 0.33 | 2.03 | 3.02 | 1.98 | 401 | |
| 539.750 | 784.225 | 161.925 | 165.100 | 3.2 | 6.4 | 2880 | 6010 | EE522126D/523087 | 0.48 | 1.42 | 2.11 | 1.39 | 261 |
| 558.800 | 736.600 | 196.850 | 196.850 | 3.2 | 6.4 | 3590 | 9870 | LM377449D/LM377410 | 0.35 | 1.95 | 2.90 | 1.91 | 227 |
| 571.500 | 812.800 | 285.750 | 285.750 | 3.2 | 6.4 | 6510 | 17500 | M278749D/M278710 | 0.33 | 2.03 | 3.02 | 1.98 | 497 |
| 595.313 | 844.550 | 296.863 | 296.863 | 3.2 | 6.4 | 6780 | 18500 | M280049D/M280010 | 0.33 | 2.03 | 3.02 | 1.98 | 549 |
| 609.600 | 787.400 | 171.450 | 171.450 | 3.2 | 6.4 | 3390 | 9940 | EE649241D/649310 | 0.37 | 1.82 | 2.70 | 1.78 | 223 |
| 812.800 | 190.500 | 190.500 | 3.2 | 6.4 | 3280 | 8590 | EE743241D/743320 | 0.33 | 2.06 | 3.06 | 2.01 | 271 | |
| 635.000 | 901.700 | 317.500 | 317.500 | 3.2 | 6.4 | 7480 | 19900 | M281049D/M281010 | 0.33 | 2.03 | 3.02 | 1.98 | 651 |
| 685.800 | 876.300 | 168.275 | 171.450 | 3.2 | 6.4 | 3510 | 10800 | EE655271D/655345 | 0.42 | 1.62 | 2.42 | 1.59 | 261 |
| 711.200 | 914.400 | 149.225 | 149.225 | 3.2 | 6.4 | 3020 | 8930 | EE755281D/755360 | 0.38 | 1.78 | 2.65 | 1.74 | 256 |
| 714.375 | 1016.000 | 339.725 | 339.725 | 3.2 | 6.4 | 9740 | 26100 | M383240D/M383210 | 0.35 | 1.92 | 2.86 | 1.88 | 924 |
| 730.250 | 1035.050 | 365.125 | 365.125 | 3.2 | 6.4 | 9820 | 27100 | M283449D/M283410 | 0.33 | 2.03 | 3.02 | 1.98 | 1000 |
| 749.300 | 990.600 | 293.000 | 293.000 | 3.2 | 6.4 | 7850 | 23900 | LM283649D/LM283610 | 0.32 | 2.12 | 3.15 | 2.07 | 643 |
| 762.000 | 1079.500 | 381.000 | 381.000 | 4.8 | 12.7 | 11100 | 31300 | M284249D/M284210 | 0.33 | 2.03 | 3.02 | 1.98 | 1140 |
| 825.500 | 1168.400 | 409.575 | 409.575 | 4.8 | 12.7 | 13000 | 36200 | M285848D/M285810 | 0.33 | 2.03 | 3.02 | 1.98 | 1440 |
* Note: Dimensions are shown with high precision as per technical requirements. Factors of axial load are used for calculating equivalent dynamic and static loads.
* Specifications subject to change. Contact us for the latest datasheet and custom configurations.
* Refer Disclaimer policy for more details.
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