29280 EM 29380 EM 29480 EM 29284 EM 29384 EM 29484 EM 29288 EM 29388 EM 29488 EM , Spherical Roller Thrust Bearings
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Principal dimensions | Basic load ratings | Speed limits | Weight | Radius | Dimensions | |||||||||
Part number | Bore | Outer | Height | Dynamic | Static | Grease | Oil | |||||||
d | D | H | C | Co | rpm | Kg | rs min | d1 | D1 | B | C | a | ||
mm | kN | 1 min−1 | mm | mm | ||||||||||
29280 EM | 400 | 540 | 85 | 2065 | 9839 | 700 | 55,1 | 4 | 457,5 | 510 | 63,3 | 42,6 | 212 | |
29380 EM | 400 | 620 | 132 | 4040 | 16810 | 450 | 146 | 6 | 487,5 | 575 | 98 | 66,9 | 225 | |
29480 EM | 400 | 710 | 185 | 6757 | 25820 | 380 | 314 | 7,5 | 517,5 | 645 | 140 | 94 | 236 | |
29284 EM | 420 | 580 | 95 | 2536 | 12067 | 560 | 74,9 | 5 | 483,5 | 550 | 72 | 49,7 | 225 | |
29384 EM | 420 | 650 | 140 | 4434 | 18466 | 420 | 170 | 6 | 512,5 | 600 | 103,5 | 70,7 | 235 | |
29484 EM | 420 | 730 | 185 | 6969 | 27200 | 370 | 325 | 7,5 | 538,0 | 665 | 142 | 92,1 | 244 | |
29288 EM | 440 | 600 | 95 | 2618 | 12747 | 560 | 79 | 5 | 503,5 | 570 | 72 | 49,6 | 235 | |
29388 EM | 440 | 680 | 145 | 4757 | 20018 | 400 | 192 | 6 | 536,5 | 630 | 108 | 73,7 | 245 | |
29488 EM | 440 | 780 | 206 | 8073 | 31032 | 350 | 421 | 9,5 | 570,0 | 710 | 152 | 105 | 260 |
These Spherical Roller Thrust Bearings are designed to accommodate heavy thrust loads. Due to raceways being inclined to the bearings axis, they can also accommodate radial loads up to a maximum of 55% of the thrust load and are suitable for taking high thrust loads at relatively high speed. Misalignment varies per series; figures are shown below.
Dimensions in accordance with ISO 104-2002
Series |
Misaligment |
292 293 294 | 2° 2.5° 3° |
The bearings are fitted with asymmetrical barrel-shaped rollers. Dimensions con- form to ISO 104-2002. In general, lubrication of these bearings should be with oil except in certain exceptional cases. It is also essential that a minimum thrust load be present to avoid damage to the raceways by centrifugal forces (see formula below).
Fa min =1.5 cor /1000 [KN]
where: Fa min = minimum thrust load [KN] Cor = static capacity [KN]