Four-row tapered roller bearings, TQO design

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Depending on their design, four-row tapered roller bearings provide the following main features and benefits: Long service life The four-cup design (four separate outer rings) provides optimal load distribution over all four rows of rollers. Enhanced operational reliability.Design Attributes: Two tapered-bore single cones, one tapered-bore double cone, four single cups and three cup spacers. Front faces of single cones and both faces of double cone are extended to contact each other. Tapered cone bores are matched for continuous taper through the cones.

For metric-design medium-angle and steep-angle tapered roller bearings, the respective contact angle symbol C or D is added after the bore number. For normal-angle tapered roller bearings, no contact angle symbol is used. Medium-angle tapered roller bearings are primarily used for the pinion shafts of differential gears of automobiles.

Bearing Number	Bore Dia	Outer DIa	Width	Size
584.2 mm x 901.7 mm x 523.08 mm skf BT4B 328314 G/HA1 Four-row tapered roller bearings, TQO design	1030 mm	3600 kN	35 mm	4000 kN
685.8 mm x 876.3 mm x 352.425 mm skf BT4B 328955 BG/HA1VA901 Four-row tapered roller bearings, TQO design	1.00 mm	4800 rpm	86.00 mm	90.000 mm
482.6 mm x 615.95 mm x 330.2 mm skf BT4-8163 E81/C725 Four-row tapered roller bearings, TQO design	4900 rpm	110.0000 mm	56100 N	1.50 mm
510 mm x 655 mm x 377 mm skf BT4-8167 E8/C775 Four-row tapered roller bearings, TQO design	4.2	5.5 mm	79.8 mm	1.5 mm
540 mm x 690 mm x 400 mm skf 331978 BG Four-row tapered roller bearings, TQO design	37 N/µm	0.22 kN	43000 r/min	14
330.302 mm x 438.023 mm x 247.65 mm skf BT4-8113 E2/C500 Four-row tapered roller bearings, TQO design	63.5 mm	15.0 mm	12700 N	68.5 mm
609.6 mm x 813.562 mm x 479.425 mm skf BT4B 334108 G/HA4VA901 Four-row tapered roller bearings, TQO design	190 mm	2 mm	174 mm	145 mm
406.4 mm x 546.1 mm x 288.925 mm skf BT4-8171 E8/C500 Four-row tapered roller bearings, TQO design	19.05 mm	42.069 mm	18.2 kg	253 kN
510 mm x 655 mm x 377 mm skf BT4B 331747 E/C775 Four-row tapered roller bearings, TQO design	342.660 kN	4 mm	900 min-1	400 mm
609.6 mm x 787.4 mm x 361.95 mm skf BT4B 328871 G/HA1VA901 Four-row tapered roller bearings, TQO design	10.8 kN	2.16 kN	18000 r/min	16000 r/min
292.1 mm x 422.275 mm x 269.875 mm skf BT4B 331968 BG/HA1 Four-row tapered roller bearings, TQO design	0.095	Tr 260x4	161 mm	400 mm
406.4 mm x 546.1 mm x 288.925 mm skf BT4B 328838 BG/HA1VA901 Four-row tapered roller bearings, TQO design	35 mm	0.25 m/s	35 mm	5 m/s