Tapered Thrust Roller Bearings

Tapered Thrust Roller BearingsThe inner and outer raceways of tapered thrust roller bearings are tapered, and the rolling elements are also tapered rollers. The extension lines of the three converge at the same point as the bearing line. Therefore, the movement friction is smaller than other thrust roller bearings. Tapered thrust roller bearings do not allow angular error between the shaft and the bearing seat.

Product parameters

Principal dimensions		Basic load ratings		Limiting speed		Designation
		Dynamic	Static	Grease	Oil
d	D	Cr	Cor	RPM	RPM
mm		KN		r/min		Bearing No
84.925	76.2	89	301			T135
170	240	403	1560	270	450	LY-9035(829234)
180	360	1920	6700	300	500	99436M/P6
200	400	1720	7226	200	300	99440
210	460	2870	14450	290	390	91742
210	460	2870	14450	290	390	91742 DS
240	540	5100	28760	250	340	91748/YA
260	480	2558	11360	160	220	99452
270	550	4080	20940	240	330	91754
280	520	2950	13350	140	190	99456
320	580	3740	17537	110	160	99464
320	580	4260	16400	110	160	99464M
320	440	1000	4660	100	150	LY-9036(829264)
340	460	1070	5640	100	180	LY-9037(829268H)
350	490	1330	6470	130	200	LY-9038(829970)
380	670	4710	22870	85	120	99476
1290	1550	6970	55950	95	120	917/1290

Types of tapered thrust roller bearings

Taper thrust roller bearings enable axially very compact bearing arrangements to be produced, which can carry hefty axial loads, and are insensitive to shock loads. They make single and double-direction taper thrust roller bearings. They are used for rolling mill screw-down arrangements. The screw-down approaches constitute a unique design of single-direction taper thrust roller bearing and have a full complement of rollers.single direction taper thrust roller bearingsWe produce single-direction taper thrust roller bearings in two designs that differ in the execution of the washers.Bearings of the one design (1) have a shaft and housing washers with the exact dimensions. These washers both have a tapered raceway and one retaining flange. The bearings have a cage that is centered on both washers. Bearings of this design are to be preferred where hefty axial loads occur, for example, in the swivels of drilling rigs or crane hooks.Bearings of the other design (2) have a shaft washer with the tapered raceway and retaining flange, whereas the housing washer is a plane (flat). Therefore, bearings of this design can accept minor eccentricities of the shaft concerning the housing bore without any detrimental influence on bearing performance. Except for a few sizes with a full complement of rollers, the bearings are fitted with a roller-centered cage.Double direction taper thrust roller bearingsTaper thrust roller bearings of the double direction type are mainly used together with multi-row cylindrical roller bearings in rolling mill applications. Those bearings with a plane shaft washer(3) are the more popular as they can accommodate slight eccentricities of the shaft concerning the housing bore, of the order of the radial internal clearance of the radial bearing with which they are used. A spacer sleeve is arranged between the two housing washers. This is dimensioned so that the cover screws of the chock can be fully tightened, and no unique spring adjustment of the bearing is required.The double direction taper thrust roller bearings with tapered raceways on the shaft and housing washers (4) generally have a higher axial load-carrying capacity than the bearings with a plane shaft washer. They are also able to locate the shaft to a certain extent radially. Double-direction tapered roller thrust bearings are usually installed with a loose fit in the roll neck and housing, and most bearings have one or two locating grooves in the shaft washer. This prevents the shaft ring from disengaging.

Features of tapered thrust roller bearings

• Separable designThe shaft and housing washers and the roller and cage thrust assemblies of tapered thrust roller bearings with cages can be mounted separately.
• Low frictionThe flange's optimized roller end design and surface finish promote lubricant film formation, resulting in lower friction. This also reduces frictional heat and flange wear.
• Long service lifeDepending on the design, crowned or logarithmic raceway profiles optimize the load distribution along the contact surfaces, reduce stress peaks at the roller ends, and reduce the sensitivity to misalignment compared with conventional straight raceway profiles.
• Enhanced operational reliabilityThe surface finish on the contact surfaces on the rollers and raceways supports the formation of a hydrodynamic lubricant film.
• High load-carrying capacityThe rollers incorporated in tapered thrust roller bearings are manufactured to such close dimensional and geometrical tolerances that they are practically identical. This provides optimal load distribution and enables the bearings to accommodate heavy axial loads.

Applications of tapered thrust roller bearings

Single-direction taper thrust roller bearings are suitable for hook and oil drilling rig rotation. Double direction taper thrust roller bearings are ideal for rolling mill roll necks.

Company Information

We are a professional bearing exporter in China, producing many bearings in different sizes and sizes. We can provide you with excellent service in a wide range of bearings with world-class quality, such as deep groove ball bearings, spherical roller bearings, spherical ball/roller bearings, and cylindrical roller bearings, tapered roller bearings, angular contact Ball bearings, etc. Bearings can also provide OEM services according to customer requirements. We adhere to strict global standards, which is why we can provide you with a wide range of bearings of world-class quality. We have always adhered to the principle of "integrity-based, quality first, customer foremost." We are ready to use our sincerity to serve every global customer for long-term and win-win cooperation.