TIMKEN Bearing 29468EM

Product description of TIMKEN Bearing 29468EM

TIMKEN Bearing 29468EM, Thrust Spherical Roller Bearings-Type TSR, It belongs to TIMKEN Bearing > Thrust Bearings > Thrust Spherical Roller Bearings-Type TSR. When axial loads combine with high speeds, heavy loads or other challenging conditions, Timken thrust bearings deliver optimum performance. We offer a comprehensive range of thrust bearings in standard as well as custom designs, meeting stringent specifications required for nearly any application.

TIMKEN Bearing 29468EM, Thrust Spherical Roller Bearings-Type TSR, Type DTVL thrust ball bearings have an upper and lower complement of angular contact balls and three race elements. Timken designed this type with the capability to carry a thrust load in one direction, comparable to the TVL type, and a lighter thrust load in the opposite direction. Spherical roller thrust bearings achieve high thrust capacity with low friction and continuous roller alignment – even if the shaft and housing become misaligned during operation. Timken designed type TSR thrust spherical roller bearings to achieve a high thrust capacity with low friction and continuous roller alignment. This bearing type is ideal for operating conditions that experience heavy loads, difficulty in establishing or maintaining housing alignment, or shaft deflection.

Size range:
90 mm to 1000 mm
(4.3307 in. to 33.4646 in.)

TIMKEN Bearing 29468EM, Thrust Spherical Roller Bearings-Type TSR, Design Attributes:
Spherically contoured rollers, arranged in a steep angular position, accommodate high thrust loads and support moderate radial loads.
Bearing geometry and manufacturing technology result in low friction of bearing.
Internal self-alignment of bearing elements during operation compensates for shaft deflections and housing distortions caused by shock or heavy loads.
The TSR’s inherent compensation for misalignment offers equipment designers the opportunity to use weldments for housing frames instead of complex castings, which reduces machining costs.
When castings are preferred, bore alignment is less critical if spherical thrust bearings are specified.
“E” styles utilize enhanced bearing geometry allowing for higher dynamic load ratings and improved lubrication characteristics.

Applications:
Blowout preventers
Classifiers
Extruders
Gearboxes
Metal mill work/back-up rolls
Pre-heater fans
Pumps
Screw conveyors

Spherical roller thrust bearings are used as supports in many rotating machinery. By applying an axial preload, clearance between the raceways and the rollers can be avoided. In order to increase the endurance, the preload shall be kept as low as possible. However, a bearing with low preload is sensitive of loosing full contact leading to nonlinear stiffness characteristics. The objective of this paper is to suggest a tool, which can be used to determine suitable preload and to show that a saddle node bifurcation can occur if the preload is too small. Studying the model in a rotating frame leads to an autonomous equation of motion from which stationary points and their stability can be analysand. Some set of parameters give a non-hyperbolic eigenvalue, and by investigating the corresponding central manifold it is found that a saddle node bifurcation occurs. Since explicit equations for the stationary points are derived, they can be used to choose a preload high enough to make sure that full contact always is a possible solution. It is however shown that if the preload becomes too small, the system enters.

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