Product Description
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Type TTHD-Thrust Tapered Roller Bearing
TTHD bearings consist of two thrust races, a set of rollers and a cage.
This design can create up to 40 percent more capacity than cylindrical and spherical bearings with the same envelope dimensions.
The configuration of TTHD bearings creates a benefit called true rolling motion. The extensions of the raceways and rollers converge at a common point (the apex) on the axis of rotation. As a result, true rolling motion reduces heat generation and wear on the races and rollers.
Bearings are made from premium quality, case-carburized bearing steel and feature a hard, fatigue-resistant surface and a durable, crack-resistant core to maximize service life.
High-quality materials also provide a high shock resistance in heavy load applications.
Timken designed TTHDs for high thrust-load capacity and applications with increased pressures. The true rolling motion of TTHDs allow for higher speeds with minimum roller skewing or skidding.
Special profiles on TTHDs create an advanced geometry and minimize edge-stress concentrations caused by high thrust loads.
Enhanced material, special finishes and increased precision also can be applied to further extend bearing life.
Additional bearing capacity is available with TTHDFL design, which features a different cage and one flat-thrust race.
Shaft size range: 34.93 ~ 1352.55mm (1.375 ~ 53.250")
Outer bore range: 76.20 ~ 1524.00mm (3.00 ~ 60.00")
Applications: Machine tools, Mill stands, Oil well swivels, Plastic extruders, Pulp refiners.
Timken offers multiple hands-on videos created to assist you in the installation & disassembly of multiple Timken products.
Make sure you apply the correct torque and measure the "bench end play" before completing any taper bearing installation.For more detailed bearing nomenclature with regards to prefixes & suffixes, refer to pages iv ~ xi in the attached Timken 699 catalog .pdf
For detailed information regarding factory pre-set "bench end plays" on assemblies, please feel free to call or email for availability.
Unmachined "green" spacer rings, if available, may be purchased to create custom assemblies, please feel free to call or email for availability.
Timken Taper Catalog 699
Timken Complete Dimensional Catalog
Timken Thrust Bearing Catalog
Timken stronger by design
Bearing component
Bearing component Machined steel thrust bearing unit
Bearing tolerance Standard (-2)
Shown in catalog Yes
