KT Series Thin Section Tapered Roller Bearings
Tapered rollers inside a thin section envelope. Line contact instead of point contact lifts load and moment capacity well above a ball bearing of the same section, and the rollers also give a positioning axis better stiffness. SES holds the range as an authorised SKF distributor, covering rolling elements Tapered rollers; contact Line contact on both raceways; sections Thin, matched to the ball series envelopes; load Radial, axial and moment, axial capacity direction dependent. Executions include single row executions, opposed pairs for two-directional thrust, preloaded matched sets, sealed executions. It is specified most often into heavier robot base and shoulder axes and machine tool rotary and tilting axes. Every part is genuine SKF through official channels, with designation, specification and options confirmed against your duty before it ships — supplied from Kolkata and our branch network, with breakdown cover that does not sit in an inbox.
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From integrated steel plants to power utilities and EPC majors — the works that cannot afford a counterfeit part specify through SES.
Rolling elements
Tapered rollers, line contact
Load
Higher radial, axial and moment than a ball type
Stiffness
High for the section
Speed
Lower than an equivalent ball type
Where it runs.
You will find KT Series Thin Section Tapered Roller Bearings in the parts of a plant where this particular duty actually occurs. In practice that means heavier robot base and shoulder axes, machine tool rotary and tilting axes, gantry rotation on cutting and welding rigs, and equally positioners carrying offset fixtures, turntables on medium-duty handling equipment, test rigs applying moment through a rotary axis. What links them is the duty rather than the machine name — rolling elements: Tapered rollers, line contact. If your installation is not on that list it matters less than you would think: the operating condition decides the specification. Send us the load, the speed, the running temperature and the environment it runs in, and we will match it to the right execution in the SKF range and confirm what is in stock.
Specify it against the duty.
Specification here follows the operating condition, not the catalogue. A thin section ball bearing is at its moment limit — The tapered roller series in the same section before you increase diameter. You normally gain the capacity without redrawing the housing. Deflection under load matters more than friction — Tapered rollers with a set preload. The axis will hold angular position where a clearance-fitted ball type will not. The duty involves fast continuous rotation — Go back to a ball type. Tapered rollers in a thin section run warmer and the speed rating is the limit you meet first. Where two of those apply at once, specify for the harsher of the two — under-specifying is what puts the part back on the bench a month later. Send us the duty and we will confirm the execution.
Ordering this from SES.
Give these a proper run-in before measuring anything. Tapered rollers need a few slow turns under light load to seat against the large-end flange, and torque readings taken before that mean nothing. Send the designation off the failed part and we will confirm the SKF equivalent and stock position.