Universal Joint Bearings
Sealed needle roller cups that fit over the trunnions of a cardan cross. Each cup carries high load through a small oscillating angle while keeping grease in and road or plant dirt out, and the four cups in a joint work as a set. SES holds the range as an authorised SKF distributor, covering cup diameter range Follows joint size, roughly 15 mm to 100 mm; construction Drawn or machined cup with full or caged needle complement; sealing Single or multi-lip seals with slinger; thrust face Integral washer or thrust disc at the cup base. Executions include sealed for life universal joint bearings, relubricatable executions, heavy-duty industrial cup executions, full complement cup executions, among others. It is specified most often into rolling mill spindle drives between motor and stand and vehicle and off-highway propeller shafts. 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.
Motion
Oscillating, not continuous rotation
Load
High, cyclic with torque reversal
Sealing
Integral seal, grease retained for life or relubricated
Set
Four cups per cross, replaced together
Where it runs.
You will find Universal Joint Bearings in the parts of a plant where this particular duty actually occurs. In practice that means rolling mill spindle drives between motor and stand, vehicle and off-highway propeller shafts, pump and agitator drive shafts with offset centres, and equally paper machine and converting line drive shafts, industrial cardan couplings between misaligned units, agricultural PTO drive shafts. What links them is the duty rather than the machine name — motion: Oscillating, not continuous rotation. 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. The joint runs at a large working angle continuously — A relubricatable cross with a grease path through the trunnion, since the needles work over a very short arc and grease does not redistribute itself. The drive reverses under load, as in a mill spindle — The heavy-duty execution with a reinforced cup and end thrust washer, because torque reversal hammers the cup base. The shaft runs in wet, dusty or washdown conditions — A cup with a multi-lip seal and a slinger, otherwise water enters at the seal and the needles corrode into the trunnion. 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.
Change all four cups in a cross at once and keep them as a matched set. Fit one new cup alongside three worn ones and the whole torque reversal lands on the new one, which picks up on the trunnion within weeks.