Bevel-helical reducers
Right-angle bevel-helical reducers that combine a spiral-bevel stage with helical stages for a high-efficiency right-angle drive. They carry far more torque per kilogram than a worm at the same ratio and run cooler, which is why they replace worm units on heavier continuous duty. SES holds the range as an authorised STM Team distributor, covering series O (bevel-helical), OR, SM (skew bevel); stages Two/three reduction (bevel + helical); output Solid or hollow shaft; shrink disc option; inputs PAM/IEC & NEMA flange or free input. Executions include o, OR, SM (skew bevel), hollow-shaft / shrink-disc. It is specified most often into conveyors and elevators and cooling-tower and fan drives. Every part is genuine STM Team 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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Type
Right-angle bevel-helical
Line
STM O / OR (SM skew-bevel)
Efficiency
High, low heat vs worm
Series
O (bevel-helical), OR, SM (skew bevel)
Where it runs.
You will find Bevel-helical reducers in the parts of a plant where this particular duty actually occurs. In practice that means conveyors and elevators, cooling-tower and fan drives, mixers, and equally cranes and travel drives, process machinery. What links them is the duty rather than the machine name — type: Right-angle bevel-helical. 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 STM Team range and confirm what is in stock.
Specify it against the duty.
Specification here follows the operating condition, not the catalogue. Right-angle drive on continuous heavy duty — Bevel-helical O over a worm reducer Compact single-stage right-angle — SM skew-bevel unit Shaft-mounted onto the driven shaft — Hollow-shaft O with shrink disc 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.
The right-angle workhorse for continuous duty — quote against O series where a worm would be running near its thermal limit. Send the designation off the failed part and we will confirm the STM Team equivalent and stock position.