Inline helical reducers
Coaxial (in-line) helical gear reducers that put the output shaft in line with the input, transmitting high torque efficiently and quietly. The helical gearing runs at high efficiency per stage, so it suits continuous industrial duty where a worm's heat losses would be a problem. SES holds the range as an authorised STM Team distributor, covering series High Tech A (multi-stage), AR/1 (single-stage), CAM; stages Single, double, triple reduction; inputs PAM/IEC & NEMA flange or free input; mounting Foot, flange (B5/B14). Executions include a (helical multi-stage), AR/1 (single-stage), CAM, foot-mount, among others. It is specified most often into conveyors and handling lines and pumps and fans. 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.
Send an enquiry
Check Price & Availability.
Give us the size or the failed part — we reply on WhatsApp.
Trusted across Metals & Energy
Supplying India’s Industrial Names.
From integrated steel plants to power utilities and EPC majors — the works that cannot afford a counterfeit part specify through SES.
Type
In-line helical (coaxial)
Line
STM High Tech A / AR
Efficiency
~96–98% per stage
Series
High Tech A (multi-stage), AR/1 (single-stage), CAM
Where it runs.
You will find Inline helical reducers in the parts of a plant where this particular duty actually occurs. In practice that means conveyors and handling lines, pumps and fans, extruders, and equally process machinery, packaging lines. What links them is the duty rather than the machine name — type: In-line helical (coaxial). 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. In-line input/output and high efficiency needed — Coaxial A / AR helical unit Right-angle layout required — Move to a bevel-helical O series High continuous thermal load — Size on thermal as well as mechanical rating 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 efficient default where the layout allows an in-line drive; confirm mounting position so the oil fill and breather are correct. Send the designation off the failed part and we will confirm the STM Team equivalent and stock position.