SEW S Series Helical Worm Gearmotor (Low Voltage)

The SEW S Series Helical Worm Gearmotor (Low Voltage) boasts prominent advantages tailored for light to medium-duty industrial scenarios, combining reliability, safety, and versatility. Its integrated helical worm gearing structure delivers exceptional torque transmission efficiency and ultra-quiet operation, outperforming standard worm gearmotors while maintaining a compact footprint—ideal for space-constrained installations. The low-voltage design (paired with DR/DT/DV series motors) ensures safe operation in voltage-constrained industrial environments, complying with global electrical safety standards and reducing potential hazards.

Durable components and optimized lubrication systems minimize wear and tear, eliminating frequent maintenance needs and extending service life, thus cutting long-term operational costs. Available in S, SF, SAF, and SHF variants, it offers flexible configurations with diverse mounting options and shaft designs, seamlessly adapting to customized system setups. Operating at a standard 1400 rpm, it excels in applications like conveyors, small mixers, material handling equipment, packaging machinery, and food processing lines. It also performs reliably in textile and pharmaceutical machinery, where low noise and stable low-voltage operation are critical. Backed by SEW’s global service network, it balances cost-effectiveness, adaptability, and consistent performance for diverse low-voltage industrial drive requirements. (400 words)

Features

Our new S..7power series offers even higher torque for all seven sizes, which ensures you can benefit from a higher power density. Torque on the S..7p series is up to 65 % higher than on standard S..7 helical-worm gear units.

Lubrication

Besides lubricating the gearing, gear oils also play a significant role in dissipating heat in gear units. Our new lubricant SEW GearOil Poly increases the performance of worm gear units by reducing friction in the gear teeth in particular. As a result, the helical-worm gear units can be pushed to a higher torque. SEW GearOil Poly forms a highly effective lubrication film, which increases the service life of both the lubricant itself and wear parts such as sealing rings and bearings. SEW GearOil Poly also improves the efficiency of the helical-worm gear units.

Efficiency

The way power and speed are transmitted in helical-worm gearing generates a high level of sliding friction between the worm and worm gear. Using SEW GearOil Poly ensures outstanding lubrication and optimum heat dissipation at every operating point, which fundamentally enhances efficiency. As a result, it has been possible to increase the efficiency of S..7p helical-worm gear units by up to 13 percentage points. This effect is particularly noticeable on the large gear ratios and is hugely beneficial. This enhanced efficiency immediately gives you a higher usable output torque for the same motor power. If the higher output torque is not taken off, consumption is reduced at the same speed and you save energy and benefit from reduced energy costs.

More power or more reserves

The increased torques mean that, in the best-case scenarios, you can select the next size down, as you can now take off higher torques in a smaller space or, if you cannot vary the gear unit size, you have greater safety/reserves in your drive.

Technical Data of K Series Helical-Bevel Gearmotors & S/S..7p Series

* Smaller values possible, depending on the ratio