Precision-engineered gearboxes and brushless drive assemblies optimized for extreme torque density, shock-load resilience, and seamless shaft-mount integration.
Heavy Duty
Integrated dynamic brake and high-resolution optical encoder controller. Perfect for automated drive feeds and shaft reducer pilot inputs.
High Efficiency
IE3-equivalent efficiency curve with high overload capacity, optimized for coupling directly to shaft-mounted reducer inputs.
NEMA Flange
Compact 0.22Nm base torque unit with low-vibration rotor balance for high-accuracy metering gear mechanisms and conveyor drives.
IP54 Waterproof
Heavy-duty aluminum alloy cooling frame designed for humid process environments, marine facilities, and outdoor material handling.
IP65 Sealed
Fully encapsulated winding protection against thermal shock and moisture ingress in cold storage and chemical processing installations.
High Torque 1KW
Engineered for intense start-stop cycles, heavy winch drives, and mobile haulage equipment requiring maximum initial output torque.
Conversion Kit
Complete heavy-duty conversion power kit, ideal for custom industrial turntable machinery, haulage vehicles, and auxiliary speed reduction units.
Compact Alloy
Precision vibration-damped construction for tight machinery envelopes, lab automation, and sensitive speed reducer assemblies.
In modern industrial power transmission, selecting the optimal speed reduction architecture is a critical factor governing operational efficiency, uptime, and total cost of ownership (TCO). As a premier global manufacturer and exporter supplying the Iberian Peninsula, our engineering focus centers on delivering Shaft Mounted Speed Reducers (SMSR) that eliminate alignment errors, eliminate structural baseplates, and withstand the abrasive, high-humidity, and heavy-shock conditions characteristic of Portuguese heavy industry.
Unlike conventional foot-mounted or flange-mounted gearboxes, a shaft-mounted speed reducer mounts directly onto the driven shaft of the host machine. It is anchored by a flexible torque arm assembly. This shaft-direct orientation drastically reduces installation footprints, simplifies retrofitting in tight processing spaces, and provides superior shock absorption through rubber bushed torque arms—a key requirement in heavy crushing, conveying, and bulk handling systems.
Portugal's industrial economy relies on a unique mix of traditional natural resource processing and advanced high-value manufacturing. Shaft-mounted gear units play a vital role across key regional hubs, from Porto and Aveiro down to Lisbon, Setúbal, and Sines.
Portugal produces over 50% of the world’s cork. Granulation mills, stopper extrusion lines, and debarking conveyors require non-stop low-speed, high-torque drive performance. Our shaft-mounted reducers with double-lip viton seals protect internal gear sets against fine organic cork dust contamination.
Heavy paper machines, log debarkers, and pulp agitators operate continuously under extreme humidity. SMSR units featuring cast-iron housing enclosures (FC250 grade) prevent mechanical deformation under high thermal stress and corrosive washdown cycles.
Extensive stone quarries and emerging green-lithium extraction facilities demand heavy-duty conveyor transmission. Integrated mechanical backstops prevent reverse runaway of inclined belt conveyors, ensuring site safety and operational compliance.
Bulk grain loaders, port container cranes, and ship-unloading augers demand marine-grade C4/C5 multi-layer epoxy coatings. Our units resist aggressive salt spray mist while delivering reliable torque for heavy harbor cargo infrastructure.
Olive pomace extractors, continuous crushers, and grape destemming lines require sanitary, leak-proof gear units fitted with NSF-H1 food-grade synthetic lubricants to guarantee zero batch contamination during harvest peaks.
Waste shredders and rotary sorters experience severe transient peak overloads. Precision hardened helical gear teeth (58-62 HRC) handle high cyclic fatigue without surface pitting or tooth shearing.
The Portuguese industrial sector is rapidly modernizing under European Union Green Deal frameworks and Industry 4.0 digitisation directives. Purchasing directors and maintenance engineering heads are transitioning away from inefficient legacy drive systems toward integrated, intelligent power transmission units. Key technological shifts include:
The following comparative specification table outlines key performance metrics across our primary industrial SMSR series supplied directly to Portuguese engineering contractors and OEMs:
| Model Series | Output Shaft Dia. (mm) | Ratio Range | Max Output Torque (Nm) | Thermal Rating (kW) | Backstop Compatibility | Housing Material |
|---|---|---|---|---|---|---|
| SMSR Series B | 30 - 45 mm | 5:1, 13:1, 20:1 | 1,250 Nm | 15 kW | Optional Internal Cam | GG25 Cast Iron |
| SMSR Series C | 40 - 55 mm | 5:1, 15:1, 25:1 | 2,800 Nm | 28 kW | Integrated One-Way Clutch | GG25 Ductile Iron |
| SMSR Series D | 50 - 70 mm | 13:1, 20:1, 30:1 | 5,500 Nm | 45 kW | Heavy-Duty External / Internal | GGG40 Nodular Iron |
| SMSR Series E | 60 - 85 mm | 15:1, 20:1, 25:1 | 11,000 Nm | 75 kW | Centrifugal Lift-Off Backstop | GGG40 High-Stress Iron |
| SMSR Series F-H | 90 - 125 mm | 15:1, 20:1, 30:1 | 50,000 Nm | 220 kW | Sprag Type Backstop System | Monoblock Reinforced Cast Steel |
With over a century of continuous power transmission innovation, T-T Electric and partner manufacturing divisions stand as global pioneers in rotating machine design. Our modern manufacturing facility incorporates 5-axis CNC gear tooth grinding, vacuum carburizing heat treatment, and dynamic load testing bays to ensure absolute performance consistency.
We provide full traceability across all components through localized serial numbers. Every shaft-mounted reducer bound for Portugal undergoes 100% no-load sound level testing, oil tightness testing under pneumatic pressure, and gear tooth mesh pattern validation.
Recognizing that downtime in automated cork processing plants or paper mills translates into thousands of Euros per hour in lost production, we maintain a robust export logistics framework serving mainland Portugal (Lisbon, Porto, Braga, Aveiro, Coimbra, Setúbal) and autonomous regions (Madeira and Azores).
A shaft mounted speed reducer (SMSR) mounts directly onto the driven shaft of your machine using a hollow bore shaft and taper bushing system. This completely eliminates the need for flexible couplings, external alignment procedures, laser leveling, and heavy structural foundation plates. The torque arm anchors the reducer and absorbs operational reaction torque, cutting total installation time by up to 70%.
Yes. Our SMSR range is engineered in accordance with international metric and imperial mounting standards. Core dimensions, shaft bore sizes, center distances, bolt hole configurations, and torque arm mounting points strictly match standard industry envelopes (such as Fenner, Bonfiglioli, and SEW shaft mount series). You can install our units as direct drop-in replacements during plant maintenance.
We offer internal sprag-type mechanical backstops (anti-runback devices) integrated directly onto the input pinion shaft. The backstop allows unrestricted forward rotation while instantaneously locking if reverse motion occurs during power cuts or motor shutdowns. This prevents dangerous backwards runaway on steep incline conveyors in aggregate quarries and mining operations.
For marine installations at Port of Sines, Leixões, or Lisbon, we furnish units treated with a C4-H or C5-M industrial marine coating process. This involves shot-blasting housing castings to SA 2.5 standard, followed by multi-layered epoxy primers and polyurethane topcoats resistant to salt fog, UV exposure, and chemical abrasion. Shaft sleeves feature stainless steel cladding or ceramic coating paired with Viton double-lip oil seals.
For general industrial operation in Portugal (ambient temperatures ranging from -10°C to +45°C), we recommend high-grade ISO VG 220 or ISO VG 320 synthetic polyalphaolefin (PAO) gear oils. Synthetic lubricants provide superior film strength, lower internal friction, and extended oil drain intervals up to 20,000 operational hours, reducing maintenance frequency in hard-to-reach elevated conveyor drives.
Standard ratios (5:1, 13:1, 20:1, 25:1) in frame sizes B through J are dispatched from stock within 24 to 48 hours via European express logistics networks. Custom input shaft dimensions, special hollow bore diameters, ATEX explosion-proof certifications (for explosive cork or grain dust environments), or special ratios are custom assembled and shipped within 2 to 3 weeks.
Need assistance selecting the exact torque rating, ratio, or taper-bushing bore size for your application in Portugal? Our expert application engineers are available 24/7 to provide complete gear calculation packages and competitive factory-direct pricing.