SEW‑EURODRIVE gearmotors and gear units provide controlled speed, high output torque and dependable power transmission for conveyors, mixers, packaging machinery, material-handling systems and other industrial equipment. Available configurations include inline helical, parallel-shaft helical, helical-bevel, helical-worm and SPIROPLAN® right-angle designs.
Choosing the correct unit requires more than matching horsepower. Gear ratio, output speed, torque, service factor, mounting position, shaft configuration, voltage, brake requirements and operating environment can all affect proper selection.
Need a replacement gearmotor? Request a quote or email a picture of the nameplate to sales@sqone.com
SEW‑EURODRIVE Gear Unit Comparison Chart
| Series | Gear-unit design | Shaft arrangement | Common applications |
|---|---|---|---|
| R Series | Helical | Inline | Conveyors, mixers and general machinery |
| F Series | Parallel-shaft helical | Parallel | Conveyors and space-restricted equipment |
| K Series | Helical-bevel | Right angle | Material handling and high-torque drives |
| S Series | Helical-worm | Right angle | Quiet, compact machinery |
| W Series | SPIROPLAN® | Right angle | Compact conveyors and light-duty machinery |
SEW-EURODRIVE Gearmotor Product Overview
SEW-EURODRIVE manufacturers a wide range of gearmotor designs. The primary factor in determining the type of gearmotor is the direction of flow force of the gear unit. There are three different basic designs in this regard: Parallel-shaft gear units, right-angle gear units, and planetary gear units.
Helical Gearmotor R Series
The inline R Series helical gearmotors provide an optimal balance of power, efficiency, and space savings. With a wide range of sizes and torque capacities, these units are ideal for applications that require precision and durability.
Options include:
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Single-stage or multi-stage
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Foot-mounted, flange-mounted, or both
- Extended bearing hub versions
Notable models:
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RX Series – Single-stage units designed for high output speeds.
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R Series – Multi-stage units with lightweight die-cast aluminum design, perfect for conveyors and machine construction.
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RM Series – Extended hub for agitators, designed to handle high axial loads.
Parallel Shaft Helical Gearmotor F Series
Parallel-shaft gearmotors designed for slim, space-restricted applications in conveyor and process engineering. F Series gearmotors deliver high torque density with combination options for gear units and SEW Eurodrive's entire spectrum of AC asynchronous motors, as needed.
Applications:
- Conveyors
- Packaging
- Processing equipment
Available versions:
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Foot-mounted or flange-mounted
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Solid or hollow shafts (keyed, shrink disc, splined, TorqLOC®)
Helical-Bevel Gearmotor K Series
With efficiency exceeding 90%, the K Series helical-bevel gearmotors are among the most energy-efficient angular gear drives available.
K Series gearmotors are compact high torque solutions. The high-endurance gearing is quality engineered for durability, providing low-maintenance solutions with motor power range up to 200 KW. More options include a wide range of gear unit ratios, foot or flange-mounted design for flexible installation, and motor variants for energy efficiency classes IE1 to IE4.
Advantages:
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Long service life
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Wear-free operation
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Reduced backlash options for precise positioning
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Compatible with AC motors and servomotors
Helical-Worm Gearmotor S Series
S Series gearmotors combine helical and worm gearing, offering higher efficiency than traditional worm drives. Ideal for simple applications across multiple industries, configuration options include a generous range of sizes, gear ratios, and motor sizes.
Best of all, hey operate at an extremely low noise volume.
Features:
- Quiet operation
- Flange or foot-mount design
- Solid and hollow shaft options
Spiroplan® Gearmotor W Series
Unique in design, W Series SPIROPLAN® gearmotors use steel-on-steel gearing and a lightweight aluminum housing. They’re compact, quiet, and maintenance-free, making them well-suited for tight spaces and hygienic applications.
Space-saving and simple to install, SPIROPLAN® gearing offers a relatively vibration-free drive with low weight and high efficiency. These right-angle gear units are also maintenance-free thanks to their practical lubrication for life.
Be it with hollow shaft or solid shaft, SEW-EURODRIVE offers a diverse range of mounting and extension options and motor combinations to meet your requirements.
Features:
- Lightweight aluminum design
- Low maintenance
- Extremely low vibration
- Energy efficiency classes IE1 to IE4
Stainless Steel Gear Units
SEW‑EURODRIVE stainless steel gearmotors are designed for hygiene-sensitive food, beverage, and pharmaceutical applications. Their compact, fanless construction and smooth stainless steel housings minimize dirt traps, simplify cleaning and withstand frequent washdowns.
These corrosion-resistant gearmotors offer reliable performance, low maintenance, and resistance to acids and alkalis, with available torque ratings up to 870 Nm.
Benefits:
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Hygienic, easy-to-clean surfaces
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Resistance to acids and alkalis
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Long operating life under harsh cleaning conditions
For precision applications, SEW-EURODRIVE's stainless steel servo motors can be connected to compatible stainless steel gear units using adapters.
VARIBLOC® wide V-belt variable-speed gearmotors
Applications:
- Simple conveyor systems
- Pumps
- Screw conveyors
- Construction materials industry
- Special machine design
Features:
- Power range up to 45 kW
- Speed setting ranges: 1:4, 1:6 and 1:8
- U-shaped or Z-shaped power flow
- Numerous possible combinations with reduction gear units
- For numerous designs
- For easy adaptation to the most diverse machine designs
- The foot- and flange-mounted designs can also be used to power machines directly without a reduction gear unit
- Can be combined with motors from the modular system so that they meet the requirements of the efficiency classes IE1 and IE2
- Flexible due to finely calibrated gear ratio ranges of the reduction gear units per size
- Very easy to operate using a handwheel or remote control
VARIMOT® Friction Disc Variable Speed Gearmotors
For variable speed applications up to 45 kW, SEW-EURODRIVE offers VARIMOT® gearmotors with high torque output.
Applications:
- Simple conveyor systems
- Pumps
- Agitators
- Construction materials industry
- Special machine design
Features:
- Manual or remote speed control
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Flexible mounting
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Broad range of gear ratios
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Perfect for mixers, conveyors, and custom machinery
- Power range up to 2.2 kW
- Speed setting range 1:5
- The contact pressure between the drive pulley and the friction ring required for torque transmission is set automatically
- The speed control can be adjusted even when the gearmotor is at a standstill
- The foot- and flange-mounted designs can also be used to power machines directly without a reduction gear unit
- Can be combined with motors from the modular system DR..
- Flexible due to finely calibrated gear ratio ranges of the reduction gear units per size
Why Choose SEW-EURODRIVE Gearmotors?
SEW-EURODRIVE is recognized worldwide for:
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Exceptional drive performance – Gearmotors optimized for efficiency and torque output.
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Modular engineering – Flexible designs with customizable mounting options and gear ratios.
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Durability & longevity – Built with strict quality standards and robust housings for demanding environments.
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Technical support & fast delivery – Backed by one of the strongest global service networks.
Whether your project requires high torque at low speeds or compact solutions in limited spaces, SEW-EURODRIVE delivers reliable results.
Maintenance & Service Tips
SEW-EURODRIVE gearmotors are engineered for longevity, but proper maintenance ensures maximum performance:
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Routine lubrication checks – Prevent wear and overheating.
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Inspect seals & housings – Especially in washdown or dusty environments.
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Monitor vibration & noise – Early indicators of misalignment or bearing issues.
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Schedule preventive maintenance – Square One offers expert motor and gear drive services in Delaware and surrounding states.
Need help? Contact our service team for maintenance, repairs, and replacement parts.
Related Blogs
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Why Buy Gearmotors from Square One?
When you purchase through Square One Electric Motors & Pumps, you get:
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Brand-new gearmotors with full manufacturer’s warranty
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Fast shipping from the nearest warehouse
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Technical support and expert guidance
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Competitive pricing with no hidden costs