Industrial Gearboxes, Gear Motors & Electric Motors

Factory-direct power transmission products with selection and customization support

SMK NMRV worm gear reducer

Worm Gear Reducers

NMRV, NRV, PCRV and DRV right-angle reducers for compact, quiet speed reduction. Available in multiple ratios, sizes, mounting positions and input configurations.

  • Compact aluminum housing
  • High reduction ratios in one stage
  • Conveyors, packaging and automation
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SMK BKM hypoid gear reducer

Hypoid Gear Reducers

BKM right-angle gearboxes offer higher efficiency than many conventional worm solutions and suit continuous-duty applications.

  • High transmission efficiency
  • Compact right-angle layout
  • IEC motor or solid-shaft input options
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SMK industrial three-phase electric motor

Electric Motors

Industrial motors for standalone use or matching with SMK reducers, including single-phase, three-phase and brake motor options.

  • Aluminum housing designs
  • IEC-compatible mounting dimensions
  • Stable operation and thermal performance
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SMK worm gearbox gear motor assembly

Gear Motors

Integrated worm gearbox and motor assemblies selected to meet target speed, torque, duty cycle, voltage and installation requirements.

  • AC and DC options
  • Single-phase and three-phase packages
  • Matched, ready-to-install drive solutions
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SMK NMRV worm gearbox with UDL speed variator and three-phase motor

NMRV + UDL Variable Speed Gear Motor

Integrated NMRV worm gearbox, UDL mechanical speed variator and three-phase motor for adjustable industrial output speed.

  • Manual variable-speed adjustment
  • Compact right-angle output
  • Multiple NMRV and UDL / UDT combinations
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SMK NMRV gearbox with PC pre-stage and three-phase motor

NMRV + PC Gear Motor

Three-phase motor, PC helical pre-stage and NMRV worm gearbox assembled for extended reduction and compact right-angle output.

  • Two-stage reduction arrangement
  • Broad total ratio options
  • Multiple PCRW combinations
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SMK DRV double-stage worm gearbox assembly

DRV Double Worm Gear Motor

Two worm reduction stages with a three-phase motor for high total ratios and low-speed right-angle output.

  • Total ratios listed from 100 to 900
  • Multiple DRV size combinations
  • Detailed selection and dimension data
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SMK single-phase and three-phase compact AC geared motors

Small AC Gear Reduction Motor

Compact single-phase or three-phase geared motors with horizontal, vertical and optional brake configurations.

  • 100 W to 3700 W supplied selection range
  • Ratios from 3:1 to 200:1
  • BH.S horizontal and BV.S vertical options
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SMK high precision planetary gearboxes

Planetary Gearboxes

High-precision inline and right-angle planetary gearboxes for servo drives, automation equipment and demanding motion-control applications.

  • PAB, PABR and PPG series
  • 1 or 2 stages with ratios from 3:1 to 200:1
  • Low-backlash configurations for servo and stepper motors
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SMK WP Series cast iron worm gearbox

WP Series Worm Gearboxes

Cast-iron right-angle worm gear reducers for robust industrial drives, available with solid or hollow output arrangements.

  • Frame sizes 40 to 250
  • Standard ratios from 10:1 to 60:1
  • Solid-shaft or hollow-shaft output configurations
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SMK SWL industrial worm screw lift configurations

SWL Screw Lift Worm Gear

Worm screw jacks for controlled lifting, lowering, pushing and positioning in industrial machinery.

  • Maximum load from 9.8 to 980 kN
  • Trapezoidal-screw and ball-screw configurations
  • Foot or bracket mounting
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SMK X B and JXJ series cycloidal reducers

X/B/JXJ Series Cycloidal Reducers

Cycloidal pin-wheel reducers for compact, high-ratio industrial drives with foot or flange mounting options.

  • One-stage ratios from 9:1 to 87:1
  • Two-stage ratios from 121:1 to 1849:1
  • 0.37–55 kW rated power range
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