Other Gearbox & Motor
Reliable solution for
Power Transmission
For years, ANJO has specialized in the R&D and manufacturing of a comprehensive range of power transmission equipment—specifically gear reducers and electric motors. Leveraging mature manufacturing processes and rigorous quality control standards, we engineer complete transmission units and complementary components designed to perform optimally across a wide variety of operating conditions.
Product Overview
Industrial motion control requires balancing torque density, spatial constraints, and transmission efficiency. NMRV series worm gear reducers utilize an aluminum alloy housing (sizes 030-090) or cast iron (sizes 110-150) paired with a hardened bronze worm wheel and alloy steel worm shaft. Epicyclic planetary gearboxes utilize coaxial sun, planet, and ring gear arrangements hardened to 58-62 HRC. Both series provide reliable torque multiplication and speed reduction across continuous-duty industrial environments.
NMRV Series: Square-body aluminum housings, versatile mounting via torque arms or feet, optional plug-in output shafts, and modular PAM motor flanges (IEC standards).
NRV Series: Shaft-input worm gear reducers without an integrated motor flange, driven via belt or coupling.
PC+NMRV / NMRV+NMRV Combinations: Helical-worm pre-stage units and dual-stage gearboxes achieving higher reduction ratios up to 10000:1.
Inline Planetary Gearboxes: Spur or helical planetary gears configured in 1-stage, 2-stage, or 3-stage reductions with precision output shafts or flanged interfaces.
Right-Angle Planetary Gearboxes: Bevel-planetary hybrids designed for tight spatial clearance in servo-driven axes.
Technical Specifications
|
Parameter |
NMRV Worm Gear Reducer |
Epicyclic Planetary Gearbox |
|
Frame Sizes |
030, 040, 050, 063, 075, 090, 110, 130, 150 |
40, 60, 90, 120, 160 (Metric standard footprints) |
|
Reduction Ratios (i) |
5, 7.5, 10, 15, 20, 25, 30, 40, 50, 60, 80, 100 |
3 to 100 (Single & multi-stage configurations) |
|
Output Torque Capacity |
Up to 1800 Nm |
Up to 2000 Nm |
|
Backlash Precision |
15-30 arcmin |
<= 3 arcmin (1-stage), <= 5 arcmin (2-stage) |
|
Transmission Efficiency |
50%-90% (Ratio & speed dependent) |
94%-98% per stage |
Key Features
Interchangeable Mounting Dimensions: Standardized bolt patterns and housing footprints matching universal market configurations.
Optimized Thermal Dissipation: Cast aluminum cooling fins maximize surface area for continuous operation without forced ventilation.
Low Backlash Precision: Ground planetary teeth minimize angular transmission error under reversing loads.
Self-Locking Capability: Worm gear configurations with high reduction ratios prevent back-driving under static loads.
Conveyor Systems: Belt conveyors, roller tables, and sorting lines requiring high starting torque.
Packaging Machinery: Form-fill-seal machines, labeling units, and cartoners.
Food & Beverage Processing: Washdown-compatible conveyors, mixers, and bottling lines.
Automation & Robotics: Servo-driven axes on gantry robots, automated warehousing, and CNC tool changers.
Materials & Construction
The company conducted a competitive advantage analysis to identify its strengths and weaknesses compared to its rivals.
Housing
Die-cast aluminum alloy (A380/ADC12) for sizes 030-090; grey cast iron (HT250) for sizes 110-150 and heavy-duty planetary carriers.
01
Worm Shaft
20CrMnTi alloy steel, carburized and quenched to case hardness 58-62 HRC, ground profile.
02
Worm Wheel
ZCuSn10Pb1 (phosphor bronze) centrifugal cast ring mated to a structural steel core.
03
Planetary Gears
40Cr or 20CrMnTi alloy steel, precision gear hobbing followed by profile grinding.
04
Seals & Bearings
Deep groove ball bearings and NBR/Viton double-lip oil seals.
05
Manufacturing & Quality Control
Machining
CNC horizontal machining centers maintain bore tolerances within +/- 0.01 mm and coaxiality within 0.015 mm.
01
Gear Metrology
Advanced gear inspection centers verify tooth pitch, helix angle, and contact pattern.
02
Testing Protocols
100% factory load testing for noise decibel levels (< 65 dB at 1500 RPM), thermal rise monitoring, and pressure decay leak checks on assembled housings.
03
Traceability
Laser-etched serial numbers link each unit to material test reports and heat treatment logs.
04
Customization & OEM
Shaft Modifications
Custom output shaft diameters, keyways, splines (DIN 5480), and hollow shafts with shrink discs.
Flange Adaptations
Custom motor adapter plates matching non-standard servo or stepper motor pilot diameters and bolt circles.
Lubrication Options
Food-grade synthetic lubricants (NSF H1) or high-temperature greases pre-filled for specific operational environments.
Surface Finishes
Epoxy-based powder coatings, anti-corrosion chemical conversion coatings, or stainless steel output sleeves.
Selection Guide
Determine Required Torque (T2)
Calculate load torque, factoring in safety service factors (SF = 1.2 to 2.0 based on daily operating hours and shock loads).
Calculate Gear Ratio (i)
Divide input motor speed (n1) by required output speed (n2).
Select Gearbox Type
Choose worm gearboxes for right-angle layouts, self-locking needs, and budget-sensitive continuous sliding loads. Choose planetary gearboxes for high torsional rigidity, low backlash, and high efficiency in servo systems.
Verify Thermal Limit
Confirm that continuous thermal capacity exceeds operating ambient conditions, especially for high-ratio worm drives operating above 60% duty cycles.