Durable
8-year design life. Every gear motor is load-aged for 24 hours and noise-tested before dispatch. Outgoing failure-rate target ≤1‰.
Products
Geared motors, speed reducers, motors, inverters and precision motion — sized as one system from 6W–3.7kW.
6W–3700WRatios 1:3–1800:1Torque to 1270 N·m100,000-unit stock24h aging≤55 dB8-year design life
Gear motors
Series at a glance
Family cards with range, the duty they are built for, then two actions — quote or catalog.
Compact gear motors (6 W–90 W)
K series for compact equipment. 6W–90W, ratios 1:3–1:180, 1φ 110/220V and 3φ 380V.
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Standard gear motors (120 W–400 W)
6GU 120–250W and GH/GV 0.1–0.4 kW. GH foot / GV vertical, ratios 3:1–1800:1.
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High-power gear motors (750 W and above)
GH/GV 0.75–3.7kW main drives. Output torque to 1270 N·m.
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Right-angle gear reducers
90° output for tight frames. 6W–3700W, built in Dongguan — not a bought-in head.
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Worm gear reducers (RV series)
Self-locking high ratios 7.5:1–100:1. IEC B5/B14 inputs, five output kits, torque class to 1500 N·m.
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Helical gear reducers
RC / FC helical, SC worm, KC bevel. Frames 07–167. Foot, flange and double-shaft versions.
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Planetary gear reducers
Low-backlash, high torque density for servo and stepper axes. Backlash class quoted from engineering.
Product details →Motors & control
Matched motors and electronics
Motors
Aluminum-frame and cast-iron-frame three-phase induction motors. Copper windings, IP55, Class F, B3/B5/B14.
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Inverters / VFD
Speed, energy saving and soft start. Modbus-RTU, plus US/SS/XF/FP dedicated drivers for 6W–200W motors.
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Custom gear reducers
Shafts, voltage 24–660V, −60°C to 600°C, 3000–5000 m, IP68, encoders, linear and clutch-brake builds.
Product details →From packaging halls to warehouse conveyors
LEONHARD® gear-motor series are built for high output torque and high efficiency across packaging machinery, automation equipment, food processing, logistics conveyors, woodworking and textile lines — more than 100 application types. We work with the machine builder to size the drive, not just ship a catalogue code.
Performance sits on durability and quiet running: 20CrMoTi alloy gears, dual heat treatment and dual precision hobbing, case depth ≥1 mm at the tooth root; TPI P5 bearings and triple-lip oil seals sized for an 8-year design life; lifetime grease so the unit does not go back for lubrication.
53,000+ customers already run these drives. Named logos are used on this site only where written approval exists.
Eight reasons to specify LEONHARD
Materials
TPI P5 bearings, Chuan-Dian 470 silicon steel, Pacific F-class 155°C PEW magnet wire (inter-turn 2500 VAC).
Quiet
Batch grade-6 gears, dual hobbing, dual heat treatment. Noise-room limit ≤55 dB — about a desk fan.
Maintenance-free
Sinopec Taiwan H-730-1 grease, −50°C to +180°C, sealed for life. No relubrication visit.
Sealed
Custom triple-lip TC seals in H073 compound. Standard IP55; IP68 (20 m submersion) on request.
Configurable
Voltage 24–660V, −60°C to 600°C, 3000–5000 m, encoders 30–2500 ppr, inverter motors 3–120 Hz.
Fast ship
About 100,000 units in stock. Common wattages leave Dongguan the same day or the next.
One chain
Motor × reducer × VFD × controller from one plant, so matching and spare parts stay simple.
Core components vs typical market grade
What sits inside the housing — bearings, steel, wire, seals, gears — versus typical market grade.
| # | Part | LEONHARD | Typical market |
|---|---|---|---|
| 1 | Bearings | TPI P5 low-noise | P0 / P6 |
| 2 | Stator steel | Chuan-Dian 470 (miniature) / 600 (small-frame) | Grade 1000 or lower |
| 3 | Magnet wire | Pacific F-class PEW 155°C | E-class 130°C |
| 4 | Oil seal | NAK / Tongyuan TC triple-lip, H073 | Dual-lip NBR |
| 5 | Brake | Taiwan HWA / Chengdu Ruide, ~200,000 cycles | Generic |
| 6 | Gears | 20CrMoTi, grade 6, HRC60, teeth ~20% thicker, module one size up (1.25 vs 1.0) | Carbon or low-alloy steel |
| 7 | Grease | H-730-1, −50°C to +180°C, lifetime | Calcium / lithium soap |
| 8 | Housing | ADC10 aluminium, 600-ton die-cast, 200°C outdoor powder | Remelt aluminium |
Get a selection scheme or a datasheet
Torque tables, frame sizes and 7-step duty data. Technical reply on business days.