Helical Gear Reducer

R Series

Innovation, compatibility, built for the future — next-generation drive solutions.

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LEONHARD helical gear reducer R series

Compact Gear Motor

K Series · 6 W–90 W

Durable drives for compact equipment.

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LEONHARD miniature gear motor

Right-angle gear reducer

90° drive

90° power transmission for tight machine layouts.

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LEONHARD right-angle gearbox
Leonhard
Leonhard

Focused on power transmission,
keeping equipment worldwide running more stably

In industrial equipment, the drive system decides not only machine performance, but also the customer’s uptime, operating cost and brand reputation. Whether the equipment runs in a Southeast Asian food plant, a Middle East conveyor line, a European automation cell or a South American packaging machine, a stable drive is the core of long-term operation.

Leonhard is a high-tech enterprise focused on the R&D, manufacturing and sales of gear motors, gearboxes, brushless DC motors, variable-frequency drives and industrial drive systems. With manufacturing bases in China and five overseas sales and service centers in Indonesia, Thailand, Vietnam, Egypt and the Philippines, Leonhard has built a sales and service network covering more than 50 countries and regions, delivering stable, efficient and reliable power-transmission solutions that help customers raise equipment performance, cut operating cost and keep machines running for the long term.

LEONHARD

Powering Your Equipment. Protecting Your Reputation.

Drive your equipment. Protect your brand.
A trusted power-transmission partner for equipment manufacturers worldwide.

Stable quality

Core processes are made in-house under a strict quality system, so products run stably over the long term.

Fast delivery

Four plants, 1 million units of annual capacity and 100,000 units of standing stock support stable supply and fast shipment.

Custom engineering

OEM, ODM and non-standard builds, with samples in 3–7 days for diverse equipment needs.

Global service

Five overseas centers provide local sales, technical support and after-sales service — faster communication, faster response.

Long-term partnership

Drive solutions built for long, stable equipment life — growing with customers, winning together.
Dongguan production base Shenzhen production base Suzhou production base Vietnam production base

Manufacturing strength: four production bases, million-unit annual capacity

To meet growing global demand, Leonhard has built a manufacturing system covering mainland China and Southeast Asia. With scaled production, standardized management and a complete supply chain, we keep supplying global customers with stable volume, fast delivery and flexible customization.

> 50,000㎡ Total production area
> 1,000,000 Annual capacity (units)
> 100,000 Ready stock (units)

Global service network

Global coverage, local service

Global service network
Core processes
Core processes

From the manufacturing source,
quality in every unit

Quality is not inspected in — it is manufactured in. Leonhard keeps core processes in-house: turning, milling, grinding, hobbing, heat treatment, winding and final assembly. Core CNC operations stay in our own plants so every part is controlled end to end.

These processes support a design life of more than 8 years, with stable output even in long, continuous industrial duty.

Dual precision hobbing Higher gear-mesh accuracy

Two precision hobbing passes raise mesh quality and keep noise down in batch production.

Dual heat treatment Tooth-root case depth > 1 mm

Two heat-treatment cycles harden the tooth root beyond 1 mm for long service life under load.

Hard-face hobbing Wear resistance and load capacity

Hard-face hobbing improves wear life and the load the gear set can carry.

Gear accuracy Batch grade 6

Gears are produced to batch grade 6, supporting quiet running at ≤55 dB.

Tooth thickness 20% thicker than common gears

Teeth are about 20% thicker than ordinary gears, adding strength in continuous duty.

Module design One size larger than typical, more stable transmission

Module is one step larger than the common choice (e.g. 1.25 vs 1.0), improving transmission stability.

Quality system

Leonhard’s core competitiveness

Every Leonhard product uses high-quality core components

100% copper windings

Pacific F-class PEW 155°C magnet wire. Inter-turn withstand 2500 VAC, limit temperature 180°C — not E-class 130°C stock used by many peers.

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Grade 470 high-flux silicon steel

Taiwan Chuan-Dian grade 470 laminations. About 7% higher efficiency at the same power, with temperature rise that can stay below 23°C.

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TPI P5 low-noise bearings

TPI P5 precision bearings — a top-ten global bearing maker and a leading domestic brand — specified for life and quiet running.

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Triple-lip TC skeleton oil seal

Custom three-lip TC seals (vs. common dual-lip) improve sealing by about 33%. H073 compound rated to +150°C and −40°C.

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Reinforced gear transmission

20CrMoTi alloy gears, dual hobbing and dual heat treatment, teeth ~20% thicker and one module size larger for 8-year design life.

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Inspection 1

24-hour continuous load aging test

Inspection 2

100% complete-unit performance test

Inspection 3

100% outgoing inspection