Gear Reducers

Q: What is the difference between helical and worm gear reducers?

Helical reducers offer higher efficiency (94–98%) and are ideal for continuous duty and higher speeds. Worm reducers provide high single-stage ratios in a compact package and can be self-locking, but have lower efficiency (50–85%) and generate more heat.

Q: What is the typical lead time for a custom gear reducer?

Standard catalog reducers ship within 1–2 weeks. Custom-engineered reducers with special ratios, shafts, or accessories typically require 4–8 weeks including design and manufacturing.

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Cat	Products Name	Price
AMS-GE-GR-11	Parallel Shaft Cylindrical Gear Reducer 1.1-6000 kW Multi-stage
AMS-GE-GR-12	Single Screw Extruder Gearbox 5.5-740 kW Hollow Output Multi-stage
AMS-GE-GR-13	High Capacity Single Screw Extruder Gearbox 8-400 kW Hollow Output Multi-stage
AMS-GE-GR-14	Conical Twin Screw Extruder Gearbox 22-110 kW Twin Output Multi-stage
AMS-GE-GR-15	Conical Twin Screw Extruder Gearbox 5.5-200 kW Twin Output Multi-stage
AMS-GE-GR-16	Helical Planetary Reducer - Low Backlash 3-5 arcmin - Ratios 3-100 - Precision
AMS-GE-GR-17	Helical Planetary Reducer - Low Backlash 3-5 arcmin - Ratios 3-100 - High Efficiency
AMS-GE-GR-18	Spur Planetary Reducer - Low Backlash 3-5 arcmin - Ratios 3-100 - Compact
AMS-GE-GR-19	Spur Planetary Reducer - Low Backlash 3-5 arcmin - Ratios 3-100 - High Torque Density

High-Efficiency Gear Reducers for Industrial Power Transmission

AIMRSE gear reducers deliver reliable speed reduction and torque multiplication for a wide range of industrial and mobile applications. Our portfolio includes helical, bevel-helical, worm, and planetary gear reducers with ratios from 3:1 to 3,000:1 and torque capacities up to 100,000 Nm. Designed for continuous duty and high shock loads, our reducers feature case-hardened and precision-ground gearing for smooth, quiet operation and extended service life.

Every reducer undergoes rigorous testing for efficiency, noise, and temperature rise. We offer standard IEC, NEMA, and custom motor mounting interfaces, as well as a variety of output shaft configurations and mounting positions. Whether you need a standard inline reducer or a custom-engineered solution for a specific machine, our application engineers provide technical support from selection to commissioning.

Configure Your Gear Reducer

Provide input power, ratio, and output torque requirements for a custom quote.

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3D CAD models available upon request.

3:1 – 3,000:1 Ratio Range

Up to 100,000 Nm Torque Capacity

≥ 94% Efficiency

IEC / NEMA Motor Interfaces

Gear Reducer Range & Technical Specifications

Select from our comprehensive lineup of industrial gear reducers. Custom ratios and output configurations available.

Series	Type	Ratio Range	Torque (Nm)	Power (kW)	Mounting	Key Features
HR Helical Inline	Helical Gear	3:1 – 200:1	50 – 18,000	0.12 – 200	Foot, Flange, Shaft	High efficiency, compact design, quiet operation
HB Bevel-Helical	Right-Angle Bevel	5:1 – 300:1	100 – 50,000	0.25 – 500	Foot, Flange, Shaft	High torque density, 90° power transmission
HW Worm Reducers	Worm Gear	5:1 – 3,000:1	20 – 8,000	0.09 – 55	Foot, Flange	High single-stage reduction, self-locking options
HP Planetary Reducers	Precision Planetary	3:1 – 100:1	10 – 1,500	0.1 – 50	Shaft, Flange	Low backlash, high torsional stiffness
HS Shaft-Mount Reducers	Parallel Shaft	5:1 – 25:1	500 – 60,000	1.5 – 250	Shaft-mount, Tie-rod	Direct shaft mounting, torque arm, ideal for conveyors
HC Cycloidal Reducers	Cycloidal Pinwheel	10:1 – 200:1	50 – 6,000	0.1 – 30	Flange, Foot	High shock load capacity, compact footprint

Typical Applications by Industry

AIMRSE gear reducers drive critical machinery across demanding industrial sectors.

Conveyor Gear Reducers

Material Handling & Conveyors

Shaft-mount and helical reducers for belt conveyors, bucket elevators, and screw feeders.

Mining Gear Reducers

Mining & Quarrying

Heavy-duty bevel-helical reducers for crushers, mills, and apron feeders.

Mixer and Agitator Reducers

Chemical & Process

Corrosion-resistant reducers for mixers, agitators, and reactor drives.

Cement Industry Reducers

Cement & Building Materials

High-torque reducers for kiln drives, vertical roller mills, and ball mills.

Food and Beverage Reducers

Food & Beverage

Washdown-duty and stainless steel reducers for food processing and packaging.

Robotics and Automation Reducers

Robotics & Automation

Low-backlash planetary reducers for servo-driven positioning axes.

Performance Validation & Field-Proven Reliability

We standardized on AIMRSE shaft-mount reducers for our aggregate conveyor systems. The reducers have operated for over 18,000 hours in dusty, high-vibration conditions with zero bearing failures. The torque arm and backstop options simplified installation and improved safety.

Cher**

18,000+ hrs continuous operation

Our mixing vessels required a high-torque, right-angle reducer with a dry-well seal to prevent product contamination. AIMRSE provided a custom bevel-helical reducer with a extended dry-well and FDA-approved lubricant. The reducer has been leak-free for over three years of continuous production.

Jica**

3+ years leak-free operation

Precision Manufacturing & Advanced Gearing Technology

AIMRSE gear reducers are manufactured using state-of-the-art gear grinding, heat treatment, and quality control processes to ensure reliable power transmission.

Case-Hardened & Ground Gearing
Helical and bevel gears are case-carburized to 58–62 HRC and precision-ground to AGMA Class 10–12 for optimal tooth contact and low noise.
High-Capacity Bearings
Tapered roller, spherical roller, and cylindrical roller bearings sized for high radial and thrust loads with L10 life exceeding 25,000 hours.
Advanced Sealing Systems
Double-lipped oil seals, labyrinth seals, and dry-well options prevent lubricant leakage and contaminant ingress in harsh environments.
Modular Housing Design
Rigid cast iron housings with precision-machined bores ensure accurate gear alignment and quiet operation across all mounting positions.

Gear reducer assembly and testing Fig. 1. Helical gear reducer undergoing final assembly and efficiency testing.

Custom Reducer Engineering & Motor Integration

Need a non-standard ratio, special output shaft, or integrated motor? Our engineering team provides:

Custom Ratio Design: Exact ratio gearing for specific machine timing or speed requirements
Special Output Configurations: Hollow shafts, shrink discs, splined outputs, or custom flanges
Motor Integration: IEC, NEMA, or servo motor adapters with pre-assembled and aligned gearmotors
Accessory Packages: Backstops, torque arms, cooling fans, and condition monitoring sensors
CAD & STEP Models: Instant download of 3D models for design verification

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Reducer Repair & Remanufacturing Services

Extend the life of your existing gear reducers. Our services include:

Inspection & Evaluation: Disassembly, cleaning, and detailed condition assessment
Gear & Bearing Replacement: New gearing and bearings to restore original performance
Seal & Gasket Replacement: All new seals and gaskets to eliminate leakage
Housing Repair: Machining of worn bores and faces to restore alignment
Performance Recertification: Full load testing and efficiency verification

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Frequently Asked Reducer Questions

How do I select the correct service factor for my application?

Service factor accounts for the type of prime mover, duty cycle, and shock loading. For uniform loads (fans, conveyors), use SF = 1.0–1.25. For moderate shock (mixers, extruders), use SF = 1.25–1.5. For heavy shock (crushers, mills), use SF = 1.5–2.0. Our application engineers can assist with proper selection.

What is the difference between helical and worm gear reducers?

Helical reducers offer higher efficiency (94–98%) and are ideal for continuous duty and higher speeds. Worm reducers provide high single-stage ratios in a compact package and can be self-locking, but have lower efficiency (50–85%) and generate more heat.

Can you provide gear reducers with integrated electric motors?

Yes. We offer complete gearmotor assemblies with the reducer factory-mounted and aligned to an electric motor. Specify motor power, voltage, frequency, and frame size for a complete quotation.

What mounting positions are available?

Most AIMRSE reducers can be mounted in any orientation—horizontal, vertical, or inverted. For some mounting positions, the oil level, breather, and drain plug locations must be adjusted. Specify your required mounting position when ordering.

What is the typical lead time for a custom gear reducer?

Standard catalog reducers ship within 1–2 weeks. Custom-engineered reducers with special ratios, shafts, or accessories typically require 4–8 weeks including design and manufacturing.

Do you offer washdown or stainless steel reducers?

Yes. We offer reducers with stainless steel housings, nickel-plated surfaces, and food-grade lubricants for washdown environments in food, beverage, and pharmaceutical processing.

Select Your Industrial Gear Reducer

From standard inline helical reducers to custom-engineered bevel-helical solutions, our application engineers will help you select the optimal reducer for your power transmission requirements. Provide input power, ratio, and output torque for a detailed quotation and 3D CAD model.

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For fastest service, specify motor power (kW or HP), input speed (RPM), and required output speed or ratio.

Related Products

Disclaimer: All products are for industrial B2B use only. Specifications subject to change without notice.

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