Editorial Technical Reference

Speed Reducer/Gearbox

This page explains how Speed Reducer/Gearbox is classified within Machinery and Equipment Manufacturing. Technical values and manufacturer relationships are research references; confirm the current specification and supplier evidence for each order.

Technical Definition & Core Assembly

A mechanical device that reduces the input speed from a motor while increasing torque output for conveyor systems.

Representative product image. Confirm appearance and specifications with the manufacturer.

Product Specifications

Technical details and manufacturing context for Speed Reducer/Gearbox

Definition
This speed reducer, also known as a gearbox, is a critical component of the Workpiece Conveyor system. It precisely controls the speed and torque transmitted to the conveyor mechanism, ensuring smooth, controlled movement of workpieces along the production line with optimal power efficiency. The device operates by utilizing a system of gears—such as helical, bevel, or worm gears—arranged in a housing to achieve a specific gear ratio. The input shaft, connected to the motor, rotates at high speed, while the meshing gears reduce this rotational speed at the output shaft, proportionally increasing the available torque for driving the conveyor. This enables the conveyor to handle varying loads while maintaining consistent performance. The gearbox is available with a range of specifications to suit different applications. Rated power ranges from 0.12 to 45 kW, gear ratios from 5 to 100, output torque from 50 to 2000 N·m, and efficiency from 92% to 98% (per ISO 9906). Input speed can be between 750 and 3000 rpm, and noise levels range from 60 to 75 dB(A) (per ISO 3744). Operating temperature is -20 to 60 °C, and ingress protection is IP54 to IP65 (per IEC 60529). Housing material is cast iron (HT250 per GB/T 9439), and weight ranges from 15 to 500 kg. Mounting positions are M1 to M6 (per IEC 60034-7), and service factor ranges from 1.0 to 2.0 (per AGMA 2001). These values are reference ranges; actual specifications must be confirmed with the legal manufacturer or supplier for the specific model and application. The gearbox is designed for use in industrial machinery, particularly conveyor systems, and is a component that requires proper selection, installation, and maintenance to ensure reliable operation.
Working Principle
The gearbox uses a set of gears (helical, bevel, or worm) enclosed in a housing to achieve a desired gear ratio. The input shaft, driven by the motor, rotates at high speed. As the gears mesh, the output shaft rotates at a reduced speed, while torque is increased proportionally. This allows the conveyor to operate at controlled speeds with sufficient force to move workpieces. The specific gear arrangement and ratio determine the output characteristics, and the housing supports the gears and maintains alignment.
Common Materials
Cast Iron, Alloy Steel
Technical Parameters
ParameterTypical rangeNotes & selection driver
Rated Power0.12–45 kWSelect based on motor power and application demand.
Gear Ratio5–100Determines output speed and torque.
Output Torque50–2000 N·mHigher torque for heavy loads.
Efficiency92–98 %Higher efficiency reduces energy loss.ISO 9906
Input Speed750–3000 rpmMatch with motor speed.
Noise Level60–75 dB(A)Lower noise for indoor applications.ISO 3744
Operating Temperature-20–60 °CBeyond range may affect lubrication and seals.
Ingress ProtectionIP54–IP65IP65 for dusty or wet environments.IEC 60529
Housing MaterialHT250Cast iron for strength and damping.GB/T 9439
Weight15–500 kgAffects installation and support structure.
Mounting PositionM1–M6Specify orientation for oil level and cooling.IEC 60034-7
Service Factor1.0–2.0Higher factor for shock loads.AGMA 2001

Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.

Components / BOM
  • Gear Set
    Transmits and modifies rotational speed and torque through meshing teeth.
    Material: Case-Hardened Alloy Steel
  • Housing/Casing Part
    Encloses and supports the gear set and bearings, contains lubricant, and provides mounting points.
    Material: Cast Iron or Aluminum Alloy
  • Input/Output Shafts Part
    Transmit rotational force into and out of the gearbox, connecting to the motor and driven load (conveyor).
    Material: Carbon Steel or Alloy Steel
  • Bearings
    Support the rotating shafts and gears, minimizing friction and maintaining alignment.
    Material: Bearing Steel

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Speed Reducer/Gearbox.

Applied To / Applications

This component is essential for the following industrial systems and equipment:

Industrial Ecosystem & Supply Chain Structure

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: N/A (mechanical device, not pressure vessel)
other spec: Max input speed: 3000 RPM, Torque capacity: 50-5000 Nm depending on size, Efficiency: 94-98%
temperature: -20°C to 120°C (standard), up to 150°C with high-temp lubricants
Media Compatibility
✓ Industrial conveyor systems ✓ Packaging machinery ✓ Material handling equipment
Unsuitable: Submerged or high-corrosion marine environments without special sealing/corrosion protection
Sizing Data Required
  • Input motor speed (RPM)
  • Required output torque (Nm)
  • Required reduction ratio

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Gear tooth pitting and spalling
Cause: Surface fatigue due to cyclic loading, inadequate lubrication, or material defects leading to subsurface cracks that propagate to the surface
Bearing failure
Cause: Contamination from debris, improper lubrication (over/under), misalignment, or excessive loads causing wear, overheating, or brinelling
Maintenance Indicators
  • Unusual grinding or knocking noises during operation
  • Visible oil leaks or excessive heat from the gearbox housing
Engineering Tips
  • Implement a strict lubrication management program with regular oil analysis to monitor contamination, viscosity, and wear particle levels
  • Ensure proper alignment during installation and use vibration monitoring to detect early-stage imbalances or misalignment before catastrophic failure

Indicative industry ranges for design and RFQ preparation. Confirm the exact figures and applicable standard with the manufacturer before specifying.

Compliance & Manufacturing Standards

Applicable Standards
ISO 1328-1:2013 Cylindrical gears - ISO system of flank tolerance classification ANSI/AGMA 2000-A88 Gear Classification and Inspection Handbook DIN 3961 Tolerances for cylindrical gear teeth

Quoted from the published standard.

Manufacturing Precision
  • Gear tooth profile deviation: ±0.02 mm
  • Housing bore concentricity: 0.05 mm TIR
Quality Inspection
  • Gear tooth contact pattern test
  • Hardness testing (Rockwell C scale)

Manufacturers of Speed Reducer/Gearbox

3 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.

Guangdong SigGear Drive Intelligent Technology Co., Ltd.
Guangdong, CN
Founded 200820,000 m²
ISO 9001
Listed on the company's own website · profile compiled by CNFX from public sources
Hangzhou HZPT Machinery
Shanghai, CN
Listed on the company's own website · profile compiled by CNFX from public sources
Sogears
Shandong, CN
Listed on the company's own website · profile compiled by CNFX from public sources

Manufacturer listings support early research and capability understanding. They are not certification, ranking, or transaction guarantees.

Technical documentation
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Manufacturing capability
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Inspection readiness
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Frequently Asked Questions

What is the typical gear ratio range for this speed reducer?

The gear ratio range is 5 to 100, as listed in the specifications. The exact ratio should be selected based on the required output speed and torque for your specific conveyor application.

What materials are used for the housing?

The housing material is cast iron, specifically HT250 per GB/T 9439. This material provides strength and damping characteristics suitable for industrial use.

What is the efficiency range of this gearbox?

The efficiency ranges from 92% to 98%, as per ISO 9906. Higher efficiency reduces energy loss, but actual efficiency may vary with load and operating conditions.

How do I determine the correct mounting position?

Mounting positions are specified as M1 to M6 per IEC 60034-7. The correct position depends on the orientation of the gearbox in your system, affecting oil level and cooling. Consult the manufacturer for guidance.

Data Basis

Editorial classification, named public sources where available, and source-reviewed manufacturer records.

Preliminary Technical Classification
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