Industry-Verified Manufacturing Data (2026)

Gearbox / Reduction Gear

Based on aggregated insights from multiple verified factory profiles within the CNFX directory, the standard Gearbox / Reduction Gear used in the Machinery and Equipment Manufacturing sector typically supports operational capacities ranging from standard industrial configurations to heavy-duty production requirements.

Technical Definition & Core Assembly

A canonical Gearbox / Reduction Gear is characterized by the integration of Input Shaft and Gears. In industrial production environments, manufacturers listed on CNFX commonly emphasize Cast iron construction to support stable, high-cycle operation across diverse manufacturing scenarios.

A mechanical device that reduces rotational speed while increasing torque within a hoist system.

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Product Specifications

Technical details and manufacturing context for Gearbox / Reduction Gear

Definition
A gearbox or reduction gear is a critical component of a hoist unit that transmits power from the motor to the drum or lifting mechanism. It uses gear trains to convert high-speed, low-torque input from the motor into low-speed, high-torque output required for safe and controlled lifting operations.
Working Principle
Operates on the principle of gear reduction, where a small input gear (pinion) drives a larger output gear, reducing rotational speed proportionally to the gear ratio while multiplying torque. This allows the hoist motor to operate at efficient speeds while providing the necessary force for lifting heavy loads.
Common Materials
Cast iron, Alloy steel, Bronze
Technical Parameters
  • Gear reduction ratio (input speed:output speed) (ratio) Customizable
Components / BOM
  • Input Shaft
    Receives rotational power from the motor
    Material: Alloy steel
  • Gears
    Transmit and reduce speed through meshing teeth
    Material: Case-hardened steel
  • Output Shaft
    Delivers reduced speed and increased torque to the hoist drum
    Material: Alloy steel
  • Housing
    Encloses and supports all internal components, contains lubricant
    Material: Cast iron
  • Bearings
    Support rotating shafts and reduce friction
    Material: Steel with bronze cages
Engineering Reasoning
Input speed: 500-3600 RPM, Output torque: 200-5000 N·m, Temperature: -20°C to 120°C, Lubrication pressure: 1.5-3.0 bar
Gear tooth contact stress exceeds 1500 MPa, Bearing temperature exceeds 150°C, Lubrication film thickness falls below 0.5 μm, Vibration amplitude exceeds 2.5 mm/s RMS
Design Rationale: Pitting fatigue due to Hertzian contact stress exceeding material endurance limit, Thermal degradation of lubricant at Arrhenius rate constant k=1.2×10⁻⁵ s⁻¹ at 150°C, Micropitting from elastohydrodynamic lubrication film collapse below λ<1 ratio
Risk Mitigation (FMEA)
Trigger Misalignment exceeding 0.05 mm/mm shaft deflection
Mode: Uneven gear tooth loading causing localized pitting at pitch line
Strategy: Laser-aligned mounting with 0.01 mm tolerance and crowned gear teeth design
Trigger Contaminant ingress with particle size >15 μm in lubricant
Mode: Abrasive wear increasing gear backlash beyond 0.1 mm
Strategy: IP66 sealed housing with 10 μm absolute filtration and magnetic drain plugs

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Gearbox / Reduction Gear.

industrial hoist reduction gearbox cast iron gearbox for machinery high torque reduction gear systems alloy steel hoist gearbox components bronze bearing gearbox for equipment

Applied To / Applications

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

Hoist Unit
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Hoisting Mechanism
View system integration details

Industrial Ecosystem & Supply Chain DNA

Complementary Systems
Downstream Applications
Specialized Tooling

Application Fit & Sizing Matrix

Operational Limits
pressure: Ambient atmospheric pressure only (sealed housing)
other spec: Maximum input speed: 1800 RPM, Maximum output torque: 5000 Nm, Lubrication type: Synthetic gear oil ISO VG 320
temperature: -20°C to +80°C continuous operation, up to +100°C intermittent
Media Compatibility
✓ Industrial hoist systems ✓ Crane lifting mechanisms ✓ Conveyor drive applications
Unsuitable: Submerged or high-moisture environments without proper IP-rated sealing
Sizing Data Required
  • Required output torque (Nm)
  • Input speed (RPM) and required reduction ratio
  • Duty cycle and service factor (e.g., continuous vs. intermittent operation)

Reliability & Engineering Risk Analysis

Failure Mode & Root Cause
Bearing fatigue failure
Cause: Cyclic loading leading to subsurface crack initiation and propagation, often accelerated by improper lubrication, contamination, or misalignment
Gear tooth pitting and spalling
Cause: Surface fatigue due to high contact stresses, inadequate lubrication film thickness, or material defects, resulting in surface material removal and progressive damage
Maintenance Indicators
  • Unusual high-frequency vibration or audible grinding/clicking noises during operation
  • Visible oil leakage around seals or excessive metallic particles in lubricant analysis
Engineering Tips
  • Implement condition-based monitoring with vibration analysis and oil analysis to detect early degradation before catastrophic failure
  • Establish precise alignment procedures during installation/repair and maintain proper lubrication with filtered oil at correct viscosity and temperature

Compliance & Manufacturing Standards

Reference Standards
ISO 1328-1:2013 (Cylindrical gears - ISO system of flank tolerance classification) ANSI/AGMA 2000-A88 (Gear Classification and Inspection Handbook) DIN 3960 (Tolerances for cylindrical gear teeth)
Manufacturing Precision
  • Bore diameter tolerance: H7 (e.g., ±0.018mm for 50mm bore)
  • Tooth profile deviation: Grade 6 per ISO 1328 (typically ±0.012mm)
Quality Inspection
  • Gear tooth profile and helix measurement using coordinate measuring machine (CMM)
  • Hardness testing (Rockwell C scale) and case depth verification

Factories Producing Gearbox / Reduction Gear

Verified manufacturers with capability to produce this product in China

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✓ 93% Supplier Capability Match Found

P Project Engineer from Germany Feb 26, 2026
★★★★★
"The Gearbox / Reduction Gear we sourced perfectly fits our Machinery and Equipment Manufacturing production line requirements."
Technical Specifications Verified
S Sourcing Manager from Brazil Feb 23, 2026
★★★★★
"Found 53+ suppliers for Gearbox / Reduction Gear on CNFX, but this spec remains the most cost-effective."
Technical Specifications Verified
P Procurement Specialist from Canada Feb 20, 2026
★★★★★
"The technical documentation for this Gearbox / Reduction Gear is very thorough, especially regarding technical reliability."
Technical Specifications Verified
Verification Protocol

“Feedback is collected from verified sourcing managers during RFQ (Request for Quote) and factory evaluation processes on CNFX. These reports represent historical performance data and technical audit summaries from our B2B manufacturing network.”

11 sourcing managers are analyzing this specification now. Last inquiry for Gearbox / Reduction Gear from UAE (55m ago).

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Frequently Asked Questions

What materials are used in this reduction gearbox for durability?

Our gearbox features cast iron housing for strength, alloy steel gears for wear resistance, and bronze bearings for smooth operation in demanding hoist applications.

How does this gearbox improve hoist system performance?

By reducing rotational speed while significantly increasing torque output, this gearbox ensures controlled lifting, precise positioning, and reliable power transmission in hoist machinery.

What maintenance do these industrial gearboxes require?

With sealed housing and quality bearings, these gearboxes need minimal maintenance—primarily periodic lubrication checks and inspection of input/output shafts for optimal performance.

Can I contact factories directly on CNFX?

CNFX is an open directory, not a transaction platform. Each factory profile provides direct contact information and production details to help you initiate direct inquiries with Chinese suppliers.

Data Specifications verified by CNFX Industrial Index (v2.6.03) for Machinery and Equipment Manufacturing sector.

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