20/54P/DS23000 Electric Drive Monorail Crane Reducer

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

3 year

Product details

DX120/54P/DS23000 Electric Drive Monorail Crane Reducer Technical Specification

(High Torque Gearbox for Crane Applications)

1. Basic Specifications

【表格】

Parameter Specification Remarks

Model DX120/54P/DS23000 Customizable for multi-brand cranes

Type Planetary Gearbox Three-stage planetary transmission, efficiency ≥95%

Input Power 15-75 kW (adjustable) Compatible with motor power range

Output Torque 23,000 N·m (rated)30,000 N·m (peak) 150% short-term overload capacity

Gear Ratio 23:1 ~ 120:1 (selectable) Customized based on hoisting speed needs

Speed Range Input: 500-3000 rpmOutput: 5-130 rpm Low-speed, high-torque output

Weight Approx. 850 kg (with lubricant) Cast iron housing, high-rigidity structure

2. Structural Features

• High-Strength Design

• Gear material: 20CrNiMo alloy steel, carburized and quenched (HRC58-62)

• Bearings: SKF/FAG imported double-row tapered roller bearings (30% higher load capacity)

• Housing: Split design for easy maintenance and gear replacement

• Sealing & Lubrication

• Dual sealing: Lip seal + dust cover (IP65 protection)

• Lubrication: Forced circulation (optional oil/air cooling)

• Oil requirements: ISO VG320~460 industrial gear oil, cleanliness NAS 7

• Installation Compatibility

• Output flange: Complies with ISO 9409-1, fits various crane drums

• Input interface: Supports direct motor coupling or shaft connection

3. Performance Advantages

• High Torque Density

• 25% higher torque output than standard reducers in the same volume, ideal for heavy-duty hoisting

• Low Noise Operation

• Gear mesh noise ≤75 dB(A) (1-meter distance), meets EU CE standards

• Long Service Life

• Designed for ≥10 years of continuous operation (≥100 million fatigue cycles for key components)

4. Applications

• Industrial Crane Systems

• Electric monorail cranes

• Bridge crane trolley mechanisms, gantry crane hoisting systems

• Special Work Environments

• Port container handling, steel mill furnace lifting, nuclear power plant equipment maintenance

• High-temperature/dusty environments (optional heat-resistant coating and dust-proof sealing)

5. Selection & Matching Guide

• Motor Matching Principles

• Motor power must be ≥1.2× the reducer’s rated input power

• Recommended motor type: Variable frequency three-phase asynchronous motor (IP55 protection)

• Gear Ratio Calculation Example

• Requirement: Hoisting speed 0.5 m/min, drum diameter 400 mm

• Calculation:

• Drum RPM = (Hoisting speed × 60) / (π × Drum diameter) ≈ 23.9 RPM

• Required ratio = Motor speed (e.g., 1500 RPM) / 23.9 ≈62.8:1

• Selected model: DS23000-63 (standard ratio 63:1)

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Ningbo Hengnuo Hydraulic Drive Co.,Ltd

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3 year

Main Product: hydraulic motor, gear box, hydraulic pump , hydraulic valve , hydraulic winch, hydraulic system

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