Henan Aifite Intelligent Equipment Co., LTD.
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Crane Travel Motors: the "mobile heart" of a 100-ton giant, the power behind millimeter-level precision
Classification:
Product Introduction
On the 100-meter track of a port gantry crane, an AC variable-frequency travel motor drives a trolley to a stop with an accuracy of ±5mm. Next to the molten steel in the metallurgical workshop,The crane's travel motor, the "industrial heart" that drives the movement of this 100-ton giant, is the core hub connecting electrical energy and mechanical displacement.

Classification Analysis: The "Scenario Adaptation Philosophy" of Four Motor Types
Crane travel motors are divided into four major technical schools based on load, speed, and environmental requirements:
1. DC Motor: The "Reliable Foundation" of Small Equipment
Core Advantages: Simple structure, high reliability, and low maintenance costs.
Parameters: Power ≤ 15kW, speed ≤ 1500rpm, compatible with 380V/440V voltage.
Typical Applications: 1-5 ton electric hoists and light gantry cranes.
2. AC Asynchronous Motor: The "Power Leader" of Small and Medium-Sized Equipment
Core Advantages: High power density (20% higher than DC motors) and high starting torque (1.5 times the rated torque).
Parameters: Power 10-50kW, speed 750-1500rpm, IP54 protection level.
Typical Applications: 10-30 ton bridge cranes. 3. AC Variable Frequency Motor: The "Precision Master" of Large Equipment
Core Advantages: Wide speed range (0.5-100Hz) and significant energy savings (30% less energy than asynchronous motors).
Parameters: Power 50-200kW, speed 0-1500rpm, compatible with vector control inverters.
Typical Application: 40-foot container quay cranes.
4. Hydraulic Travel Motor: The "Torque King" of Heavy Equipment
Core Advantages: Peak torque up to 2.5 times the rated value and strong shock resistance.
Parameters: Power ≥100kW, speed ≤1000rpm, integrated hydraulic brake.
Typical Application: Metallurgical cranes over 100 tons.
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