MD Type Electric Hoist

MD Type Electric Hoist

Weihua Crane Machinery Co., Ltd.

Address:Industry Park, Changyuan, Henan, P.R.C


MD-type wire rope hoist is two-speed electric hoist compared to CD electric hoist, there are fast and slow speed, especially for fine handling working places. With the advantages of extensive use, compact structure, design and manufacture size equalization, parts versatility, easy operation, etc. it can be not only installed separately on I-steel beam, but also can be installed in single-beam, double-beam, cantilever and gantry cranes.
MD-type wire rope electric hoist has two lifting speed, high and low speed ratio is of 1:10, and it is especially suitable for occasions require fine adjustment work. Electric hoist is also including fixed and run type, fixed type electric hoist often supporting the use with electric hoist double girder overhead crane. Run type electric hoist supporting the use of electric single girder crane, electric suspension crane, gantry crane, jib crane and others, constituting a variety of hoist cranes.
MD Type Electric Hoist
Our company has nearly 30 years of production and design history of electric hoist, has accumulated a wealth of experience in electric hoist design and production, and can also design and produce non-standard electric hoist adapt to various conditions.

Weihua Crane is professional material handling equipment manufacturer and servicer with largest production in global. Provide you with overhead crane, gantry crane, electric hoist, etc. of safe, reliable and efficient crane solutions and services.


MD-type wire rope electric hoist is mainly composed of: Double-lifting motor, reducer, drum device, hook set, electric control system, traveling trolley, safety devices and other components.
Lifting Motor
ZDS 0.8 ~ 13KW motor is conical rotor motor with two-speed slow and fast, slow and fast speed ratio is 1:10, standard motor insulation class B, protection class IP44, can be also made F&H- insulation class and IP54&IP55 protection class according to conditions requires. The motor has such characteristics: good heat dissipation, long life use, safe and reliable, can work long hours at high intensity workplace.

ZDS conical rotor motor
Lifting Gear Motor
Lifting gear motor is the core component of electric hoist:
1. Box and box cover processed by good anti-vibration performance cast gray iron HT200. Using high quality rubber ring during gear motor assembly, effectively prevent oil leakage.
2. Gear and gear shaft is precision machined by low-carbon alloy steel 20CrMnTi. Reach the standard of large carrying capacity, high torque transfer.
Drum Device
Drum device consists of drum shell, rolls, intermediate shaft, guide rope device and limit guide rod device. Reel device installed lifting reducer in the left, hoisting motor in the right. Drum through the right bearing cap fitted on the front part of the lifting motor. Through flexible coupling, intermediate shaft and rigid coupling, the motor shaft input the driving force to speed reducer shaft end. The drum fitted with guide rope on it.
Hook Set
Hook part have two types same with CD electric hoist: Single pulley type and double pulley type. Hook set material is DG20, safety factor is greater than 5.
Single-pulley hook             Double-pulley hook
Trolley traveling mechanism
Trolley traveling mechanism includes driven traveling trolley and driving traveling trolley. Traveling trolley composed of traveling motor, reducer, wallboard, driving& driven wheel set, flat nut, bolt and adjusting pad.
Electrical Parts
MD Electric Hoist Electrical Parts
Electrical part of MD electric hoist controlled by the control box. Electrical components in control box generally including CHNT, Schneider, Siemens and other brands of low-voltage. Power supply is three-phase less than 690V, frequency of 50 ~ 60HZ. Electrical control type includes switch direct control and inverter frequency control.
MD-type wire rope hoist operations including: cable handle ground operation and remote control operation, both have two-speed (slow and fast) operation. It even can be installed with cabin operation.
Safety Device
MD-type wire rope hoist protection functions including: overload protection, the upper and lower limit protection, no-voltage protection, ground fault protection and short circuit protection.
Considerations When Using
Within operator walking distance and sight range, there should be no obstructions and heavy floating debris on the route the lifting weight traveling through.
Up and down, left and right directions action of hand control buttons should be accurate and sensitive, motor and reducer should be no abnormal sound.
Brakes should be sensitive and reliable.
There should be no foreign matter on the hoist traveling orbit.
Up and down limit action should be accurate and sensitive.
Hook rotation should be flexible in the horizontal and vertical directions; hook pulley should be with flexible rotation.
Wire rope should be no obvious cracks, neatly arranged on the reel, no appearance disengage the pulley groove, chaotic twist and fold, etc. with good lubrication.
Electric hoist working environment temperature is -25 ~ + 40 ℃.
Electric hoist shall not be side loading heavy objects, overload use is forbidden.

Technical Data

MD Type Electric Hoist SketchMD Type Electric Hoist Technical Data

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Weihua Cranes Machinery Co., Ltd.

Weihua Crane standard
Weihua Cranes started since the year 1988; it is professional material handling equipment manufacturer and servicer with largest production all over the world. With Weihua Cranes historical influence, “China Crane Town” (which covers more than 2/3 crane market in China) developed in the area around Weihua Cranes headquarter.
Weihua Cranes main businesses are researching, developing, manufacturing and sales of all kinds of lifting equipment. We have passed the ISO9001 quality system certification, ISO14001 environmental management system certification, OHSAS18001 occupational health and safety management system certification, CE certification, etc.
Weihua Cranes advantages and differences with other crane manufacturers are that we have professional crane team to provide you with safe, reliable, efficient crane solutions and services, and as far as possible to reduce your cost. Crane your business, let’s develop together!


Excellent Product and Solutions

Weihua Cranes become one of general hoisting machinery manufacturing industry leader with the largest production and sales volume. We can provide electric hoists, single/double beam overhead cranes, gantry cranes, and such varieties of lifting equipment 10 serious more than 200 types. The lifting capacity of the overhead crane can achieve 1000t, and the gantry crane 900t, to meet all kinds of project need.
Cranes is committed to provide total optimized crane program solution and perfect service to help customer to save cost and improve efficiency.


Advanced R&D | Strong Q&C | Production capacity

Weihua Cranes has Technology Testing and Inspection Center authorized by the state, post-doctoral research station, obtains 283 technology patent certificates and inventions, R & D team of Weihua with 600 people and with Shu-zi Yang (academician from the Chinese Academy of Engineering) as the foregoer, is the biggest one in general purpose crane industry in China.
Cranes now adopted the “lean production management”, the undaunted testing and outstanding market performance, ensuring Weihua Cranes stand out as the leading brand within crane industry. Weihua Cranes continuously make the innovation on technical and strict on QC management to keep the products quality steady improving.

Weihua Cranes total asset is of 0.78 billion US Dollar, over 6000 employees, covers an area of 3.42 million square meters, one of Weihua Cranes workshop is the largest within the whole world crane industry. A varieties of 1700 sets manufacturing and testing equipment, including machining, heat treatment, welding, assembly, testing and packaging shipped metering and other ancillary equipment with a full range of advanced production scale and production capacity.

Outstanding Marketing Performance & Long-term Partner

Production and sales of overhead and gantry cranes won the first in China for continuous 8 years. And now, total production amount of Weihua Cranes products achieve world first. Weihua Cranes has developed strategic partnership with Siemens, GH Spain, Demag, SEW, Schneider, etc.

Weihua Cranes are widely used in machinery manufacturing, iron and steel metallurgy, nuclear industry of mining, water conservancy and hydropower, roads and railways, electric power, automobile manufacturing, petrochemical, port logistics, shipbuilding and other material handling, etc. We have successfully exported to more than 90 countries and regions such as the United States, Great Britain, Russia, India, Brazil, Peru, South Africa, Mongolia, South Korea, Australia, Southeast Asia, the Mid-East, etc. And get well reputation.
Weihua Cranes with strong capacity, focus on customer service, provide with first-class quality, safety and reliable products, create more and more value for customers, these are the reasons we set-up stable and long-term relationship with our customers.


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