Description
 | Motor is a kind of equipment that converts electric energy into mechanical energy.It USES an electric coil (i.e., the stator winding) to generate a rotating magnetic field and is used for rotor (such as a squirrel cage closed aluminum frame) to form the magnetic power rotation torque.Motor by using the power divided into dc motor and ac motor, electric power system in most of the motor is ac motor, can be synchronous motor or induction motor (motor stator magnetic speed and rotor rotating speed is not synchronized rate).The motor is mainly composed of stator and rotor, and the direction of force motion in the magnetic field is related to the direction of current and the direction of the magnetic induction line (magnetic field direction).The operating principle of the motor is the effect of the magnetic field on the current force, which makes the motor rotate. |
Hoist mechanism is the major and most basic institutions, crane hoisting motor operation characteristics are: Hoist inertial load is small, the acceleration torque is very small, only a 10% to 20% full of stable operation torque, and the average starting torque of the motor is usually 1.6 1.8 times the rated torque, starting time is short.The motor is in the intermittent working system – the S3 working system.In hoisting machinery design, the choice of the motor is an important content, the choice of motor mainly refers to the motor insulation class, rated power, rated voltage, rated speed, type and form, the protection grade, working system, speed control, power cycle of the project such as selection, and the Hoist of the most important is the insulation level of the machine, working system, the selection of the protection grade and motor power calculation |  |
SYM HOIST & TOWER CRANE QUIPMENT CO.,LTD located in Shenyang China is one of the biggest supplier and export of tower crane, luffing crane , topless crane , passenger hoist along with the spare parts for them. With 20 years’ experience on tower crane rent , installation , repair and reconstruction, the company has more than 50 experienced mechanical and electrical engineer responsible for the installation guide, failure diagnosis, maintainance and reconstruction for the tower craneattheconstructionsite.
Having a long-term and good cooperative relationship with China’s most famous manufacturer of tower crane and passenger hoist like YONGMAO, SANYO, Sichuan SCM, Zoomlion, GJJ, BAODA,etc. The company can offer you the best quality original tower crane and passenger hoist with most competitive price.
We are sure we will be your best choice .
 | The largest parts supplier and the most professional service |
Cooperation with more than 10 famous suppliers,like YONGMAO, SANYO,Sichuan SCM,zoomlion,GJJ,BAODA,etc. | |
More than 20 years’ experience on tower crane and passenger hoist parts. | |
| More than 50 experienced mechanical and electrical engineer. | |
| 100% Original tower crane and passenger hoist parts. |
1.Q:Are you a Manufacturer or Trading company?
A: We are a trading company and have our own factory. We have both the price advantage of the factory and the thoughtful service of the trading company; and the advantage of taking responsibility.
2.Q:How about your after-sale service?
A: we have quality guarantee with half-one year once you purchase products from us.
3.Q:Can you satisfy my special requirement?
A:Definitely!We can make the products based on your requirement.
4.Q:Can I have sample to test the quality?
A:Yes, you can buy any sample to test the quality,our MOQ is 1 set.
5.Q:How do you transport cargoes?
A:We will transport the cargoes by container and bulk cargo ship, by sky and express.
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