
Company Profiles
Zhejiang Donghai Reducer is a leading manufacturer of gear motor and gearbox.
Since 1991, we have specialized in manufacturing a wide range of gear motor and gear box including:
- helical gear motor
- helical bevel gear motor
- parallel shaft helical gear motor
- helical worm gear motor
- hoist drive
- heavy-duty helical gearbox
- heavy-duty helical bevel gearbox
- gear motor for car parking system
- sprial bevel gearbox

Product Description
European type low-noise hoist drive is used in the fully intelligent control operation crane system.The hoist drive is composed of strengthened aluminum alloy housing,motor, intergrated thermal protection and brake.
The housing of reducer is made of low-pressure cast reinforced aluminum alloy to ensure that the aluminum strength is not deformed and its weight is light. The spline output shaft (European standard) and hard tooth helical gear are made of high-quality 20CrMnTi gear steel. The carburizing treatment ensures the gears' hard teeth surface strength.Then gears are made by CNC precision grinding to ensure the technical requirements of gear hardness and accuracy. The fully enclosed combination hoist drive has a mechanical transmission efficiency up to 98% and a running noise less than 60 dB (A), suitable for outdoor working condition.
The low-noise housing of motor is heat-drawn aluminum alloy, withnheat dissipation and sound-absorbing system. European type rotor skew-slot stator is precisely wound with copper wire, and is deeply dipped in paint. Insulation class F and H, protection class IP55, working system S1 operation, suitable for outdoor working environment +80 ºC to -25 ºC, not suitable for direct corrosive objects. Frequency conversion could reach to 110Hz, start frequency 1Hz.
Product Show

Product Specification
Lifting Capacity | Lifting Speed | Drum Diameter | Motor Power | Protection Class | Frequency |
Up to 3.2 ton (dual speed) | 0.66/4.0;0.8/5.0;1.0/6.3;1.3/8.0 m/min at reeving 4/1 | 140mm | 0.37/2.5;0.45/3.2;0.6/4.0 Kw (12/2 Poles) | IP55 | 50HZ |
Up to 6.8 ton (dual speed) | 0.66/4.0;0.8/5.0;1.0/6.3;1.3/8.0 m/min at reeving 4/1 | 170mm | 0.8/4.9;1.0/6.1;1.3/7.7;1.6/9.8 Kw (12/2 Poles) | IP55 | 50HZ |
Up to 12.5 ton (dual speed) | 0.66/4.0;0.8/5.0;1.0/6.3;1.3/8.0 m/min at reeving 4/1 | 266mm | 1.2/7.6;1.5/9.5;2.0/12.5 Kw (12/2 Poles) | IP55 | 50HZ |
Up to 20 ton (dual speed) | 0.66/4.0;0.8/5.0;1.0/6.3;1.3/8.0 m/min at reeving 4/1 | 295mm | 2.0/12.5;2.6/16.0 Kw (12/2 Poles) | IP55 | 50HZ |
Up to 25 ton (dual speed) | 0.53/3.4;0.65/4.23;0.83/5.35;1.03/6.7 m/min at reeving 4/1 | 325mm | 2.0/12.5;2.6/16.0 Kw (12/2 Poles) | IP55 | 50HZ |
Up to 40 ton (dual speed) | 0.6/2.6;0.8/3.3;1.0/4.2 m/min at reeving 4/1 | 405mm | 5/20 Kw (8/2 Poles) | IP55 | 50HZ |
Lifting Capacity | Lifting Speed | Drum Diameter | Motor Power | Protection Class | Frequency |
Up to 3.2 ton (dual speed) | 1.2/4.8;1.6/6.0;1.92/7.6;2.4/9.6 m/min at reeving 4/1 | 140mm | 0.72/3.0;0.96/3.6;1.2/4.8 Kw (12/2 Poles) | IP55 | 60HZ |
Up to 6.8 ton (dual speed) | 1.2/4.8;1.5/6.0;1.9/7.6;2.4/9.6 m/min at reeving 4/1 | 170mm | 1.4/5.9;1.8/7.3;2.3/9.1;2.9/11.5 Kw (12/2 Poles) | IP55 | 60HZ |
Up to 12.5 ton (dual speed) | 1.2/4.8;1.5/6.0;1.9/7.6;2.4/9.6 m/min at reeving 4/1 | 266mm | 2.3/9.1;2.9/11.5;3.7/15.0 Kw (12/2 Poles) | IP55 | 60HZ |
Up to 20 ton (dual speed) | 1.2/4.8;1.5/6.0;1.9/7.6;2.4/9.6 m/min at reeving 4/1 | 295mm | 3.7/15;4.8/19.2 Kw (12/2 Poles) | IP55 | 60HZ |
Up to 25 ton (dual speed) | 1.02/4.1;1.3/5.1;1.6/6.4;2.0/8.1 m/min at reeving 4/1 | 325mm | 4/15;4.8/19.2 Kw (12/2 Poles) | IP55 | 60HZ |
Up to 40 ton (dual speed) | 0.8/3.2;1.0/4.0;1.3/5.1 m/min at reeving 4/1 | 405mm | 6/24.2 Kw (8/2 Poles) | IP55 | 60HZ |

And an industrial and trading company have been set up in Shanghai, known as "Shanghai Teguosi Transmission Equipment Co., Ltd", and shorten as " DHC•TGS", mainly researching and developing high-quality transmission equipment, providing complete sets of equipment for the global intelligent industry in accordance with European standards, National standards and Enterprise standards.
Our products had been Certified by CE,CCC,CQC,XT.
As a leading brand of domestic transmission equipment, it is also a National High-tech Enterprise, a director of the China Heavy Machinery Industry Association, and a Parking Equipment Working Committee and a Bridge Crane Professional Committee.
Your reliable supplier ,we assure you the utmost reliability and security for both product and services.
Our Advantages: Your professional supplier with 20+years experience

Package
Plastic bag + wooden carton
FAQ
1.Q:What kinds of gearbox can you produce for us?
A:Main products of our company: E, D, T, and P series helical gear motor and
hoist drive
heavy-duty helical gearbox
heavy-duty helical bevel gearbox
gear motor for car parking system
sprial bevel gearbox
more than one hundred models and thousands of specifications
2.Q: How long is your delivery time?
A:Generally it is 5-10 days if the parts are in stock. or it is 15-40 days if the parts are not in stock.
3.Q: What is your MOQ?
A:1 Set
4.Q: :Can you make as per custom drawing?
A:Yes, we offer customized service for customers.
If you have any demand for our products please feel free to contact me.