3 core advantages of SGR’s worm gear reducers

In the large family of reducers, the worm gear reducer is like a dark horse. It is not as well-known as the planetary gear reducer, but it is widely used in lifting machinery, conveying systems, food processing, automation equipment and other fields because of its large reduction ratio, compact design, low noise and mechanical self-locking performance.

Worm gear reducers are also one of the main products of Shanghai SGR Heavy Industry Machinery Co.,Ltd. SGR has more than 10 years’ experience to design and produce worm gear reducers. Today in this article, I will describe the core advantages of SGR’s worm gear reducer.

(1) Mechanical parameters and characteristics of SGR‘s worm gear reducer

The characteristics of SGR's worm gear reducer are that the worm and the worm wheel are engaged with each other in a toroidal multi-tooth manner, and an elastic fluid dynamic pressure lubrication film is formed in the process of engagement, which has obvious advantages over the single-tooth engagement of other cylindrical worms.

Under the same center distance, the load-bearing capacity of the toroidal double enveloping worm reducer is increased by 2 to 4 times, the transmission efficiency is increased by more than 30%, and SGR’s worm gear reducer has mechanical self-locking performance under high speed ratio, which can effectively improve the safety performance of the machinery.

The mechanical parameters of SGR’s worm gear reducer are as follows:

Center distance	100~710mm;
Reduction ratio	i≥10;
Maximum output torque	400~160000N.m;
Input method	IEC motor mounting flange, solid shaft input;
Installation method	flange type, foot type, shaft mounted type and torque arm type;
Output shaft design	solid shaft, hollow shaft;

(2) Core advantages of SGR' worm gear reducers

a. Strong load-bearing capacity: There are many teeth meshing at the same time, and most of the teeth on the worm gear tooth surface are in double-line contact, which increases the length of the contact line. The power transmitted by the toroidal worm pair is 2-3 times greater than that of the ordinary cylindrical worm pair with the same center distance.

b. Long service life: Double-line contact reduces the load per unit contact line length. Under the same conditions, the service life of the toroidal worm pair is 5-10 times that of the ordinary cylindrical worm pair.

c. High transmission efficiency: The contact line of the toroidal worm pair is distributed along the direction of the worm gear tooth height, and the angle with the relative motion speed is close to 90 degrees, which makes it easy to form a dynamic pressure oil film. The transmission efficiency of the toroidal worm pair is 5% to 10% higher than that of the ordinary cylindrical worm pair with the same transmission ratio.

(3) Technical advantages of worm gear reducers

Shanghai SGR Heavy Industry Machinery Co.,Ltd. is at the forefront on worm gear reducer technology both in domestic market and abroad. SGR has jointly developed the first domestic toroidal worm precision tester with relevant universities, and has conducted systematic research on the design, process, production, assembly and testing methods of worm gear reducers, hoping to develop and promote this new transmission technology invented by the Chinese.

At present, the entire series of worm gear reducer products developed and produced by SGR adopt a modular design, and the installation dimensions are interchangeable with Flender's CAVEX® Worm-GearUnits Type; SGR can also customize key transmission components of worm gear reducers for customers worldwide.

In general, SGR' worm gear reducers have many advantages such as high torque transmission, smooth operation, compact design, high precision, ultra-quiet design, durability, reliability, mechanical self-locking performance, etc. They are suitable for the needs of various industrial transmission systems and can provide customized solutions to meet customers' specific transmission needs.(Author: SGR, Angie Zhang)

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