Worm Gear
SSTmachinery is one of the most professional worm gear manufacturers in China.
Worm gear mechanism is often used to transfer the motion and power between two staggered shafts. The worm gear and worm are equivalent to gears and racks in their middle plane, and the shape of worm is similar to that of screw.
The worm gear is generally made of tin bronze. The paired worm material is hardened to HRC45~55 with 45 steel, or HRC50~55 with 40Cr, and then ground to Ra0.8 by a worm grinder μm。 Worm gear and worm mechanism are often used in occasions with staggered two shafts, high transmission ratio, low transmission power or intermittent work.
Features of worm gear:
1. A large transmission ratio can be obtained, which is more compact than the staggered helical gear mechanism.
2. The meshing tooth surfaces of two wheels are in line contact, and their bearing capacity is much higher than that of the staggered helical gear mechanism.
3. Worm transmission is equivalent to spiral transmission, which is a multi tooth meshing transmission, so the transmission is stable and the noise is very low.
4. It is self-locking. When the lead angle of the worm is less than the equivalent friction angle between the meshing gear teeth, the mechanism is self-locking and can achieve reverse self-locking, that is, only the worm can drive the worm, but not the worm. For example, the reverse self-locking of the self-locking worm mechanism used in hoisting machinery can play a role in safety protection.
5. The transmission efficiency is low and the wear is serious. When the worm gear and worm are engaged, the relative sliding speed between the meshing gear teeth is large, so the friction loss is large and the efficiency is low. On the other hand, the relative sliding speed makes the tooth surface seriously worn and heated. In order to dissipate heat and reduce wear, more expensive materials with good antifriction and anti-wear properties and good lubrication devices are often used, so the cost is high.
6. The axial force of worm is large.
We can provide customers with high-quality and reasonable products. We can produce worm gears according to DIN, ANSI, ISO and other standards or drawings.
We also provide customers with the most thoughtful service and technical support. Please contact us immediately and get a quick quotation.
