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A rack is a special gear with teeth distributed on a bar-shaped body. The racks are also divided into spur racks and helical racks, which are paired with spur gears and helical gears respectively; the tooth profile of the rack is a straight line rather than an involute , It is equivalent to an infinite cylindrical gear with the index circle radius.
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More than 20 years experience
Total factory is 50,000 square meters
Main Features Of Rack
Tooth profile angle
Since the rack tooth profile is a straight line, each point on the tooth profile has the same pressure angle and is equal to the inclination angle of the tooth profile. This angle is called the tooth profile angle, and the standard value is 20°.
Same pitch and modulus
The straight line that is parallel to the tooth top line and whose tooth thickness is equal to the width of the tooth slot is called the index line (midline), which is the reference line for calculating the rack size.
Any straight line parallel to the tooth top line has the same pitch and modulus.
Ever-Power Group is an expert in manufacturing various mechanical transmissions and hydraulic transmissions, such as planetary gear boxes, peristaltic reducers, in-line helical gear reducers, parallel shaft helical gear reducers, helical gear boxes, gear gears, helical gears , Helical gear box, PTO drive shaft, special reducer and related gear components and other related products, sprocket, hydraulic system, vacuum pump, fluid coupling, gear frame, chain, timing pulley, UDL speed variable, V pulley Air compressors, journal low-backlash worm reducers, etc. In addition, we can produce customized gearboxes, gear motors, electric motors and other hydraulic products according to customers’ drawings.
Due to our excellent product quality and after-sales service, we have exported our products to customers all over the world and won a good reputation. We warmly welcome domestic and foreign customers to contact us to discuss business, exchange information and cooperate with us.
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We have more than 1,500 workers, and have CNC lathes and CNC machining centers.
We are one of the best manufacturers and suppliers in China, choose quality manufacturers, suppliers, exporters in rack-pinions.com
More than 20 years experience
Including around 50 R&D Personnel
The Main Parameters
The main parameters of the rack are: tooth space width, tooth tip height, tooth root height, tooth height, tooth thickness, tooth root radius and so on.
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Gear refers to a mechanical element with gears on the rim that continuously meshes to transmit movement and power. The application of gears in transmission appeared very early. At the end of the 19th century, the principle of the generative gear cutting method and the special machine tools and tools that used this principle to cut gears appeared one after another. With the development of production, the smoothness of gear operation was paid attention to.
Rack Parameter Selection
Is it out of tolerance
Whether the gear runout, full tooth depth, common normal line, and tooth direction are qualified, whether the tooth swing difference and the pitch error are out of tolerance. More Details