Twill Rack Gears-Grinding type/Fine milling type

Frequently Asked Questions about This Product

1. What is the side clearance when the gears are meshing?

Side clearance refers to the gap between the two gear tooth surfaces when the gears are meshing, which helps to compensate for gear manufacturing errors and thermal expansion.

2. How to prevent gear wear?

Gear wear can be prevented by selecting appropriate materials and heat treatment processes, and using lubricants to reduce wear.

3. How is the noise of the gear generated and how to reduce it?

Gear noise may be caused by a variety of factors, such as gear manufacturing errors, poor meshing, insufficient lubrication, bearing damage, etc. Gear noise can be reduced by improving gear manufacturing accuracy (selecting 6-grade precision gears with grinding), optimizing gear design, using appropriate lubricants, and strengthening bearing maintenance.

4. What factors should be paid attention to when selecting gear lubricants?

When selecting gear lubricants, factors such as the operating temperature, speed, load, material, and performance of the lubricant should be considered. Generally, grease is used for low speed and oil is used for high speed.

5. What are the precautions for the installation and adjustment of gears and racks?

When installing and adjusting the gears, attention should be paid to the axial and radial positioning of the gears, the adjustment of the meshing clearance, the preload of the bearings, etc., to ensure that the gears run smoothly and reliably. The installation of the rack should give priority to the use of tooth gauge splicing.

6. How to choose the matching direction of the helical gear? What should be paid attention to when selecting?

Helical gears are roughly divided into two types according to different usage methods:

① Helical gears with a helical angle of 45° are mostly matched with staggered axes, so the matching should use the same rotation direction. Because the helical angle is too large, if two gears of the same hardness are selected, it will cause simultaneous wear or faster wear. It is recommended to use different materials.

② Helical gears with a helical angle of 19°31′42″ are mostly matched with parallel axes, so the matching should use the opposite rotation direction. Our standard rack is right-handed, and left-handed helical gears should be used for matching.