Basic Information
product name:ANSI Standard Steel Spur Gears
Product number:25T DP=3.3''
Product grouping:gear
product properties
use:Industry
Tooth surface hardness: Hardened
Manufacturing method: rolling gear
Tooth shape: Spur Gear
Types of: Circular Gear
Material:Sc45
Transport Packaging:Export Package
specification:DIN, ANSI, GB
trademark:DONGHUA
Teeth No:11-180
Standard spur gear
Gear with straight teeth
Mould from 0.5--16
20CrMnTi, 20Cr, 40Cr
High quality lubrication
Harden teeth 35-55HRC
Standard spur gears are the simplest type of gear. They consist of a cylinder or disk with the teeth projecting radially, and although they are not straight-sided in form, the edge of each tooth is straight and aligned parallel to the axis of rotation. These gears can be meshed together correctly only if they are fitted to parallel shafts.
A spur gear is a cylindrical gear that has parallel and coplanar shafts and straight teeth parallel to the output shaft. Spur gear is the simplest and most common type of gear-easy to manufacture and suitable for a wide range of applications.
The teeth of the spur gear have an involute profile and mesh one tooth at a time. The involute form means that the spur gear generates only radial force (no axial force), and the meshing method of the teeth will cause excessive stress on the teeth and the generation of high noise. Therefore, spur gears are usually only used for low-speed applications,
The profile of an involute gear tooth is a round involute, and when two gears mesh, they touch at a single point where the involute intersects. When the gear rotates, the point moves along the tooth surface, and the line of force (called the line of action) is tangent to the two base circles. Therefore, gears follow the basic laws of gear transmission, indicating that the angular velocity ratio of the gears must remain constant throughout the mesh.
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