齿轮可按其外形分为圆柱齿轮、锥齿轮、非圆齿轮、齿条、蜗杆蜗轮 ；按齿线形状分为 直齿轮、斜齿轮、人字齿轮、曲线齿轮；按轮齿所在的表面分为外齿轮、内齿轮； 按制造方法可分为铸造齿轮、切制齿轮、轧制齿轮、烧结齿轮等。 Gear the shape into cylindrical gears, bevel gears, of non-circular gears, pinion, worm; straight tooth shape curve of gears, helical gears, Miter Gears, gear; in the tooth's surface into gear, gear; by casting manufacturing methods can be pided into gear, rolling gears, sintered cutting gear, gear, and so on.

齿轮型号：M0.4 M0.5 M0.6 M0.7 M0.75 M0.8 M0.9 M1 M1.25 M1.5 M1.75 M2 M2.25 M2.5 M2.75 M3 M3.5 M4 M4.5 M5 M5.5 M6 M7 M8 M9 M10 M12 M14 M15 M16 M18 M20 M22 M24 M25 M26 M28 M30