... production experience. Rubber Ribbed BeltTypes:1) PH: pitch 1.6, belt thickness 3, wedge angle 402) PJ: pitch 2.34 ... , belt thickness 4, wedge angle 403) PK: pitch 3.56, belt thickness 6, wedge angle 404) PL ... 9.4, belt thickness 17, wedge angle 40Advantages:Transmission power 30% higher than common v-belts, occupy smaller space, slight vibration, low ...