Standard Requirements: MT/T - 929, DIN22255 Number: 26*92 - D MCB220264 30*108-D MCB220257 34*126-D MCB220248 38*137-D MCB220262 42*146-D MCB220269 48*152-D MCB220267 Scope of Application: Coal Mining Coal Machine, Scraper Transport Plane, Scraper Loading Machine, Excavator, Coal Striking Machine, etc. d. Main characteristics: the outer width of the vertical ring is reduced, the distance between the chain and the gate is increased, thereby reducing the appearance of martensite friction effect, reducing the working losses of the chain.