Sharaxaad Gaaban:

Ka dib marka si sax ah loo farsameeyo, adkaanta dusha sare ee roller-ka tareenka wuxuu gaaraa HRC 52-58, qoto dheer ee daminta waa 5-8 mm. Si loo hubiyo in dhinaca dibadda ee jirka iyo dhinaca gudaha ee jirka ay yeeshaan iska caabin saameyn waarta iyo iska caabin wanaagsan oo dusha sare ah, nidaamka shaabadda sabbaynaya ee tayada sare leh ayaa la qaataa, si waxqabadka shaabadda uu u noqdo mid aad u wanaagsan, roller-ka tareenkana uu noqdo mid aan dayactir lahayn.