1. Dedicated lub cev muaj zog, tus cwj pwm los ntawm muaj zog tshaj lub peev xwm, loj pib torque, me me lub sij hawm ntawm inertia, luv-lub sij hawm thiab intermittent ua hauj lwm
2. Deceleration mechanism los txo cov zis ceev ntawm lub cev muaj zog
3. Cov txheej txheem tswj kev mob stroke yog siv los kho thiab tswj xyuas qhov qhib thiab kaw ntawm lub valve
4. Torque limiting mechanism, siv los kho lub torque (los yog thrust) thiab ua kom nws tsis pub tshaj tus nqi predetermined
5. Phau ntawv thiab hluav taws xob hloov tshuab, sib cuam tshuam mechanism rau phau ntawv lossis hluav taws xob ua haujlwm
6. Qhov taw qhia qhib yog siv los qhia txoj haujlwm ntawm lub valve thaum lub sijhawm qhib thiab kaw.
