(1) Type CK-L is a sprag type freewheels, bearing supported.

(2) This paper also introduces sprag overrunning clutch to be applied in transmission system of rotor aero-craft.

(3) A method is discussed for sprag overrunning clutches design, including configuration design, force analysis and FEA. A computer program is developed and applied to the h-tech project.

(4) Description: Type CK-N is sprag type one-way clutch integrate without supporting bearing and oil seal, and is suitable to application at low running speed.

(5) Designed sprag overrunning clutch is key component between output of gas jump-start engine and input of jet engine.

(6) According to the trait of JOY sprag ram in structure and overhaul experiences, we have contrived a testing rig for JOY sprag ram P. O. C. lock to guarantee the overhaul quality of the hy...

(7) Under unfavourable work conditions a dangerous section forms on the inner wing of the joint between sprag and grip, where the stresses are concentrated.

(8) Roller bearing clutch is a new kind of frictional sprag clutch.