The hollow hole creates a dust-suction effect during high-speed rotation.
August 12th, 2026 at 11:10:16 PM
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Hello.
The hollow rotary actuator (OYOSTEPPER) has a straight central hole. During high-speed rotation, a negative pressure is created inside the hole, acting like a vacuum cleaner to suck in fine dust from the surrounding environment from the bottom, accumulating on the internal sensors and code disk.
A dirty code disk causes occasional encoder signal loss and false alarms from the driver. Even with a protective mesh, fine dust can still pass through.
Could a sealing structure with positive pressure air curtains be designed at both ends of the hollow hole, or could a miniature fan be used to blow air into the hole to maintain positive pressure? Once dust gets into the code disk, the positioning becomes erratic; it has already been disassembled and cleaned three times.
Can someone with experience offer some guidance?
The hollow rotary actuator (OYOSTEPPER) has a straight central hole. During high-speed rotation, a negative pressure is created inside the hole, acting like a vacuum cleaner to suck in fine dust from the surrounding environment from the bottom, accumulating on the internal sensors and code disk.
A dirty code disk causes occasional encoder signal loss and false alarms from the driver. Even with a protective mesh, fine dust can still pass through.
Could a sealing structure with positive pressure air curtains be designed at both ends of the hollow hole, or could a miniature fan be used to blow air into the hole to maintain positive pressure? Once dust gets into the code disk, the positioning becomes erratic; it has already been disassembled and cleaned three times.
Can someone with experience offer some guidance?
