MrClean
Mechanical
- Feb 15, 2006
- 6
I'm working with a small (64 DP) 5-stage gear train. Overall ratio is 591:1. Design load is 3.8 watts @ 6,000 rpm motor speed. Design life is 500 hours at this load, though it will normally be used at much lower loads. Motor pinion is 13 teeth, x = 0.6, Rc 58. Gear for this stage is 69 teeth, HB 210. Pitch line velocity for high-speed stage is 326 fpm. Even though the gear is soft, gearset still has a service factor of 10 per AGMA ratings. Gearbox will be hand held and used at all attitudes. The unit will be manufactured and sold in small to medium quantities (up to 200 units per year).
I'm concerned about lubrication for the 2 highest speed stages. I'd like to lube the gears "for life" at assembly with some kind of grease. Oil is not practical because there are internal feedback electronics that are not sealed well enough.
I'd appreciate any suggestions on a suitable grease.
I'm concerned about lubrication for the 2 highest speed stages. I'd like to lube the gears "for life" at assembly with some kind of grease. Oil is not practical because there are internal feedback electronics that are not sealed well enough.
I'd appreciate any suggestions on a suitable grease.