Inquiry (采购产品): non-backdriveable worm gear reducer Aloha, I’m searching for a 300:1 or 400:1 right angle shaft non-backdriveable worm gear reducer. Multiple stages are fine! Please refer to detailed specifications are at the bottom of this e-mail. According to my worm gear documentation, a worm gear reducer becomes non-backdriveable (self-locking) when one of the stage’s worm lead angles is less than 8.25 deg. To calculate this figure I used the static coefficient of friction of 0.145 for a Phos. Bronze wheel and hardened steel worm combination and the following equation. Non-backdriving condition to be satisfied: Worm lead angle < arctan (coeff. Of friction) Three main points: -Gear reducer will be INDOORS and will NOT be exposed to any vibrations, high loads, shocks, rainy weather, or high temperatures. - Gear reducer will NOT be used on a safety system. - Gear reducer usage will be <10min/hr. Please refer to following specifications at the end of this e-mail for more details. Can you please notify me of any worm gear reducers that you offer that meets my specs or comes close to meeting my specs? Please feel free to e-mail me if you have any questions! Mahalo Nui Loa, Windell Jones University of Hawaii High Energy Physics Department. WORM GEAR REDUCER SPECIFICATIONS: -300:1 to 400:1 reduction. (Multiple reduction is fine) -at least one worm lead angle < 8.25 deg. -WILL NOT BE USED ON A SAFETY SYSTEM. OUTPUT TORQUE CAPACITY: approx. 400 in-lbs (due to my safety margin the output torque capacity can be a little less than this value) SHAFT CONFIGURATION: right angle shafts WEIGHT: lightweight as possible. APPROX. INPUT SHAFT SPEED: 120RPM OUTPUT SHAFT SPEED: -0.4RPM (w/300:1 ratio) -0.3RPM (w/400:1 ratio) GEARBOX USAGE: less than 10min/hr. ENVIRONMENTAL CONDITIONS: Gear reducer will be INDOORS and will NOT be exposed to any vibrations, high loads, shocks, rainy weather, or high temperatures. **** Hidden Message ***** Windell Jones HI 96822 USA Company: University of Hawaii High Energy Physics Department E-mail: windell@hawaii.edu **** Hidden Message ***** windell@hawaii.edu
