Posted to News on 23rd Apr 2015, 00:00
Hypoid gearboxes for servo motors
The SK range from Vogel are right-angle gearboxes suited to use with servo motors. Whilst in-line servo geared motors will generally use planetary gearing, the SK uses a ground hypoid gearset to give similar levels of performance but with a 90º output. Hypoid gears deliver high efficiency at 94 to 95%, and offer other features to suit servo motors such as low inertia, low backlash and high input speeds.
>Hypoid gears resemble bevel gears except that the shaft axes do not intersect. They look like a cross between worm and a bevel gearset. Tooth contact is progressive and smoother than spiral bevel gears with a large contact area leading to lower noise levels and a long service life.
>The Vogel SK has a pair of hypoid gears fully supported on the input and output shafts giving a range of ratios from 3 to 10. Rated output torques in three sizes run from 40 to 150Nm with a standard backlash of 4 to 5 arcmins measured at the input shaft. On request this can be reduced to 2 to 3 arcmins by gear matching. Maximum input speed is 7500 rev/min on an intermittent basis and noise levels are little lower than planetary gearboxes.
>SK gearboxes can be supplied with inputs to match common servo motor frame sizes.
