Typically, spur or helical gears by Katsa are of the size Ø200-2000 mm and their weight ranges from some tens of kilos to a few tonnes. Our scope of supply includes gearwheels and gear rims also over diameter Ø 2000 mm. The quality class is normally DIN 4-7 and the module sizes vary from 2-25, but we cut even larger teeth on a project basis. Katsa has the capacity to balance high-speed gears to quality class G2,5 according to ISO 1940-1.
Double-helical gears are usually of the size Ø300-1200 mm and weigh up to 4 tonnes. The quality class is typically DIN 4-7. Due to the tooth grinding, the gap must be a minimum of 70 mm, sometimes even more, depending on the number of teeth and the helix angle. Katsa has the capacity to balance fast rotating gears to quality class G2,5 according to ISO 1940-1.
Gear shafts are typically of the size Ø150-600 mm and length 300-1800 mm. At the longest, a case carburized gear shaft may be as long as 2500 mm. Gear shafts may also feature double-helical toothing. The quality class is typically DIN 4-7. Katsa has the capacity to balance fast rotating gear shafts to quality class G2,5 according to ISO 1940-1.
We make bevel gears mainly to serve as components in our own gear units but also for aftermarket service needs. The wheel diameter usually falls within the range of Ø100-700 mm. The teeth are finished by lapping gears in pairs.
Katsa manufactures hardened ring gears up to size Ø1500 mm, and even larger gears of tempered steel. With internal teeth, the maximum gear shaping diameter is Ø1250 mm and the quality class is typically DIN 7-11. Helical and bevel internal toothing are also possible.
Worm gear pairs
Katsa manufactures worm components in sizes Ø60-350 mm. In bronze worm gears, the diameter is often between Ø200-800 mm. A single-thread worm is typically used but other solutions are possible as well.
The typical diameter of slewing bearings ranges between Ø700-1600 mm. The bearing type is either a ball or roller bearing.
Katsa manufactures gear couplings either as single units or in pairs. The coupling size range is extensive, from weights of some tens of kilos to hundreds of kilos.
Other power transmission components manufactured by Katsa include, for example, gear racks, toothed sectors and shafts. Longest shafts are close to 3-metre-long.