Katsa`s gear component manufacturing is focused for high-accuracy gearwheels and other gear components for heavy demands.
Typically, spur or helical gears by Katsa are of the size Ø 200-2000 mm (10-80”) and their weight ranges from some tens of kilograms to a few tonnes (up to 9000 lbs). Our scope of supply includes gearwheels and gear rims also over ⌀ 2000 mm (80”). The quality class is normally DIN 4-7 (AGMA 10-7) and the module sizes vary from 2-25 mm also dp gear cutters, 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 21940-1.
Double-helical gears are usually of the size Ø 300-1200 mm (10-50”) and weigh up to 4 tonnes (9000 lbs). The quality class is typically DIN 4-7 (AGMA 10-7). Due to the tooth grinding, the gap must be a minimum of 70 mm (3”), 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 21940-1.
Gear shafts are typically of the size Ø 150-600 mm (6-24”) and length 300-1800 mm (12-70”). At the longest, a case carburized gear shaft may be as long as 2500 mm (100”). Gear shafts may also feature double-helical toothing. The quality class is typically DIN 4-7 (AGMA 10-7). Katsa has the capacity to balance fast rotating gear shafts to quality class G2,5 according to ISO 21940-1.
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 Ø 100-700 mm (4-28”). The teeth are finished by lapping gears in pairs.
Katsa manufactures hardened ring gears up to size Ø 1500 mm (60”), and even larger gears of tempered steel. With internal teeth, the maximum gear shaping diameter is Ø 1250 mm (50”) and the quality class is typically DIN 7-11 (AGMA 10-7). Helical and bevel internal toothing are also possible.
Katsa manufactures worm components in sizes Ø 60-350 mm (2-14”). In bronze worm gears, the diameter is often between Ø 200-1300 mm (8-52”). A single-thread worm is typically used but other solutions are possible as well.
The typical diameter of slewing bearings ranges between Ø 700-1600 mm (28-63”). 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 (10 ft.).
“Reliable, flexible and easy to approach” Project manager Raimo Brand and Sales Manager Mikko Takaniemi from Metso both describes Katsa with one mouth. Co-operation between Metso and Katsa Oy dates to the 80’s when Metso first sought a reliable and protean partner for theirchanging needs in order to develop power transmissions in their machines.
In almost half a century ADS van STIGT has grown into a strong Sales and Service organization which has developed from representative of foreign manufacturing companies to an independent importer, distributor and maintenance expert.
”The absolute vantage of Katsa is the domestic existence. Maintenance is done here in Finland, and we can do business with a domestic partner. That is very relevant to us,” says Reliability Engineer Mika Näätsaari from Outokumpu´s Tornio stainless steel plant.
