{"product_id":"chiaravalli-cho-73-bevel-helical-gear-unit","title":"Chiaravalli CHO 73 Bevel Helical Gear Unit (Ø30 mm output shaft)","description":"\u003cp\u003eCHO 73 bevel helical gear unit — Chiaravalli's helical hypoid series, made to replace worm gearboxes where efficiency matters (especially at high ratios): high efficiency, low noise, low running temperature, interchangeable with the worm units. Three-stage version with pre-stage (ratios 75:1 to 300:1), aluminium housing painted grey RAL 9022, universal mounting. Standard IEC motor input (B5 or B14 flange) through a coupling — fits standard, brake and explosion-proof motors, and suits inverter drives. Hollow output shaft, Ø30 mm H8 bore (Ø28 mm on request); optional output flanges FA-FE and single \/ double output shafts (see the dimension sheet). Supplied with mineral oil for the B3 mounting position — tell us if you mount it differently, the fill quantity changes; the pre-stage runs in synthetic oil and needs no breather plug. Fits IEC 63, 71, 80, 90 motors — the catalogue lists motors from 0.25 to 0.75 kW for this size.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eSupplied without motor.\u003c\/strong\u003e You are choosing the gear unit only — ask us to quote a suitable motor together with it if you'd like both.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eHow to pick from the table:\u003c\/strong\u003e with a standard 4-pole motor (1400 r\/min), the ratio sets the output speed — e.g. ratio 75:1 gives 19 r\/min at the output shaft. Choose the row whose output speed and torque match your application, then the flange that matches your motor (the frame size and shaft diameter are on the motor's nameplate). The Motor column lists the motors that fit that row — pick yours and the output torque and service factor update to match. Radial load Fr2 is the permissible load on the output shaft at that ratio. More in the Selection Guide tab below.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eTypical use:\u003c\/strong\u003e drives where energy saving matters, and electric motors run from inverters.\u003c\/p\u003e","brand":"Chiaravalli","offers":[{"title":"75:1 \/ IEC 63 (11 mm)","offer_id":46276949934165,"sku":"CHO-73 R.75 63F11","price":0.0,"currency_code":"ZAR","in_stock":true},{"title":"75:1 \/ IEC 71 (14 mm)","offer_id":46276949966933,"sku":"CHO-73 R.75 71F14","price":0.0,"currency_code":"ZAR","in_stock":true},{"title":"75:1 \/ IEC 80 (19 mm)","offer_id":46276949999701,"sku":"CHO-73 R.75 80F19","price":0.0,"currency_code":"ZAR","in_stock":true},{"title":"75:1 \/ IEC 90 (24 mm)","offer_id":46276950032469,"sku":"CHO-73 R.75 90F24","price":0.0,"currency_code":"ZAR","in_stock":true},{"title":"100:1 \/ IEC 63 (11 mm)","offer_id":46276950065237,"sku":"CHO-73 R.100 63F11","price":0.0,"currency_code":"ZAR","in_stock":true},{"title":"100:1 \/ IEC 71 (14 mm)","offer_id":46276950098005,"sku":"CHO-73 R.100 71F14","price":0.0,"currency_code":"ZAR","in_stock":true},{"title":"100:1 \/ IEC 80 (19 mm)","offer_id":46276950130773,"sku":"CHO-73 R.100 80F19","price":0.0,"currency_code":"ZAR","in_stock":true},{"title":"125:1 \/ IEC 63 (11 mm)","offer_id":46276950163541,"sku":"CHO-73 R.125 63F11","price":0.0,"currency_code":"ZAR","in_stock":true},{"title":"125:1 \/ IEC 71 (14 mm)","offer_id":46276950196309,"sku":"CHO-73 R.125 71F14","price":0.0,"currency_code":"ZAR","in_stock":true},{"title":"125:1 \/ IEC 80 (19 mm)","offer_id":46276950229077,"sku":"CHO-73 R.125 80F19","price":0.0,"currency_code":"ZAR","in_stock":true},{"title":"150:1 \/ IEC 63 (11 mm)","offer_id":46276950261845,"sku":"CHO-73 R.150 63F11","price":0.0,"currency_code":"ZAR","in_stock":true},{"title":"150:1 \/ IEC 71 (14 mm)","offer_id":46276950294613,"sku":"CHO-73 R.150 71F14","price":0.0,"currency_code":"ZAR","in_stock":true},{"title":"150:1 \/ IEC 80 (19 mm)","offer_id":46276950327381,"sku":"CHO-73 R.150 80F19","price":0.0,"currency_code":"ZAR","in_stock":true},{"title":"200:1 \/ IEC 63 (11 mm)","offer_id":46276950360149,"sku":"CHO-73 R.200 63F11","price":0.0,"currency_code":"ZAR","in_stock":true},{"title":"200:1 \/ IEC 71 (14 mm)","offer_id":46276950392917,"sku":"CHO-73 R.200 71F14","price":0.0,"currency_code":"ZAR","in_stock":true},{"title":"250:1 \/ IEC 63 (11 mm)","offer_id":46276950425685,"sku":"CHO-73 R.250 63F11","price":0.0,"currency_code":"ZAR","in_stock":true},{"title":"250:1 \/ IEC 71 (14 mm)","offer_id":46276950458453,"sku":"CHO-73 R.250 71F14","price":0.0,"currency_code":"ZAR","in_stock":true},{"title":"300:1 \/ IEC 63 (11 mm)","offer_id":46276950491221,"sku":"CHO-73 R.300 63F11","price":0.0,"currency_code":"ZAR","in_stock":true},{"title":"300:1 \/ IEC 71 (14 mm)","offer_id":46276950523989,"sku":"CHO-73 R.300 71F14","price":0.0,"currency_code":"ZAR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0557\/1595\/4773\/files\/cho-photo_c8599e9e-2db2-464f-ac21-eb7c569df031.jpg?v=1791184281","url":"https:\/\/nusaf.co.za\/products\/chiaravalli-cho-73-bevel-helical-gear-unit","provider":"Nusaf Dynamic Technologies","version":"1.0","type":"link"}