Ko te kutikuti ngutu ekara he taputapu tapahi waipēhi mahi taumaha kua tapaina mo tana hoahoa ngutu ekara ahurei. Kei te whakamahia nuitia i roto i nga umanga penei i te tukatuka pepa whakarewa, te hanga, me te whakatikatika motuka. He kaha te kaha o te tapahi, ka taea te huri i te 360 nga nekehanga, kei roto i te hoahoa pivot taumaha, he pakari te hanganga me te whakakakahu, me te pupuri maripi kaha.
Ko nga kutikuti ngutu ka whakapai ake i te hua na roto i te rahi o te kauae me te hoahoa mata motuhake, ka taea te whakakapi tere me te ngawari o te mata, te whakaheke i te wa o te miihini na te rahua, me te arotau i te pai o te whakaputa.
| Tauira | Waeine | RPS180A | RPS280A | RPS380A | RPS480B | |
| He pai mo te tone paerewa | T | 13-18 | 20-28 | 33-42 | 45-52 | |
| Rahi | roa | mm | 2100 | 3100 | 3450 | 3820 |
| Rahi tuwhera | mm | 430 | 585 | 620 | 735 | |
| Te hohonu o te korokoro | mm | 410 | 570 | 580 | 720 | |
| Tawhā | Te kaha kutikuti pakiaka | Tonef | 230 | 450 | 780 | 980 |
| Te kaha kutikuti waenga | Tonef | 120 | 190 | 290 | 400 | |
| Te kaha kutikuti o mua | Tonef | 65 | 90 | 134 | 220 | |
| Te whakatuwhera me te kati te pehanga whakatau | Mpa | 34.5 | 34.5 | 34.5 | 34.5 | |
| Te whakatuwhera me te kati i te rerenga whakatau | L/min | 100-120 | 200-260 | 320-360 | 350-420 | |
| Te pehanga whakatau mo te hurihanga | Mpa | 25 | 25 | 25 | 25 | |
| Rere reanga hurihuri | L/min | 30-40 | 30-60 | 30-60 | 30-60 | |
| Tere hurihuri | rpm | 9-12 | 9-12 | 9-12 | 9-12 | |
| Taumaha | kg | 1600 | 2600 | 3450 | 4450 | |