Ukunemba kokuthwala kuqukethe ukunemba nokunemba kokunemba kobukhulu bokunemba kuyiphrojekthi egibela ku-shaft, ehlanganisa ububanzi bangaphakathi, ububanzi bangaphandle, ububanzi, ukubekezelela usayizi we-chamfer noma inani elivunyelwe.Ukunemba kwejometri kuhlanganisa ukuchezuka kobubanzi, ukuchezuka kobubanzi obumaphakathi, ukuchezuka kobubanzi bohlangothi olungaphandle, ukuchezuka kobubanzi bendandatho emaphakathi ukuchezuka kobubanzi obuyindilinga eyodwa, ukuchezuka kwendiza ejikelezayo ye-ndululu. Indandatho yangaphakathi nendandatho yangaphandle i-radial swing kanye nokugijima kwe-axial, Uhlangothi lwendandatho yangaphakathi kanye nobubanzi obungaphandle kobubanzi bokubekezela. Amazinga 4 no-2 amabanga amane. 

Iringi yangaphandle engu-11, iringi yangaphakathi engu-12, kanye nebhola elingu-13 okuyizinto ezithwalayo zingu-0.95 mass% noma ngaphezulu kanye ne-1.10 mass% noma ngaphansi kwe-carbon, 0.05 mass% noma ngaphezulu nangaphansi kuka-0.3 mass% i-silicon, i-0.10 mass% noma ngaphezulu kanye no-0.50 mass % 11 A indlela yomjaho ngaphandle nangaphakathi indawo equkethe insimbi equkethe i-manganese elandelayo, i-1.30 mass% noma ngaphezulu, kanye ne-2.00 mass% noma ngaphansi, futhi iqukethe insimbi equkethe insimbi esele kanye nokungcola, kanye nokuthintana nezinye izakhi. Futhi isilinganiso sokuhlushwa kwe-nitrogen ezifundeni zongqimba olungaphezulu u-11B, 12B, no-13B okuyizifunda ezingaphakathi kokujula kuka-20 μm ukusuka endaweni eginqikayo yebhola engu-13A angu-0.2% ngobuningi noma ngaphezulu kanye no-0.7% ngobuningi noma ngaphansi, futhi ezifundeni zongqimba olungaphezulu 11B, 12B, 13B, 13B imitha noma ngaphezulu ama-microbides angu-5 akhona noma ngaphansi kwemitha eyi-5. 100 micrometer.