a) Xa ususa isikrufu, akukho mfuneko yokususa okanye yokuqhaqha isixhobo sokuqhuba;

b) Xa ususa i-intermediate bearing, akukho mfuneko yokususa okanye ukususa isikrufu;

c) I-bearing ephakathi ingatyiswa ngaphandle kokuqhaqha umgqomo kunye nesigqubuthelo.