Bese, ukusetha ubude besikhwama:
Setha ubude besikhwama bube nguu -350mm ekhasini lepharamitha lephaneli yokusebenza, ukulinganisa ibanga phakathi kombala wpharwu olubili nguu -320mm。Ubude besikhwama kufanele bube bukhudlwana ngo-30mm kunebanga phakathi kwezimpawu zombala ezimbili。