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Uhlu Lokuphakathi 1. Isingeniso: Ukuqonda Ukubaluleka Kwama-Roller Bearings. abafanele bacabangele lapho bekhetha i-Roller Bearings ephelele 3.1 Amandla okulayisha kanye Nokungapheli 3.2 Ijubane Nomkhawulo 3.3 Izidingo ze-Lubrication 3.4 Ukubeka nokufakwa Ukucabangela 3.5 Ukusebenza kwezindleko kanye neLon