... ) Series: 21300 series, 22200 series, 22300 series, 23100 series, 23200series, 24000 series, 24100 series and 2390 Features: 1) Series: 21300 series, 22200 series, 22300 series, 23100 series, 23200series, 24000 series, 24100 series and 23900 series ... outer ring, with three oil holes i) C2/C3/C4: Internal clearance series: C0, C2, C3, and C4 6) Typical applications: mine ...