Description: The track roller is composed of shell,collar,shaft,seal,O-ring,bushing bronze,plug,lock pin,single flange track roller and double flange track roller is applicable to special model of crawler type excavators and bulldozers from 0.8T to 100T.it is widely applied in bulldozers and excavator of CATERPILLAR、KOMATSU、HITACHI、KOBELCO、YANMAR、KUBOTA、HYUNDAI etc;the design of double-cone sealing and lubrications for life makes the track roller long life and perfect performance under any working condition;hot forging roller shell gains distinguishing inner material fiber flow distribution architecture;differential-type hardening and through-type hardening assure the depth under heat treating and the crack controlling. The function of the track roller is to convey the weight of excavator to the ground. When excavator is run on uneven ground,track rollers carry a tremendous impact. Therefore,the support of track rollers is huge.Moreover,if it is of poor quality and is often dusty,it needs a very good sealing to prevent dirt,sand,and water from damaging it. Our products are according to the standard of OEM to manufacture.   Factory catalogue KOMATSU PC05/PC07、PC12R/PC15R、PC10-7、PC20/30、PC20R-8、PC30MR-1、PC40/45、PC40MR、PC50MR-2、PC56、PC60-5、PC60-6、PC60-7（Bilateral）、PC75-3、PC75UU/PC78、PC60-6（Rubber Tracks）、PC100-/3/5 、PC120-3、PC200-5、PC200-3、PC200-7、PC220/240-7(Large）、PC300-3、PC300-5、PC300-6、PC300-7、PC300-8、PC400-3/5、PC400-6、PC400-7、PC650-5、PC1000-1 CATERPILLAR E18、CAT301.5、CAT302CCR、CAT302.5、E303、E303CCR、E304MR、CAT305、E306E、E70B、E120B/E110/E120、 E312、E200B、E320、E323、E324、E240、E300B、E300、CAT322、CAT325、CAT330、E336D、E345、E450 HITACHI EX08、EX12/15、EX30、EX30-2、EX55/ZX55/ZAX60、EX40-1、EX40-2、EX50、EX60-1、EX60-2/3、EX60-5、EX70/75、EX90-1、EX100M-1/EX150-1、EX100-1、EX100-2/5、EX200-1、EX200-2、EX200-5、EX220-/1、EX270-1/EX300-1、EX300-5/EX350、EX400-1、EX400-3/5、ZX17、ZX30U-2、ZX38U、ZX40U-1、ZX40U-2、ZAX50、ZX60、ZAX135、ZX200-3、ZAX200-5G、ZX240、ZX330、ZAX330-3、ZX470、AX30 KOBELCO SK15、SK020SR、SK024/SK025、SK25SR、SK027、SK030、SK30SR、SK35SR、SK40、SK045、SK045SR、SK042-1、SK042-2、SK50、SK50SR、SK060/SK75、SK100/120、SK120-W、SK07-1、SK07-2、SK07N2、SK09N2、SK300、SK300-5、SK200-/3/5、SK045(10tons）、SK200-6、SK200-8、SK220-3、SK220-5、SK230、SK260/SK250-8、SK310、SK320、SK330/SK350、SK380、SK400-3/SK450/SK460 KUBOTA U008、U10-3、U15-3、U17-2、KX101、KX41-3、KX20、KX25、KH025、KX135、KH030、K035、K030、K040、K045、U30-2、KH040、K04、U40-3、U50、KX161、KX163、KX91-3、U85 YANMAR VIO15、VIO16、VIO17、VIO18、VIO20、VIO27、VIO30、Y30B、VIO35、B37-2、VIO40、H45、VIO50、VIO50-6B、VIO55、B65、VIO75、B70-2、VIO100、C30R、C50R DAEWOO DH35、DH55、DX55-9、DH60、DX60、DX60-9、DH80、DX80、DH150、DH180/200、DH220、DH258、DX225、DX260、DH300、DH370、DH420、DX300、DX380、DX500、DH500 KATO HD140、HD250、HD308、HD400-1、HD400-2、HD770、HD450、HD550、HD700/770、HD820、HD1250、HD1250-7、HD1430、HD1880、HD2045、HE280 YUCHAI YC13、YC18、YC35、YC60、YC85、YC135 KUBOTA U008、U10-3、U15-3、U17-2、KX101、KX41-3、KX20、KX25、KH025、KX135、KH030、K035、K030、K040、K045、U30-2、KH040、K04、U40-3、U50、KX161、KX163、KX91-3、U85 BOBCAT BOBCAT322、BOBCAT331、BOBCAT337、BOBCAT430、BOBCAT442、E26、E35、E50、T190、T250 MITSUBISHI MS30、MM30、MM40、MM45、MS110、MS180、MS230 VOLVO EC25、EC35、EC55、EC80、EC140、EC210、EC220、EC240、EC250D、EC290B、EC300、EC350、EC360、EC460、EC480 IHISCE IHI10、IHI15J、IHI30、IS35、IHI40、IHI45J、IHI50J、IHI100、IHI135 HYUNDAI R35、R55、R60-5、R60-7、R80、R130、R150、R200、R210、R225-7、R220-9、R265-9、R275-9、R305、R385、R455、R290LC-7、R360LC-7、R450 SUMITOMO SH30、SH55、SH65、SH60、SH75、SH80、SH100、SH120、SH120-A3、SH200、SH220、SH260、SH265、SH280、SH300、SH340、SH350、SH350-6、SH380、SH430、SH460、SH480、SH580、LS2600FJ2、LS2800FJ2、LS3400FJ2、LS5800FJ2 TAKEUCHI TB016、TB125、TB135、TB150、TB160、TB175、TB1135 YUCHAI YC13、YC35、YC60、YC85、YC135 SANY SY16、SY35、SY55、SY65、SY75、SY115、SY215、SY235、SY305、SY335、SY285、SY365、SY385、SY395、SY465