CAT excavator undercarriage part 345/349 track/bottom roller made in china By CQC track
roller shell material:50Mn/45#
surface hardness:HRC48-58
Quench depth:>9mm
Roller shaft material:45#
Surface hardness:HRC48-58
Quench depth:>3mm
Collar material:QT450-10
Weight:83.5kg
Installation size:378mm,130mm
What is track roller?
The function of the track roller is to convey the weight of an excavator to the ground .When an  excavator is run on uneven ground ,track rollers  carry a tremendous impact Therefore ,the support  of track rollers is huge .Moreover u5 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 .
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 TRACK ROLLER  | 
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 KOMATSU  | 
 PC30  | 
 CAT  | 
 E324  | 
 DOOSAN  | 
 DH220-9  | 
 SUNWARD  | 
 SUNWARD50  | 
 806  | 
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 PC40  | 
 
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 E324  | 
 
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 DH300  | 
 
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 SUNWARD60./65  | 
 LIUGONG  | 
 LIUGONG906  | 
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 PC45  | 
 
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 E325/325  | 
 
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 DH360/400  | 
 
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 SUNWARD70  | 
 
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 LIUGONG150  | 
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 PC50uu  | 
 
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 E330  | 
 
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 DH500  | 
 
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 SUNWARD230  | 
 
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 LIUGONG200/925  | 
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 pc55/pc50/PC56  | 
 
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 E345  | 
 HYUNDAY  | 
 R55  | 
 KUBOTA  | 
 KUBOTA35  | 
 
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 LIUGONG936  | 
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 PC60-6  | 
 
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 E350  | 
 
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 R60/R60-5/-7  | 
 
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 KUBOTA60/50/55  | 
 
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 YANMAN55  | 
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 PC60-7  | 
 
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 E375  | 
 
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 R80  | 
 
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 KUBOTA85  | 
 
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 YANMAN75  | 
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 PC60-7  | 
 
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 E385  | 
 
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 R130/R150  | 
 
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 KUBOTA161  | 
 
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 ZY200  | 
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 PC100  | 
 
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 E390  | 
 
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 R200/225-7  | 
 
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 KUBOTA155  | 
 
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 ZY300  | 
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 PC200  | 
 KOBELCO  | 
 SK55  | 
 
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 R275-9  | 
 
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 JCB8056  | 
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 PC300/-5  | 
 
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 SK60-3/5  | 
 
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 R290/R305  | 
 
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 TAKEUCHI150  | 
 
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 JCB220  | 
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 PC400/PC450  | 
 
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 SK60-8  | 
 
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 R370  | 
 
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 TAKEUCHI160/TAKEUCHI60  | 
 
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 60  | 
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 PC650-8  | 
 
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 SK100  | 
 
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 R485  | 
 
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 TAKEUCHI171/175  | 
 
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 65/60  | 
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 PC650-5/750  | 
 
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 SK140  | 
 YUCHAI  | 
 CY35  | 
 CASE  | 
 CASE35  | 
 
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 Ishikawa island50/60  | 
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 PC800  | 
 
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 SK200  | 
 
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 CY60  | 
 
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 CASE55  | 
 
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 210  | 
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 PC1250  | 
 
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 SK230  | 
 
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 CY85  | 
 
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 CASE75  | 
 
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 60  | 
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 HITACHI  | 
 EX55  | 
 
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 SK270  | 
 
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 CY135  | 
 
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 CASE360  | 
 
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 85  | 
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 EX60  | 
 
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 SK330/SK350  | 
 VOLOV  | 
 EC55B  | 
 RAY WALTER  | 
 RAY WALTER60  | 
 
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 Ishikawa island100  | 
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 ZAX70/EX70  | 
 
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 SK450/460  | 
 
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 EC80  | 
 
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 RAY WALTER85  | 
 
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 Ishikawa island50/60  | 
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 EX100  | 
 SUMITOMO  | 
 SH60  | 
 
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 EC140  | 
 
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 RAY WALTER150  | 
 
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 Ishikawa island135  | 
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 EX200-2/-5  | 
 
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 SH120  | 
 
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 EC210  | 
 LIEBHERR  | 
 LIEBHERR914  | 
 
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 60  | 
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 EX300  | 
 
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 SH120A3  | 
 
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 VOL210(NEW)  | 
 
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 LIEBHERR924  | 
 
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 XCMG370  | 
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 ZAX330  | 
 
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 SH200/SH280  | 
 
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 EC290  | 
 
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 LIEBHERR944  | 
 
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 XCMG700  | 
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 EX400/DX380  | 
 
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 SH220  | 
 
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 VOL290(NEW)  | 
 
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 LIEBHERR944SME  | 
 
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 CX800  | 
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 EX550  | 
 
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 SH300SH340  | 
 
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 EC360  | 
 
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 LIEBHERR974  | 
 
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 SWZ216D  | 
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 ZAX650  | 
 
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 SH350  | 
 
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 VOL360(NEW)  | 
 SANY  | 
 SANY65  | 
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 ZAX750  | 
 
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 SH450  | 
 
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 EC460  | 
 
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 SANY215  | 
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 ZAX870  | 
 
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 SH460  | 
 
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 EC700/ex800  | 
 
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 SANY335/365  | 
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 EX1100  | 
 DAEWOO  | 
 DH35  | 
 KATO  | 
 HD250/HD307  | 
 
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 SY405  | 
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 EX1200-6  | 
 
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 DH55/DH60  | 
 
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 HD450  | 
 
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 SY465/485  | 
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 CAT  | 
 E305.5/E55  | 
 
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 DX60  | 
 
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 HD770/HD700  | 
 
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 8360  | 
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 E70B/E307  | 
 
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 DX60-9  | 
 
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 HD1023  | 
 
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 8330  | 
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 E70B  | 
 
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 DH80  | 
 
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 HD1250/1430  | 
 
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 8250/8220  | 
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 E312/E100  | 
 
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 DH130/150  | 
 
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 HD2045  | 
 
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 815  | 
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 E320/E200B  | 
 
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 DH220  | 
SUNWARD | 
 SUNWARD50  | 
 
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 808  | 
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