Premium Compact Excavator R55-7 322 322G Track Roller Bottom Roller Lower Roller Undercarriage Mini Excavator Parts. Discover the synergy of our Upper and Bottom Rollers, crafted to elevate your machinery's durability and performance to new heights.
| Material |
50mn, 40mn2 |
| Finish |
Smooth |
| Colors |
Black, yellow, or customized |
| Technology |
Forging/Casting |
| Surface Hardness |
HRC55-60, deepth: 8mm-12mm |
| Warranty time |
12 Months |
| Delivery Time |
25-30 days |
Step into a world where bulldozer undercarriage spare parts transcend the ordinary, offering you meticulously engineered components that redefine the zenith of machine performance. Immerse yourself in our realm of precision and craftsmanship, where excellence is not just a promise but a guarantee to sustain unmatched efficiency and reliability in every operation.
Please note that all mentioned manufacturer names and symbols are solely for reference purposes. No affiliation or endorsement by these manufacturers is implied or intended.
| HITACHI |
| EX08 |
EX12/EX15 |
EX20/EX22 |
EX25/EX30 |
KH300 |
| EX40-1 |
EX40-2 |
EX45 |
EX50 |
EX50URG |
| EX55 |
EX60-1 |
EX60-2/3 |
EX60-5 |
EX70 |
| AX40U-2 |
AX40U-3 |
AX40U-4 |
UH025-7 |
UX30 |
| ZX16-3 |
ZX17/ZX17U-2 |
ZX18 |
ZX22U-2 |
ZX23 |
| ZX25 |
ZX30U |
ZX33 |
ZX40ZX48ZX50 |
ZX85USB LC-3 |
| ZAXIS110 |
ZAXIS120 |
ZAXIS135 |
ZAXIS15/16/18/25/30 |
ZAXIS35/35U2/40U2 |
| ZAXIS80 |
EX100 |
EX120 |
EX130 |
EX135 |
| EX150 |
EX160 |
EX200 |
EX210 |
EX220 |
| EX267 |
EX270 |
EX285 |
UH10/12 |
UH101 |
| UH121/122/123 |
UH14-2 |
UH143 |
UH171/172 |
UH181 |
| UH20 |
UH35 |
UH501 |
ZX110 |
ZX120 |
| EX300 |
EX355 |
EX400 |
EX450/EX455 |
EX550 |
| EX600 |
EX700 |
EX800 |
EX1100 |
EX1200 |
| UE30/35 |
UE40/45 |
UE50 |
UH035 |
UH03M |
| UH04-1/2/3 |
UH041/042/043 |
UH045-5/7 |
UH04M |
UH051/052M/053 |
| UH06-5 |
UH061/062/063 |
UH07-3/5/7 |
UH081/082/083 |
UH09-7 |
| ZX370 |
ZX370GI |
ZX400 |
ZX450 |
ZX460 |
| ZX470 |
ZX500 |
ZX600 |
ZX650 |
ZX670 |
| ZX800 |
ZX130 |
ZX135 |
ZX160 |
ZX180 |
| ZX200 |
ZX210 |
ZX225 |
ZX240 |
ZX250 |
| ZX270 |
ZX330 |
ZX350 |
ZX850 |
ZX870 |
| KH 100 |
KH 125 |
KH 150 |
KH 180 |
KH 230 |
| KOBELCO |
| ED150 |
ED150 1E |
ED150 2 |
ED180 |
ED190-8 |
| ED190LC |
ED190LC-6E |
K903 MARKII |
K903A |
K903B |
| K903C |
K904 MARK II |
K904BL |
K904C |
K904CL |
| K904D |
K904DLC |
K904E |
K905A |
K905ALC |
| K905LC |
K905LC MARK II |
K907 MARK II |
K907A |
K907CLC |
| K907D |
K907DLC |
K907LC |
K909 MARK II |
K909A |
| K909ALC |
K909LC MARK II |
K910 |
K912 |
K912LC MARK II |
| K914 |
K916 |
K916LC |
K935 |
K935A |
| SK135SRLC |
SK150LCMARK III |
SK60LC MARK III |
SK170LC |
SK200 MARK III |
| SK200LC VI |
SK210 MARK IV |
SK210-8 |
SK210-9 |
SK210LC |
| SK210LCMARK III |
SK210LCMARKIV |
SK210LC-6E |
SK210LC-8 |
SK220HDMARKIV |
| SK220LCMARKIII |
SK235SR |
SK250MARK8 |
SK250HDMARKVI |
SK250HDLCMARKVI |
| SK250HDNLCMARK |
SK250LC6E |
SK250NLCMARKVI |
SK260MARK8 |
SK270 |
| SK270LC |
SK300MARKIII |
SK300LCMARKII |
SK300LCMARKIII |
SK330 |
| SK330 8 |
SK330 MARK VI |
SK330LC MARK IV |
SK350LC 8 |
SK350LC 9 |
| SK400LC |
SK450 |
SK450LC |
SK480LC |
SK60 MARK III |
| SK600 |
SK75UR-1 |
SK75UR-2 |
|
|
| for KOMATSU |
| PC05/PC07 |
PC10-7 |
PC12/15R |
PC18MR |
PC20-3 |
| PC20-7 |
PC30-2 |
PC30-6 |
PC35 |
PC20/30 |
| PC20R-8 |
PC25 |
PC27 |
PC27 |
PC30MR-1 |
| PC35 |
PC38UU |
PC40 |
PC40-5 |
PC40-6 |
| PC40-7 |
PC45 |
PC40MR-2 |
PC50MR-2 |
PC50 |
| PC56-7 |
PC60-5 |
PC60-7 |
PC75UU-2/3 |
PC78 |
| PC80 |
PC90 |
PC95 |
D20/D21 |
D30/D31/D32 |
| D37E-5 |
D37EX-22 |
D38P |
D39 |
D40/D41 |
| D45 |
D50/D51 |
D53/D55 |
D58 |
D60/D61 |
| D65/D66 |
D68 |
D75 |
D80/D83 |
D85/D85ESS |
| D95 |
D125/D155 |
D275/D375 |
D475 |
PC80 |
| PC100 |
PC120 |
PC130 |
PC150 |
PC180 |
| PC200 |
PC210 |
PC220 |
PC228 |
PC230 |
| PC240 |
PC250 |
PC280 |
PC290 |
PC300 |
| PC340 |
PC350 |
PC360 |
PC380 |
PC400 |
| PC450 |
PC600 |
PC650 |
PC710 |
PC750 |
| PC800 |
PC1250 |
|
|
|
| CASE |
| 1150 |
1150B |
1150C |
1150D |
1150LGP |
| 1150E LGP |
1150E LT |
1150G LGP |
1150G LT |
1155E |
| 1450 |
1450B |
1450B LGP |
1550 |
1550 LGP |
| 1550 LT |
1650K LGP |
1650K XLT |
1650L LGP |
1650L WT |
| 1650L XLT |
1850K LGP |
1850K LT |
1850K XTL |
|
| 310 |
310C |
310D |
310E |
310F |
| 310G |
320 |
350 |
350B |
420 |
| 420B |
420C |
450 |
450A |
450B |
| 450B LGP |
450C |
450C LGP |
475 |
550 LGP |
| 550LT |
550E LGP |
550E LT |
550G LGP |
550G LT |
| 650 |
650G |
750 |
800 |
800B |
| 800C |
850 |
850B |
850C |
850C LGP |
| 850D LGP |
850D LT |
850E LGP |
850E LT |
850G LGP |
| 850G LT |
855E |
|
|
|
| 1080 |
1080B |
1187 |
1187B |
1280 |
| 880BLC |
880C |
880CLC |
880D |
9010 |
| 9010B |
9013 |
9020 |
9020B |
9030 |
| 9030B |
9040 |
9045B |
9050 |
9050TK |
| 9060 |
980 |
980B |
|
|
| CX130 |
CX130B |
CX130B LC |
CX135SR |
CX160 |
| CX160B |
CX160X |
CX180 |
CX210 |
CX210B |
| CX210B LR |
CX210B NLC |
CX225 |
CX225 SR |
CX230 |
| CX240 |
CX240 LR |
CX240B LR |
CX250 |
CX250C |
| CX290 |
CX290B |
CX300 |
CX300C |
CX330 |
| CX350 |
CX350B |
CX460 |
CX470B |
CX190D LC |
| CX700 |
CX700B |
CX75 SR |
CX80 SR |
CX800 |
| CX800B |
8015 |
8017 |
|
|
| CK08 |
CK13 |
CK15 |
CK16 |
CK25 |
| CK28 |
CK31 |
CK32 |
CK35 |
CK36 |
| CK38 |
CK50 |
CK52 |
CX14 |
CX15 STR |
| CX16 |
CX17B |
CX18B |
CX20B |
CX22B |
| CX23 |
CX26B |
CX31 |
CX31B |
CX31BMC |
| CX35 |
CX36 |
CX36B |
CX40B |
CX47 |
| CX50 |
CX75SR |
CX80 |
LX92 |
|
| 7700 |
8000 |
8800 |
|
|
| 420T |
440T |
445T |
450CT |
TR270 |
| KUBOTA |
| K020 |
022 |
025 |
028 |
030 |
| 035 |
040 |
045 |
151 |
|
| KH02 |
021 |
021HG |
024 |
026 |
| 026G |
KH026HG |
KH030G |
033HG |
KH055 |
| KH91 |
KH51 |
KX02 |
KX021 |
KX026 |
| KX030 |
KX045 |
KX101-3 |
KX121-3 |
KX161-2 |
| KX60 |
75UR |
R30P |
RX201 |
RX301UR |
| RX501 |
U30 |
U30.1 |
U30.2 |
U30HG |
| U50.3 |
U60 |
U80 |
H30 |
UX30 |
Nestled in the vibrant cityscape of Quanzhou, China, emerges Quanzhou Zhongkai Machinery Co., Ltd., a trailblazer in undercarriage components since 2013. Our diverse and expansive portfolio boasts track rollers, chains, idlers, top rollers, and sprocket/segment rims, meticulously servicing a spectrum of machinery including excavators, bulldozers, agricultural tractors, skid steers, and crawler loaders. Trusted by leading global brands, we are the premier choice for top-tier products, adeptly catering to machines ranging from nimble mini-excavators to colossal mining giants.
Why Choose Us? Dive into an unparalleled journey of excellence and unwavering trust.
1. Our unwavering commitment to quality assurance is second to none. Whether you're purchasing a single unit, sampling, or engaging in bulk procurement, our boundless flexibility ensures that every demand is met with precision and excellence.
2. As industry specialists, we present a comprehensive suite of solutions tailored for excavators and bulldozers, delivering products meticulously crafted to align with your machinery's distinct needs.
3. Trust in our unwavering promise of superior quality, fortified by a robust warranty that injects confidence into every purchase you make.
4. Experience our exceptional customer service, where expert guidance accompanies you through every step of your purchasing journey, ensuring a seamless and satisfying experience.
5. Leverage our strategically competitive pricing, meticulously designed to provide you with maximum value and a compelling return on your investment.
6. With an extensive inventory at your fingertips, we are poised to meet your urgent and substantial demands with unparalleled efficiency and promptness, ensuring your operations never miss a beat.
FAQ
How could I ensure the part would fit my machinery?
Pls send us the correct model number/machine serial number/ any numbers on the parts itself. Or measure the parts give us dimension or drawing.
What is the payment term?
Generally, 30% deposit T/T in advance, and the balance before the shipment.
What is the lead time?
FOB Xiamen or any Chinese port: 25-30 days. If there are any parts in stock, our delivery time is only 0-7 days.
What kind of package do you offer?
Normally we use the export standard wood pallets. If any special requirements, we can discuss them.
What about Quality Control?
We have a perfect system for checking the quality of our products. Our team checks the products and the way they are made very carefully. They do this at every stage of the production process. This makes sure that the products are safe when they are put in the container.
Audited Supplier 
){kind=link}