-
-
ApplicationOur products consist of undercarriage parts for bulldozer and excavator such as Track link,Track roller,Carrier roller,Sprocket,ldler,Track shoe,Cutting edge,End bit,Tooth Bucket,Track pin,Track bush, Engine parts,Track boit&nuts.U-bolt,Centre bolt,Wheel bolt and other related parts.
-
About UsFujian Yongsheng Machinery Parts Co., Ltd. is located in Quanzhou City, Fujian Province, which is one of the most developed regions of China Machinery Manufacturing.The company was established in 2003, after approximately 10years' effort, and now it is one of the leading construction machinery parts auto parts manufacturers in CHINA.
-
BlogSuppliers who pass Quality ManagementSystem Certification, and have onsitematerials or finished products inspected,as certified by independent third parties.
NEWS
Leading chinese undercarriage pars & Machinery part supplier
Sep 08,2026
Dozer Track Roller Frame Inspection: Cracks, Leaks and Wear Clues
The track roller frame supports and locates important undercarriage components while working close to impact, abrasive debris and heavy side loads. A crack, damaged guard mount, restricted idler movement or changing contact pattern can affect more than the frame itself. Careful cleaning and comparison help separate a structural warning from normal welds, surface marks and leaks that originate nearby.
Sep 08,2026
Sealed, Grease-Lubricated and Dry Track Chains: What Is the Difference?
Track-chain descriptions can sound similar while referring to different pin-and-bushing joint designs. A dry chain, a sealed dry chain, a grease-lubricated excavator chain and an oil-lubricated dozer chain should not be selected from one marketing label. The machine specification, joint construction, sprocket interface, dimensions and working conditions must agree.
Sep 07,2026
Cat D6 Dozer Undercarriage Maintenance and Parts Guide
The undercarriage converts a D6 dozer's power into traction while carrying repeated impact, abrasion and side load. Cleaning, consistent inspection, correct track adjustment and application-aware operation can make wear easier to predict. They also provide the evidence needed to plan rollers, idlers, sprocket segments, track chains, shoes and related repairs as one system.
Sep 07,2026
Komatsu PC210LC-11 Undercarriage Inspection and Parts Guide
A productive PC210LC-11 depends on more than engine and hydraulic performance. Its track chains, rollers, carrier rollers, front idlers, sprockets and shoes work as one wear system. A repeatable inspection routine helps a fleet detect developing problems, compare left-to-right wear and collect the information needed for a reliable parts inquiry.
Sep 04,2026
Dozer Track Shoe Bending and Cracking: Causes, Inspection and Replacement
A bent or cracked dozer track shoe is evidence that the plate has experienced more stress than its current condition could carry. The trigger may be a rock impact, unsuitable shoe width, advanced plate or grouser wear, loose hardware, incorrect application or repeated side loading. Inspecting the crack location and the surrounding undercarriage is more useful than blaming material quality from appearance alone.
Sep 04,2026
Excavator Track Chain and Sprocket Pitch Mismatch: Inspection and Repair Planning
An excavator track chain and drive sprocket wear together every time a sprocket tooth pushes against a chain bushing. As pins and bushings wear, effective chain pitch can increase. Sprocket tooth contact also changes. Installing a fresh component against a heavily worn mating component may create concentrated contact, rapid polishing, noise or poor engagement. The decision should come from measurements and wear patterns, not appearance alone.
Sep 03,2026
Dozer Track Shoe Bolts Keep Coming Loose: Causes and Checks
A loose dozer track shoe bolt is not just a fastener problem. The bolt, nut, shoe and track link must act as one clamped joint. Dirt or paint between mating faces, damaged threads, reused hardware, worn bolt holes, a distorted shoe or movement at the link can reduce clamp retention. Repeatedly tightening the same bolt without inspecting the joint may allow the damage to progress.
Sep 03,2026
Excavator Carrier Roller Not Turning: Safe Checks and Causes
An excavator carrier roller, also called a top roller or upper roller, supports the upper run of the track chain. If it stops turning while the chain slides across its tread, a small obstruction can become a flat-spotted roller, a damaged seal area or accelerated chain wear. The right response is to confirm the symptom safely, clean the frame, check for leakage and then assess the connected undercarriage system.
Sep 02,2026
Desert Dozer Undercarriage Maintenance in Sand and Dust
Fine sand enters gaps that larger debris cannot reach and continuously moves across track shoes, chains, rollers, idlers and sprockets. Desert maintenance is therefore less about removing one large obstruction and more about controlling abrasive contamination, checking tension in the real working condition, measuring wear consistently and matching the undercarriage configuration to low-impact but high-abrasion work.
Sep 02,2026
Excavator Undercarriage Maintenance on Concrete and Asphalt
Concrete and asphalt provide firm support, but they also create high traction and little relief when a steel-track excavator turns. Sharp steering, counter-rotation and unsuitable shoes can increase side loading while also damaging the finished surface. A practical urban-site plan combines approved track mats, controlled travel, daily component inspection and machine-specific wear measurement.
Related Posts
How Should The Supporting Wheels Be Selected To Avoid Stepping On Thunder?
High-quality support wheels mainly depend on the performance of its steel. The material of the roller body is generally 50Mn, 40Mn2, (MN: synonymous with the element of manganese).
Carrier Wheels Are Suitable For Various Models At Home And Abroad
Sprocket wheels are mainly used in various crawler bulldozers, excavators, pavers, milling machines, rotary drilling rigs or other crawler machinery equipment at home and abroad.
Contact Us
E-mail :
sales@china-ysm.com
Phone/WhatsApp：
+86-18606961587
Address：
No.8 Binjiang Street, Binjiang Industrial Zone, Xiamei Town, Nan An City, Quanzhou City, Fujian Province, China
Request Quote
Andy Shi
No.8 Binjiang Street, Binjiang Industrial Zone, Xiamei Town, Nan An City, Quanzhou City, Fujian Province, China
Request Quote