-
-
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
Aug 17,2026
Excavator Track Guiding Guard: Inspection and Fitment Guide
An excavator track guiding guard is a structural undercarriage component that helps guide the link assembly and protect rollers and related areas from rock and debris. It is not a cure for an incorrectly adjusted track, a worn chain or a damaged idler. Checking the guard together with the track path gives operators a better chance of finding contact damage before the problem spreads.
Aug 17,2026
Bulldozer Track Roller Inspection: Wear, Leaks and Maintenance
Lower track rollers carry a bulldozer's weight while guiding the track chain along the roller frame. Because they work close to dirt, rock, moisture and impact loads, a small oil trace, a roller that does not rotate normally or an uneven wear pattern can be an early warning. The practical response is a structured inspection of the entire undercarriage, not replacing one roller by appearance alone.
Aug 14,2026
How to Identify an Excavator Sprocket Before Ordering
Two excavator drive sprockets can look nearly identical and still differ in tooth geometry, mounting pattern, pilot diameter or offset. A reliable inquiry starts with the machine identity and part reference, then uses measurements and track-chain information to confirm the candidate. Tooth count or one mobile-phone photo is not enough.
Aug 14,2026
Excavator Long-Distance Travel: Undercarriage Heat, Wear and Inspection
Crawler excavators can travel around a jobsite, but repeated long tracking is not the same duty as digging from one position. Every revolution makes the chain articulate around the sprocket and idler while rollers carry the machine load. A planned inspection before and after a long move helps operators spot changes without treating normal warmth as proof of a failed part.
Aug 13,2026
Volvo EC210 Undercarriage Parts Guide: How to Avoid Series and Fitment Mistakes
“Volvo EC210 undercarriage parts” describes a useful search category, but it is not enough information for a safe order. Current EC210 machines, EC210D, EC210B and regional configurations can differ in chain, shoe, roller, guard and serial-specific parts. The correct process begins with the full designation and machine plate, then confirms the existing component and its measurements.
Aug 13,2026
Excavator Maintenance After Heavy Rain and Mud: What to Check Before the Next Shift
Heavy rain changes more than surface appearance. Mud can pack around the undercarriage, wet grit can hide leaks and loose hardware, condensation or water can collect in the fuel system, and moisture can expose weak electrical connections. A post-rain inspection should therefore cover the complete excavator—not just wash the tracks.
Aug 12,2026
Excavator Track Roller Not Turning: Causes, Warning Signs and Safe Inspection
A track roller that does not rotate can drag against the track-chain rail instead of rolling with it. That friction may generate heat and wear a flat path into the roller shell, but “not turning” is still a symptom—not a complete diagnosis. Packed material, a seized internal bearing or bushing, lubricant loss, seal damage, misalignment and excessive track tension all require consideration.
Aug 12,2026
Komatsu PC200-10M0 Undercarriage Parts Guide: Identify Components Before Ordering
A PC200-10M0 undercarriage quotation should begin with the complete machine identity—not simply “PC200.” Series, market specification, shoe option, serial number and previous repairs can change the required component or hardware. This guide explains the main wear parts, the official base configuration and the checks that reduce avoidable fitment errors.
Aug 11,2026
Bulldozer Track Won't Stay Tight: Adjuster, Recoil and Wear Checks
If a bulldozer track is adjusted correctly but soon becomes loose again, do not keep pumping grease into the system. The symptom may come from an external grease leak, a relief valve or fitting that is not sealing, internal adjuster bypass, restricted idler movement, advanced chain wear, an idler near the end of available travel, or a measurement made under different packing conditions. The recoil spring and grease-filled adjuster also contain stored energy, so diagnosis must begin with safe inspection rather than disassembly.
Aug 11,2026
Excavator Track Chain Jumping on the Sprocket: Causes and Safe Checks
A bang, lurch or visible chain rise at the drive sprocket is a stop-and-inspect symptom. An excavator track chain may jump or climb because it is too loose, the chain pitch and sprocket profile are badly mismatched, a joint is stiff, debris is packing the drive area, or the running system is no longer guiding the chain correctly. It is not safe to assume that adding grease or replacing the sprocket alone will solve every case.
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