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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.
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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.
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BlogSuppliers who pass Quality ManagementSystem Certification, and have onsitematerials or finished products inspected,as certified by independent third parties.
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Leading chinese undercarriage pars & Machinery part supplier
Oct 15,2026
Komatsu PC360LC-11 Undercarriage Inspection and Parts Guide
The PC360LC-11 is a large crawler excavator, and its undercarriage carries substantial working and travel loads. Current Komatsu specifications identify a sealed track, hydraulic adjusters, eight track rollers and two carrier rollers per side on the listed configuration. Those figures help an inspection, but they do not replace the serial number, installed-part evidence, or market-specific parts information.
Oct 15,2026
Excavator Track Pin Walking Out: Inspection and Repair Guide
A track pin that no longer sits evenly in the link assembly is not just a cosmetic issue. The pin helps hold adjacent track links together and forms the hinge with the bushing. Visible outward movement can threaten sealing, alignment, nearby hardware, and ultimately chain retention. This guide explains how to recognize the symptom, control immediate risk, and gather the evidence a repair shop or parts supplier needs.
Oct 13,2026
Excavator Track Chain and Sprocket Wear: Inspection and Replacement Planning
The drive sprocket transfers travel torque into the track chain through repeated contact with the bushings. As internal pin-and-bushing wear changes chain pitch, the bushings no longer enter every tooth at the same ideal position. Tooth wear can then change the contact again. That is why a track chain and sprocket should be inspected as a mating system, even when only one component looks obviously worn.
Oct 13,2026
Cold Weather Excavator Undercarriage Maintenance: Snow and Frozen-Mud Guide
Snow, wet soil and clay can pack around an excavator undercarriage during the shift and freeze after shutdown. The resulting solid mass may restrict rollers, interfere with the idler or sprocket, change apparent track sag, damage guards, and overload the chain when the machine moves again. Winter maintenance should therefore focus on cleaning, inspection, correct parking, and model-specific checks rather than simply adding more tension.
Oct 12,2026
JCB JS220 Undercarriage Inspection and Replacement Parts Guide
The JCB JS220 is a 22-tonne-class tracked excavator, but the model name alone does not identify every undercarriage component. JS220, JS220LC, market specification, serial range, shoe option, and previous repairs can change the installed track group. Accurate maintenance and replacement planning therefore begin with the machine plate and the actual crawler frame.
Oct 12,2026
Excavator Track Roller vs Carrier Roller: Identification and Fitment Guide
Track rollers and carrier rollers both guide the crawler chain, but they work in different positions and under different loads. Confusing them can lead to the wrong quotation, incorrect mounting dimensions, or a repair that ignores the real wear pattern. This guide explains how to identify each roller and what information is needed for reliable replacement selection.
Oct 10,2026
Dozer Front Idler Wear: Alignment, Tension and Replacement Guide
The front idler guides the track chain around the front of a bulldozer frame and moves with the adjuster to maintain the specified track position. Tread wear, flange ridging, leakage, side play, guide wear, or an idler that sits crooked can affect the chain, rollers, guards, and tension system.
Oct 10,2026
Komatsu PC200-8 Undercarriage Inspection and Parts Fitment Guide
The PC200-8 name covers more than one crawler configuration. PC200-8, PC200LC-8, regional builds, PC200-8M0, hybrid versions, serial-number changes, shoe options, and application packages may use different undercarriage details. Reliable inspection and parts selection therefore begin with the complete plate and installed track group, not the base model alone.
Oct 09,2026
Dozer Sprocket Segment Wear: Chain-Match and Replacement Guide
A dozer sprocket or bolt-on segment group transfers final-drive torque into the track bushings. Hooked teeth, deformed pockets, cracked segments, loose hardware, or poor bushing contact are not isolated appearance problems: they can indicate a worn or mismatched chain, incorrect tension, packing, alignment, or severe operating loads.
Oct 09,2026
Excavator Track Keeps Coming Off: Causes and Inspection Guide
A track that repeatedly comes off is not repaired simply by putting it back on. De-tracking can result from incorrect model-specific tension, packed material, worn or damaged guiding parts, an adjuster that does not hold, frame misalignment, unsuitable operating technique, or an incorrect replacement track. The event pattern should guide a safe system inspection.
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
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Andy Shi
No.8 Binjiang Street, Binjiang Industrial Zone, Xiamei Town, Nan An City, Quanzhou City, Fujian Province, China
Request Quote