-
-
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 15,2026
Dozer Track Shoe Bolts Loose: Causes, Inspection and Repair
If dozer track shoe bolts keep coming loose, stop and inspect the bolted joint rather than repeatedly tightening the visible bolt. Loose hardware can allow movement between the shoe and link, damaging mating faces, bolt seats, holes, nuts and link surfaces. The cause may involve installation, damaged hardware, worn parts, contamination or operating loads, so the complete joint must be checked.
Sep 15,2026
Excavator Sprocket Wear Signs: Hooked Teeth and Chain Matching
Excavator sprocket wear signs include teeth that become thin, pointed, hooked, unevenly polished, cracked or chipped. Noise, chain climb and rough travel add urgency, but they do not prove that the sprocket alone has failed. The sprocket, track-chain pitch, bushings, tension, rollers, idler, guides and mounting area must be evaluated as one wear system.
Sep 14,2026
Dozer Track Pin and Bushing Turn: Turn or Replace?
A pin-and-bushing turn can present a different wear surface to the sprocket on a serviceable conventional track chain, but it is not an automatic mid-life repair for every dozer. The decision depends on track type, internal pitch extension, external bushing wear, link condition, seals, press fits, sprocket profile, roller wear and the cost of qualified shop work. Measurements must come before the turn.
Sep 14,2026
Excavator Track Adjuster Grease Leak Troubleshooting Guide
If an excavator track becomes loose soon after grease is added, the track adjuster may be leaking, but the visible symptom does not identify the failed part by itself. Grease can escape at the fitting, relief valve, cylinder seal or another path, while packed material, a restricted idler or advanced chain wear can create a similar adjustment complaint. A safe diagnosis begins with cleaning, location evidence and model-specific measurements.
Sep 11,2026
CASE 2050M Dozer Undercarriage Inspection Guide
The CASE 2050M can be configured for different track widths and applications, so a useful undercarriage inspection begins with machine identity rather than a generic parts list. Chain, rollers, carrier rollers, front idlers, sprockets, shoes, guides and hydraulic adjusters work as one wear system. Mapping their condition before replacement helps prevent an LT, XLT or LGP configuration from being treated as interchangeable.
Sep 11,2026
Volvo EC220E Preventive Maintenance Checklist
Preventive maintenance on a Volvo EC220E is not a single oil-change task. A useful routine connects cooling airflow, fluid condition, hydraulic leakage, attachment settings, structural joints, electrical warnings and undercarriage wear. The checks below help an operator build a repeatable record while leaving service intervals, pressure tests and wear limits to the manual for the exact machine.
Sep 10,2026
John Deere 850 P-Tier Dozer Undercarriage Maintenance Guide
Dozer undercarriage wear is strongly influenced by pushing load, turning, reverse travel, shoe choice and ground conditions. For an 850 P-Tier, a useful inspection connects those operating factors with the condition of all eight track rollers, the sealed chain, front idler, segmented sprocket, shoes, guides and adjuster. The result should be a measured maintenance plan, not a diagnosis based on one worn tooth or one loose shoe.
Sep 10,2026
Hitachi ZX210LC-7 Undercarriage Inspection and Parts Guide
A crawler excavator undercarriage is a connected wear system. On a ZX210LC-7, the track chains, lower and upper rollers, front idlers, sprockets, shoes, guards and adjusters should be inspected together. A clean, repeatable survey helps distinguish normal application wear from a developing fault and gives a parts supplier the information needed for a reliable fitment review.
Sep 09,2026
Komatsu D37EX-24 and D37PX-24 Undercarriage Maintenance Guide
The D37EX-24 and D37PX-24 share a model family but use different standard track widths in current Komatsu information. The EX configuration emphasizes a narrower track arrangement, while the PX uses wider shoes for lower ground pressure. Maintenance and replacement planning must therefore begin with the complete model, serial number and installed undercarriage rather than the D37 name alone.
Sep 09,2026
Hyundai HX220A L Undercarriage Inspection and Parts Guide
The HX220A L undercarriage carries a machine in the 22-ton class through nine lower rollers per side in the current European product description. That long support layout still works as one wear system: track chains, rollers, carrier rollers, front idlers, sprockets, shoes, guards and tension must be inspected together before replacement parts are selected.
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