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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.
How to Extend Excavator Undercarriage Life: Failure Causes and Heat Treatment Solutions
How to Extend Excavator Undercarriage Life: Failure Causes and Heat Treatment Solutions
Jul 07,2026
As a professional excavator undercarriage parts manufacturer, Fujian Yongsheng Machinery Parts Co., Ltd. (YSM) has been providing high-quality crawler parts since 2003. With ISO9001 and ISO14001 certified production systems, YSM supplies durable undercarriage solutions to customers in the USA, Canada, UK, Singapore, Russia, Brazil, and other global markets.
Common Causes of Excavator Undercarriage Failure
1. Cracking and Damage Caused by Heavy Impact
Excavators and bulldozers often work on rocky and uneven ground. Continuous impact can cause cracks, chips, and structural damage to track links and shoes.
To improve durability, YSM uses high-quality alloy steels such as 35MnB and 40Mn2 for track chains. Through advanced quenching, tempering, and induction hardening processes, the parts achieve excellent strength, wear resistance, and impact resistance.
For track shoes, premium 25MnB steel provides a strong balance between surface hardness and bending resistance, helping machines operate reliably in demanding conditions.
2. Track Chain Stretching and Sprocket Wear
One of the most common undercarriage problems is track chain stretching. Excessive wear between pins and bushes increases chain pitch, causing poor alignment and faster sprocket wear.
YSM improves component lifespan through deeper heat treatment on high-wear areas. Track rollers, carrier rollers, and front idlers are manufactured from durable materials such as 40Mn, 45Mn, and 50Mn steel, with optimized hardness to resist continuous friction.
Sprockets and segments are produced using wear-resistant alloy steel and advanced hardening processes, helping maintain stable performance for thousands of working hours.
3. Roller Oil Leakage and Internal Failure
Roller oil leakage can cause internal damage and unexpected machine downtime. Reliable sealing and precision machining are essential for long service life.
YSM uses CNC machining technology to ensure accurate dimensions for roller shells, shafts, and sealing areas. Combined with heavy-duty duo-cone seals, the roller system effectively prevents oil leakage while protecting against mud, water, and dust.
How Heat Treatment Improves Undercarriage Parts
Heat treatment is one of the most important processes for improving crawler undercarriage durability.
It helps components achieve:
- Higher wear resistance
- Better impact strength
- Longer service life
- Reduced maintenance frequency
- Lower operating costs
By combining advanced metallurgy, precision machining, and strict quality control, YSM produces reliable undercarriage parts for excavators, bulldozers, and other heavy machinery.
Why Choose YSM Undercarriage Parts?
YSM provides OEM and replacement undercarriage solutions, including:
- Track chains
- Track rollers
- Carrier rollers
- Front idlers
- Sprockets and segments
- Track shoes
With years of manufacturing experience and global export capability, YSM helps customers reduce downtime and improve equipment efficiency.
Frequently Asked Questions
How long do excavator undercarriage parts last?
The service life depends on working conditions, maintenance, and part quality. High-quality heat-treated components can significantly extend operating hours.
What causes excavator undercarriage failure?
Common causes include heavy impact, poor lubrication, excessive friction, and low-quality materials.
Does YSM provide OEM undercarriage parts?
Yes. YSM supports OEM manufacturing according to customer drawings, samples, and technical requirements.
Contact YSM for Reliable Undercarriage Solutions
Looking for durable excavator undercarriage parts?
Contact YSM for professional OEM solutions, competitive pricing, and reliable manufacturing support.
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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