Undercarriage Parts

Wonepart construction machinery chains include track chains for excavators, bulldozers, rotary drilling rigs and drive roller chains. Made of forged alloy steel 35MnB & 40Cr with deep carburized pins and bushings, track links reach HRC48-56 hardness and tensile strength over 1000MPa. We supply sealed oil-lubricated, dry and reinforced mining track chains complying with ISO standards, featuring low elongation and 4000 working-hour service life under regular conditions. Compatible with CAT, Komatsu, Sany, XCMG and other brands, OEM customization is available. Our heavy-duty track chains were massively adopted in 2026 World Cup stadium construction projects. Operating 3,200 hours nonstop under 24-hour shifts without major overhaul, they cut maintenance downtime by 65% and guaranteed on-time venue delivery. All products pass triple factory inspections, direct factory supply for mining, municipal and large-scale event infrastructure heavy-load projects.

Wonepart construction machinery rubber tracks adopt three-layer reinforced structure with high-quality rubber and high-tensile steel wire framework, featuring excellent wear resistance, tear resistance and stable adhesion. Complete specifications fit most mainstream engineering equipment. They own low noise, low ground pressure, good shock absorption and ground protection performance, heat-resistant and anti-aging, suitable for municipal engineering, mining, farmland and other harsh working conditions. Verified in Qatar World Cup stadium construction projects, these rubber tracks keep stable performance under heavy load and frequent operation. Compatible with Caterpillar, Komatsu, Kubota and other famous brands, various tread patterns are available. With long service life, sufficient stock and perfect after-sales service, they are ideal undercarriage spare parts for construction machinery.

The idler wheel is a key undercarriage part for crawler construction machinery, widely used on excavators, bulldozers, crawler cranes and other equipment to guide and tension tracks, prevent derailment and ensure stable operation.
We adopt premium ZG35CrMo, 40Cr and 42CrMo steel as raw materials. Through precision casting, forging and dual heat treatment, the products gain outstanding toughness and structural strength. The wheel tread is treated with high-frequency induction hardening, reaching HRC 50-60 hardness with a uniform hardened layer for superior wear resistance. All parts are precisely processed by CNC machines, equipped with floating oil seals and double dust-proof rings to deliver reliable protection against water, mud and sand.
Our idler wheels cover machines from 1.5 to 135 tons, with complete specifications of outer diameter, shaft diameter and track pitch. They work steadily at -40℃ to +80℃ and feature long service life under various working conditions. Fully compliant with OEM standards, they are directly interchangeable with parts for Caterpillar, Komatsu, Sany and other mainstream brands. Featuring high strength, tight sealing and smooth rotation, they effectively cut maintenance costs and serve as an ideal choice for engineering projects.

Construction Machinery Undercarriage Drive Sprocket | Wonepart
A drive sprocket (track sprocket) is the core power component of the “four wheels and one track” system for crawler machinery, widely used in excavators, bulldozers and crawler cranes. Wonepart, a professional construction machinery parts supplier based in Xiamen, specializes in undercarriage components, offering forged, split rim and segmented drive sprockets.
Made of 42CrMo alloy steel or high-manganese cast steel with medium-frequency hardening, the tooth hardness reaches HRC55-60, ensuring superior wear and impact resistance. It operates reliably at -40℃ to 80℃. Our track sprockets fit 5–230 ton machines with customizable pitch and tooth counts. Standard, rock and wetland teeth are available for mining, construction and wetland applications.
Wonepart drive sprockets mesh precisely with tracks to reduce wear and noise. Forged units deliver long life, while split types enable easy maintenance. We supplied drive sprockets and undercarriage parts for key projects like the Qatar World Cup Lusail Stadium, fitting Komatsu, Caterpillar, Volvo and other major brands. Wonepart is your trusted partner for quality undercarriage parts。

As a vital undercarriage part for construction machinery, the carrier roller supports track links, prevents sagging and deviation, and ensures stable operation for excavators, bulldozers and crawler cranes. It is forged from 50Mn/40MnB high-strength alloy steel. The roller surface is induction hardened to HRC50-56 with 8-12mm hardened layer, featuring excellent wear and impact resistance.
Equipped with floating oil seal, it reaches IP69K protection grade, effectively blocking sediment and water, and works steadily at -40℃ to 80℃. With high machining precision, F-type, T-type and other styles are available, fully compatible with CAT, Komatsu, Sany, XCMG and other mainstream brands. Our carrier roller is heavy-duty, low-maintenance and backed by 2500-hour warranty.
Wonepart carrier rollers have been applied to Qatar World Cup and US-Canada-Mexico World Cup infrastructure projects. It runs reliably under heavy continuous operation, with 30% longer service life and zero oil leakage, an ideal choice for mining, general construction and large-scale event projects.

Track roller is a core load-bearing part of undercarriage for excavators, bulldozers and other tracked machinery, widely used in construction and mining. Manufactured from high-quality 50Mn and 40MnB alloy steel, it is available in single flange and double flange types. The quenched wheel body reaches HRC 52-58 hardness with 8-12mm hardened layer, delivering outstanding wear resistance and impact resistance. Equipped with premium floating seal, it works reliably from -40℃ to 80℃ with excellent dustproof, waterproof and anti-leakage performance. Each set supports 5-65 tons load, fitting various tonnage construction machines.
Adopting professional forging and precision machining, our track rollers feature accurate dimensions and stable operation. Wonepart track rollers have been applied to Qatar World Cup stadium projects. They ran fault-free under high temperature, sandy conditions and 24-hour continuous operation, with 30% longer service life than average products. Our full range of models fits Komatsu, Caterpillar, XCMG, Sany and other mainstream brands. Custom service is available, making our products your ideal choice for heavy-duty undercarriage parts.