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Quanzhou Doqi Machinery Co., Ltd. specializes in high-quality track system components including track rollers, sprockets, idlers, track links, bucket teeth, and hydraulic cylinders. Trusted by construction firms worldwide.
Quanzhou Doqi Machinery Co., Ltd. is located in Quanzhou City, Fujian Province — one of China's most advanced manufacturing hubs. We specialize in providing durable undercarriage replacement parts for excavators, bulldozers, and other tracked earthmoving equipment.
Our product range includes track rollers, carrier rollers, sprockets, idlers, track link assemblies, bucket teeth, bushings, pins, bolts & nuts, support arms, connecting rods, mufflers, springs, track cylinders, and associated components.
Zero defect, zero complaints policy
Serving clients across 50+ countries
We offer a comprehensive selection of undercarriage spare parts engineered for durability, precision fit, and long service life.
High-load capacity rollers for smooth track movement and extended lifespan.
Durable steel track chains designed for heavy-duty excavation and construction.
Hardened alloy teeth for superior digging performance and wear resistance.
Precision-machined sprockets for reliable power transmission and alignment.
Front and rear idlers with sealed bearings for reduced maintenance.
Steel track shoes for Komatsu, CAT, Hitachi, and other major brands.
Top rollers with reinforced seals to handle extreme operating conditions.
High-strength pins for secure bucket attachment and long-term reliability.
We combine advanced manufacturing with customer-first service to deliver unmatched value.
Exceeding industry standards in precision machining and material durability.
Dedicated after-sales team ready to assist you anytime, anywhere.
Over 10 precision production lines enable cost-effective bulk manufacturing.
Professional engineers and technicians providing technical support and customization.
Latest excavator and bulldozer spare parts now available for wholesale.
For R320LC-7 excavator – high wear resistance, precision tooth profile.
2025 model – enhanced sealing and load capacity.
Front idler for D6R dozer – direct replacement, long service life.
Compatible with EX400H-3, EX400-2, EX400-5 – factory price.
Bottom roller for HD500, DX60W, DH225 – high durability.
Internal gear slew ring for EC390 – precision engineered.
For inquiries, quotes, or technical support, please visit the official Doqi Machinery website to contact the team directly.
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