Quality Excavator Parts for Heavy Machinery

Quanzhou Qiansheng Heavy Industry directly supplies Track Group for Caterpillar 320D 391-3970. We are a source factory specializing in the manufacture of excavator travel mechanisms for 20 years. Made of 40MnB alloy steel, forged and high-frequency quenched, with a hardness of HRC 52-58. We offer OEM/ODM customization services and support sample testing. Purchase now and enjoy B2B wholesale prices and fast worldwide shipping.

The Track Group for Caterpillar 32idot 391-3970 is not an ordinary replacement part, but a core "four wheels and one track" solution designed specifically for heavy-duty working conditions, based on our 20 years of experience in tracked chassis manufacturing.

Product Specifications

Brand/ Type	Model No.
Bulldozer	D30/D31	D37EX-21	D39EX-21	D41P-6	D50/D53	D41P-3	D51EX-22
	D60/D65	D65-12	D61PX-12	D85/D80	D85-21	D155	D155A-3-5
	D155-6	D275-5	D355A-3	D375-5	D3C	D4/D4D	D5/D5B
	D5C/D5G	D6C/D	D7G	D8K/H	D8N	D8R	D9N
	D9R	D5H	D6H	D7H	D4H
	PC60	PC75	PC100	PC120	PC200	PC200-5	PC200-7
	PC300-6	PC400-6	PC450-6	PC1250-8
	E70B	E110	E120B	E215	E200B	E320	EX60-1
Excavator	EX60-2	EX60-3	EX100	EX120	EX200-1	EX300	FH200
	EC210	EC240	EC290	EC360	DH200	DH220	DH280
	DH200	DH220	DH280	DH300	DX300	DX340
	R200	R210-3	R210-7	SK200	SH200	JS200
Remark: We supply most models. What is listed are just parts of the items we have.

Why Choose Our Track Group?

1. Military-Grade Forging Technology

Many competitors' track groups experience pitch elongation after only a few hundred hours of use, leading to tooth skipping and derailment. Our Track Group for Caterpillar 320D 391-3970 is hot-forged from 40MnB alloy steel. This process ensures a dense internal grain structure, preventing early fractures caused by metal porosity. Each batch of blanks undergoes ultrasonic testing (UT) to ensure no internal defects.

 

2. S.A.L.T. Sealing Technology, Wear-Resistant Core

Track elongation is essentially caused by wear between the pins and bushings. We have introduced advanced S.A.L.T. (Sealed and Lubricated Track) technology, using a high-tonnage hydraulic press to press in high-hardness pins during assembly, combined with polyurethane dust seals.

 

Pin Hardness: HRC 52-58

Sealing Performance: Effectively prevents silica dust and mud from entering, locking in internal grease.

 

This means our Track Group for Caterpillar 320D 391-3970 can maintain pitch stability for thousands of hours, providing consistently strong grip.

 

3. Precise Matching and Rigorous Quality Inspection

We manufacture entirely to OEM standards. Every Track Group for Caterpillar 320D 391-3970 undergoes rigorous dimensional calibration and pre-stretch testing before leaving the factory to ensure perfect meshing with your excavator's idler and drive wheels, avoiding abnormal noise and wear caused by tolerances.

Procurement Guide & Service Commitment

Service Item	Details
Product Configuration	Complete Track Group: Includes track links, shoes, pins, bushes, seals, and bolts. Ready to install upon arrival. Bare Chain (Links Only): For customers who wish to reuse existing track shoes.
Customization	We support OEM/ODM orders. Need a specific number of links for a narrow or wide track setup? We can customize the count to fit your exact undercarriage requirements.
Delivery Time	Standard inventory ships within 7-15 days after payment confirmation.
Packaging	Heavy-duty anti-rust coating + Shrink wrap + Reinforced wooden pallets (Fumigation-free), ensuring the parts arrive in perfect condition after ocean transit.

Our Commitment

Quanzhou Qiansheng Heavy Industry is ISO 9001 quality system certified and CE certified. We offer a 1-year warranty on this Track Group for Caterpillar 320D 391-3970. If forging cracks or non-human-caused breakage occur under normal use, we will provide a free replacement.

 

Don't let inferior parts delay your project. Choose Quanzhou Qiansheng, choose proven durability.

As professional manufacturer and factory supplier Quanzhou Qiansheng Heavy Industry, we supply premium Track Link for Doosan DX225 200103-00096A made of high-density alloy steel via integral drop forging. Compared with ordinary aftermarket parts, our Doosan DX225 track link features stable pitch dimension, strong wear resistance and tight grease sealing structure, perfectly adapting to mining, quarry and construction heavy-duty working conditions. With ISO 9001 and CE certification, 2000+ working hours lifespan and strict full inspection, we support OEM wholesale, customized service and global fast delivery for worldwide distributors and contractors.

Doosan DX225 is a mainstream 20-ton class excavator widely used in urban construction, quarry mining, earthmoving and infrastructure engineering projects. As the core load-bearing part of the whole undercarriage system, Track Link for Doosan DX225 200103-00096A  undertakes the full machine weight, and bears long-term tensile force, sand abrasion and muddy water erosion in harsh working sites all year round.

 

As a direct local manufacturer in Quanzhou construction machinery parts base, we independently produce and supply Track Link for Doosan DX225 200103-00096A. Our core advantage is fundamentally solving the common problems of ordinary track links on the market: easy pitch elongation, loose chain body, internal wear fast and early fracture, effectively extending the overall service life of the excavator undercarriage and reducing your later maintenance replacement cost.

Technical Specifications

· OEM Part Number: 200103-00096A

· Compatible Equipment: Doosan DX225 Excavator

· Link Forging Material: High-density 35MnB / 40MnB alloy steel

· Pin and Bushing Hardness: HRC 52-58, deep induction quenching treatment

· Assembly Type: Grease-sealed design with heavy-duty polyurethane dustproof ring

· Quality Standard: ISO 9001 certified production process

· Service Life Guarantee: 1 Year warranty or 2000+ working hours

 

BRAND	CATALOGUE
BULLDOZER	D20	D30	D31	D37	D40	D41	D45	D50	D60
	D65	D68	D75	D80	D85	D150	D155	D275	D355
	D3C	D3D	D4C	D4D	D4H	D5	D6C	D6D	D6H
	D7G	D8K	D8N	D9N	D10N	D11N
KOMATSU	PC30	PC40	PC45	PC60	PC75	PC100	PC120	PC150	PC200
	PC220	PC300	PC350	PC400
CATERPILLAR	E70B	E110	E120B	E215	E235	E307	E311	E312	E322
	E180	E240	E200B	E320	E300	E300B	E330	E325
HITACHI	EX30	EX40	EX60	EX100	EX120	EX200	EX220	EX270	EX300
	EX400	EX600	UH043	UH052	UH53	UH07	UH081	UH082	UH083
FIAT-HITACHI	FH120	FH130	FH150	FH200	FH220	FH270	FH300
VOLVO	EC55	EC130	EC150	EC200	EC210	EC240	EC290	EC360
DAEWOO	DH55	DH130	DH180	DH200	DH280	DH300	DH320
HYUNDAI	R60	R130	R200	R210	R220	R290	R320	R914
KATO	HD250	HD400	HD450	HD700	HD770	HD820	HD1250
KOBELCO	SK40	SK60	SK100	SK120	SK200	SK220	SK04-2	SK07
	SK07N2	SK09	SK12	SK14	SK300	SK310	SK400
JCB	JS70	JS75	JS110	JS130	JS160	JS180	JS200	JS220
	JS240	JS260	JS300	JS330
SUMITOMO	SH70	SH100	SH120	SH160	SH200	SH260	SH265	SH280	SH300
	SH340	LS2650	LS2800	LS3400	LS4300
	MX8	SE200	SE210	SE280	MX292	SE350
MITSUBISHI	MS110	MS120	MS140	MS180

Factory Forging Process and  Core Advantage

Many ordinary aftermarket Track Link for Doosan DX225 200103-00096A adopt secondary recycled steel and simple stamping forming. The internal structure is loose with pores, pins and bushings without overall heat treatment. After a short period of use, it is easy to appear chain stretching, pitch deviation, then accelerate the wear of supporting roller, idler and sprocket, bringing unplanned downtime losses.

We follow ISO 9001:2015 quality management system strictly, all Doosan DX225 track links adopt one-piece precision drop forging. The internal metal grain is dense and arranged uniformly, greatly improving structural toughness and impact resistance. Every batch of raw materials and finished products will pass ultrasonic testing and magnetic particle flaw detection , no crack, no sand hole, quality traceable one by one.

In the link assembly process, we use high-tonnage hydraulic press to press fit high-carbon steel pin and deep quenched bushing. Equipped with imported heavy-duty polyurethane sealing ring, it can lock internal lubricating grease for a long time, isolate external sand, dust and muddy water from entering the gap. This practical structural design can minimize pin and bushing internal friction, keep track pitch stable for a long time, and avoid frequent track adjustment.

Wholesale and  Customized Supply Service

We are real factory source, no middleman markup. For global construction machinery distributors, fleet companies and engineering contractors, we provide factory direct wholesale price for Track Link for Doosan DX225 200103-00096A.

We support OEM matching and customized link quantity according to your actual working conditions, whether standard configuration for conventional DX225 machine or special lengthened track chain for swamp, wetland and long-reach working scenarios, we can complete production according to drawings and samples.

We welcome customers to apply for sample inspection first. You can test our forging density, surface hardness and assembly tolerance on site, then arrange bulk container order after confirming quality. Conventional spot goods can be delivered within 7-15 days. All products are coated with anti-rust oil, shrink wrapped and fixed on fumigation-free export wooden pallets, to ensure no rust and no damage during long-distance sea transportation.

FAQ

Q: Can I buy only the single Track Link for Doosan DX225 200103-00096A without track shoes?

A: We support flexible purchasing options. You can order separate track link assembly to match your existing track shoes, or choose the complete track group with pre-installed track shoes and high-strength bolts, directly installed and used without secondary processing.

Q: What causes track chain stretching, how do your products solve it?

A: The so-called chain stretching in actual use is caused by the wear gap between pin and bushing. We use overall deep quenching to improve pin and bushing hardness, plus fully sealed dustproof structure to block abrasive impurities, reduce internal wear fundamentally, and keep track pitch stable for long-term operation.

Q: What is your after-sales warranty if the track link breaks due to quality problem?

A: All our Track Link for Doosan DX225 200103-00096A enjoy 1 year or 2000 working hours warranty. Once verified as manufacturing defect, we provide free one-to-one replacement in your next order, fully guarantee the rights and interests of bulk procurement customers.

Choose Qiansheng Factory

Cut down your long-term undercarriage maintenance cost, and match reliable heavy-duty Track Link for Doosan DX225 200103-00096A for your Doosan excavator fleet. As a professional excavator and bulldozer undercarriage parts manufacturer with over 20 years experience, we rely on standardized production, complete certification and strict testing system to provide stable and trustworthy products for global clients.

Contact our export specialist Manager Tong

WhatsApp: +8613799896866

Follow our social media to get latest factory production, container shipment and full undercarriage parts catalog updates.

 

Quanzhou Qiansheng Heavy Industry Machinery Co., Ltd. manufactures Track Chain for Shantui SD16 14X-32-00010 for demanding earthmoving, mining, and construction applications. Built with forged 35MnB/40MnB alloy steel, deep-induction hardened pins and bushings, and sealed lubrication design, it helps reduce internal wear and prevent premature pitch elongation. As a direct factory supplier, we provide stable OEM quality, reliable durability, and faster delivery for contractors and equipment dealers seeking long service life and lower maintenance costs in harsh working conditions.

As professional manufacturer and factory supplier, Quanzhou Qiansheng Heavy Industry provides premium Track Link for Komatsu PC200-7 20Y-32-00023 with original standard size, high alloy steel material and strict heat treatment. With over 20 years of undercarriage parts production experience, we outperform ordinary aftermarket parts in wear resistance, tensile strength and fitment. Our Komatsu PC200-7 track link fits perfectly for mining, quarry and construction sites, supporting OEM wholesale and customized service with stable global supply and reliable after-sales guarantee.

As a professional China manufacturer and factory Quanzhou Qiansheng Heavy Industry Machinery supplies premium Track Link for Caterpillar 320D 9W-3138, built with high-grade alloy steel and strict heat treatment. Compared with ordinary market parts, our track link features higher wear resistance, stable meshing performance and longer service life, perfectly adapting to mining, quarry and heavy construction sites. We support wholesale, OEM customization and global direct supply, with full ISO and CE certification, strict flaw detection and reliable after-warranty to cut your equipment maintenance downtime and replacement cost.

As a professional undercarriage parts manufacturer, Quanzhou Qiansheng Heavy Industry Machinery Co., Ltd. supplies high-quality Sprocket for Doosan DH220-7 200108-00095 with stable hardness, precise tooth profile, and excellent wear resistance. Our sprockets are manufactured through strict forging and heat treatment processes to ensure smooth engagement with track chains and longer service life under heavy-duty working conditions. We support OEM customization, fast delivery, and global export service for excavator parts buyers, dealers, and contractors.