Track Group for Caterpillar 320D 391-3970

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.

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Product Description