4357785 Track Bottom Roller
Quanzhou Qiansheng Heavy Industry Machinery Co., Ltd. wholesales HIT4357785 Track Bottom Roller, supporting trial orders and bulk purchase for global excavator parts dealers. This OEM replacement fits Hitachi EX55 mini excavators perfectly. Made of 40Mn2 forged alloy steel with medium-frequency quenching, it delivers HRC52-58 tread hardness and 6-10mm hardened layer for excellent wear & impact resistance. Double floating seal blocks mud and water; 42CrMo spindle cuts friction for 40% longer service life. Full factory QC and ample stock ensure fast global delivery.
Excavator Bottom Track Roller EX55
Quanzhou Qiansheng Heavy Industry Machinery Co., Ltd. wholesales Hitachi EX55 Track Roller, supporting trial orders and long-term bulk purchase for global excavator parts dealers. This roller perfectly fits EX55 mini excavators with standard OEM mounting size for direct installation.
Made of 40Mn2 alloy steel via closed forging and medium-frequency quenching, tread hardness HRC52-58 with 6-10mm hardened layer, great wear and impact resistance on harsh construction sites. Double floating cone seal stops mud and water intrusion; 42CrMo spindle plus copper bush lowers friction, extending service life by over 40%. Full factory QC inspection, adequate stock and fast delivery for overseas buyers.
1181-00430 Bottom Roller
Quanzhou Qiansheng Heavy Industry Machinery Co., Ltd. supports bulk purchasing and customization of the 1181-00430 type undercarriage roller (also known as track roller), suitable for Volvo EC55 mini excavators, OEM number VOE14543561. This chassis wear part is made of high-manganese alloy steel, undergoing two heat treatments to achieve a wheel surface hardness of HRC48-55. The deep hardening layer significantly improves its wear resistance on mud, rocks, and rough terrain. A multi-layer oil seal structure effectively blocks water and sand, completely preventing oil leaks and roller jamming. CNC precision machining ensures a perfect match between the installation dimensions and original parts, allowing for direct replacement without modification. One-piece casting improves load-bearing capacity, effectively reducing track chain wear and machine downtime. Strict quality control throughout the entire process ensures stable product quality, long service life, and cost savings for global machinery dealers, repair shops, and engineering vehicle fleets.
Excavator Carrier Roller EX200-2
Installation position: The Excavator Carrier Roller EX200-2 is mounted on the upper part of the track frame, between the guide wheel and the drive wheel. Depending on the model, one to two are installed on each side.
Functions:
Support the upper track to prevent sagging and shaking;
Reduce vibration and wear during track operation;
Keep the track properly tensioned and aligned to avoid deviation.
Track Roller for SY245
Qiansheng Heavy Industry supplies Track Roller for SY245 excavator undercarriage. Factory direct OEM supply with heat-treated rollers, precision machining, strict inspection ensure stable sealing and durability. OEM replacement for Sany fleet Used in mining and construction equipment. Samples and drawings for bulk orders.
Track Roller for Hitachi ZX470
Quanzhou Qiansheng Heavy Industry Machinery Co., Ltd. supplies Track Roller for Hitachi ZX470 for excavator undercarriage replacement and OEM maintenance. Designed for mining and heavy construction use, this roller is produced with forged steel, CNC machining, and heat treatment to improve wear resistance and sealing stability. It helps reduce downtime, supports stable track movement, and fits ZX470/ZX470LC models. Many buyers choose us for consistent quality control, stable delivery time, and practical field performance in harsh working conditions.
Track Roller for Sany SY60
At Quanzhou Qiansheng Heavy Industry Machinery Co., Ltd., we supply Track Roller for Sany SY60 designed for stable undercarriage performance in excavators working under continuous load conditions. Manufactured with forged steel and precision heat treatment, each roller is built for consistent alignment, reduced track vibration, and longer service intervals. We support bulk order, OEM customization, and fast shipment for distributors and contractors needing reliable replacement parts for SY60 machines in construction and mining environments.
Carrier Roller for Komatsu PC300-7
As a manufacturer of undercarriage parts based in Quanzhou, we supply Carrier Roller for Komatsu PC300-7 for excavators working in mining and construction environments. Our roller is designed with heat-treated steel, stable sealing performance, and strict dimensional control. Customers choose us for consistent fit, stable rotation under load, and reduced maintenance downtime. We support OEM and wholesale orders with full inspection before shipment.
Track Roller for Komatsu PC60-5
At Quanzhou Qiansheng Heavy Industry Machinery Co., Ltd., we supply Track Roller for Komatsu PC60-5 for excavator undercarriage replacement and maintenance. Each unit is manufactured through forging, CNC machining, heat treatment, and full inspection. We focus on sealing performance, wear resistance, and dimensional stability for mining and construction environments. OEM and bulk orders are supported with stable production records and traceable quality control, helping reduce downtime in real field operations.
Track Adjuster Assembly for Komatsu PC400-7 208-30-54140
Quanzhou Qiansheng Machinery supplies Track Adjuster Assembly for Komatsu PC400-7 208-30-54140, designed for stable undercarriage tension and performance. Manufactured in Quanzhou factory with heat-treated steel, CNC machining and strict inspection, suitable for mining and construction machines OEM
Track Adjuster Assembly for Komatsu PC200-8 20Y-30-42130
Qiansheng Heavy Industry supplies durable Track Adjuster Assembly for Komatsu PC200-8 20Y-30-42130 designed for stable track tension and long working life under demanding excavation conditions. Manufactured with strict heat treatment and precision machining, our assemblies are widely used by repair contractors, machinery dealers, and mining equipment service companies looking for reliable aftermarket undercarriage parts with stable supply and OEM customization support.
Track Adjuster Cylinder for Hitachi ZX200-3 9243267
At Quanzhou Qiansheng Heavy Industry Machinery Co., Ltd., we manufacture the Track Adjuster Cylinder for Hitachi ZX200-3 9243267 for customers who demand stable track tension, longer undercarriage life, and lower downtime costs. Built with precision-honed seamless steel tubing, heavy-duty polyurethane seals, and anti-corrosion chrome-plated components, our grease cylinder delivers reliable sealing performance in mining, quarry, and heavy excavation conditions. Ideal for wholesalers, machinery dealers, repair workshops, and fleet owners seeking factory-direct purchasing with dependable OEM quality.
Track Adjuster Assembly for Doosan DX225LC K1038864
Qiansheng Heavy Industry supplies durable and precision-engineered Track Adjuster Assembly for Doosan DX225LC K1038864 designed for demanding excavator working conditions. Manufactured with high-strength steel, advanced heat treatment, and strict quality inspection, our assemblies provide stable track tension, reduce abnormal wear, and extend undercarriage service life. We support OEM and bulk purchasing requirements for global distributors, contractors, and machinery repair companies seeking reliable aftermarket undercarriage solutions.
Track Adjuster Assembly for Kobelco SK200-8 YN54D00014F1
Built for demanding excavation and earthmoving conditions, the Qiansheng Track Adjuster Assembly for Kobelco SK200-8 YN54D00014F1 delivers stable track tension, improved undercarriage protection, and long service life. Manufactured with precision machining and strict heat treatment processes, this assembly is widely chosen by equipment dealers, repair workshops, and construction contractors looking for durable OEM-quality replacement parts with fast supply and reliable support.
Track Adjuster Assembly for Volvo EC210B 14562924
As a professional manufacturer and factory in China, Quanzhou Qiansheng Heavy Industry offers premium Track Adjuster Assembly for Volvo EC210B 14562924 with full OEM compatibility. Unlike low-grade aftermarket alternatives, our unit adopts integral forging and standardized heat treatment, featuring anti-leakage sealing, precise tension control and heavy-load durability. With over 20 years of undercarriage production experience, we pass strict pressure and sealing tests for every piece, support bulk supply and OEM service, and export globally to help clients cut maintenance costs effectively.
Track Adjuster Assembly for Hitachi ZX200-3 9243267
Qiansheng Heavy Industry supplies durable Track Adjuster Assembly for Hitachi ZX200-3 9243267 designed for stable track tension, reduced undercarriage wear, and long service life in demanding construction and mining environments. Our factory-tested assemblies feature high-strength materials, precision machining, and reliable sealing performance, making them an ideal choice for distributors, repair companies, and excavator owners seeking dependable OEM replacement parts.
Track Adjuster Grease Cylinder 320D 239-4390
Built by Quanzhou Qiansheng Heavy Industry Machinery Co., Ltd., the Track Adjuster Grease Cylinder 320D 239-4390 is engineered for stable track tension, long sealing life, and reliable performance in mining, quarry, and heavy excavation conditions. Designed with precision-honed steel tubing and high-pressure polyurethane seals, this factory-direct undercarriage component helps reduce grease leakage, track derailment, and costly downtime for Caterpillar 320D excavators worldwide.
Track Adjuster Grease Cylinder for ZAX200
Qiansheng Heavy Industry supplies high-performance Track Adjuster Grease Cylinder for ZAX200 excavators, designed for stable track tension adjustment and long-term durability in demanding construction and mining conditions. Manufactured with precision machining and strict heat treatment processes, our grease cylinders offer excellent sealing performance, reduced oil leakage, and reliable service life. As a professional undercarriage parts manufacturer in China, we support OEM customization, fast delivery, and global wholesale procurement for excavator parts distributors and contractors.
Track Adjuster Grease Cylinder for Komatsu PC200 20Y-30-29130
We, Quanzhou Qiansheng Heavy Industry Machinery Co., Ltd., supply high-performance Track Adjuster Grease Cylinder for Komatsu PC200 20Y-30-29130 with strict factory inspection and stable hydraulic sealing performance. Designed for heavy-duty excavator undercarriage systems, it ensures smooth track tension adjustment, reduces downtime, and extends service life. Buyers choose our OEM-quality parts for reliable fit, fast delivery, and proven field durability in mining and construction projects worldwide.
Track Adjuster Grease Cylinder for Cat 320D 239-4382
Sourced from Quanzhou Qiansheng Heavy Industry Machinery Co., Ltd., we supply Track Adjuster Grease Cylinder for Cat 320D 239-4382 with heavy-wall seamless steel, precision honed bore and premium seals, ensuring stable track tension, reduced leakage and lower downtime.
Excavator Track Guide for Komatsu PC200-7 20Y-30-31160
At Quanzhou Qiansheng Heavy Industry Machinery Co., Ltd., we manufacture the Excavator Track Guide for Komatsu PC200-7 20Y-30-31160 for mining and construction use. Made from high-strength steel with CNC precision, it reduces derailment risk, protects rollers, extends undercarriage life, and ensures OEM replacement quality with factory-direct supply and stable global delivery.
Excavator Track Guard for Komatsu PC200-8 20Y-30-11312
We supply high-precision Excavator Track Guard for Komatsu PC200-8 20Y-30-11312 with strict OEM standards. Designed for heavy-duty protection of undercarriage systems, this part ensures stable track alignment, reduced wear, and longer service life. Ideal for distributors and repair contractors seeking durable and cost-effective excavator spare parts with fast global delivery and consistent quality control.
Excavator Track Guard for Doosan DX225LC 200112-00022
As a professional manufacturer of undercarriage parts, Quanzhou Qiansheng Heavy Industry supplies high-quality Excavator Track Guard for Doosan DX225LC 200112-00022. Built with high-strength alloy steel and precision forged, this track guard delivers superior impact resistance and durability. Designed for perfect compatibility with Doosan DX225LC, it effectively protects tracks and undercarriage components in mining, construction, and earthmoving projects. As a reliable supplier, we offer factory-direct pricing, strict quality control, and global after-sales service.
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Advanced production equipment, improve the detection technology, strict management, We guarantee product quality.
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From purchasing raw materials to product development, processing, testing, packaging, product delivery and acceptance of the entire production process, strict implementation of quality management system in accordance with international standards.
What is the difference between single flange and double flange track rollers?
Single flange track rollers are designed for standard excavators operating on flat or moderately uneven terrain. They allow slight lateral track movement, reducing stress on the undercarriage frame.
Double flange track rollers have flanges on both sides, providing maximum lateral guidance. They are recommended for:
- Heavy-duty mining operations
- Sloped or rocky terrain
- Long-track excavators (e.g., PC200, CAT320D)
- Machines with high travel speed requirements
📌 Qiansheng recommendation: For most 20-30 ton excavators, we recommend double flange on the outer positions and single flange on inner positions for optimal balance.
What is your MOQ for OEM logo undercarriage parts?
Standard MOQ: 50 pieces per part number (mix models accepted).
OEM logo MOQ: 200 pieces per part number for laser engraving or casting with your brand.
Sample order: 1-5 pieces available for quality testing – we can ship via DHL/FedEx within 7 days.
📌 For distributors signing annual contracts, MOQ can be reduced to 30 pieces per shipment. Contact us to discuss your volume.
How do I know if a track adjuster grease cylinder is failing?
5 warning signs of a failing track adjuster grease cylinder:
- 🔴 Track keeps loosening after adjustment
- 🔴 Grease leaking from the cylinder body or valve
- 🔴 Unable to build pressure when greasing
- 🔴 Visible rust or pitting on the chrome rod
- 🔴 Track derails frequently during turning
📌 Preventive tip: Replace grease cylinders every 4,000-5,000 operating hours or immediately when leakage is detected to avoid track chain and sprocket damage.
What heat treatment process do you use for track rollers?
Our 3-stage heat treatment process ensures maximum wear resistance:
- 1. Induction hardening – Surface hardness reaches HRC 52-56, depth 4-6mm
- 2. Tempering – Relieves internal stress, prevents cracking under impact
- 3. Controlled cooling – Ensures uniform hardness across the entire roller
📌 Quality guarantee: We perform hardness testing on every batch using a Rockwell hardness tester. Test reports are available upon request.
Do you offer warranty on undercarriage parts?
Yes, we provide a tiered warranty structure:
- Standard warranty: 12 months against manufacturing defects
- Extended warranty: 18 months for bulk orders (200+ pieces)
- Mining/Heavy-duty: 6 months under extreme conditions (subject to application review)
📌 What's covered: Material defects, seal failure, premature wear due to improper heat treatment. Normal wear and tear from abrasive materials is excluded.
Can you provide samples before bulk order?
Yes, sample orders are welcome.
Sample process:
- Select part number and quantity (1-5 pieces recommended)
- We provide proforma invoice with sample cost + shipping (DHL/FedEx/UPS)
- Production takes 5-7 working days
- Sample cost is fully refundable on your first bulk order of 100+ pieces
📌 Free sample policy: For first-time customers ordering 200+ pieces, we ship up to 2 samples free of charge (excludes freight).
What's your typical lead time for undercarriage parts?
Lead times by order type:
- Stock items: 3-7 days (Komatsu PC200, CAT320, Hitachi ZX200 common models)
- Non-stock standard parts: 15-20 days
- OEM/custom parts: 25-35 days (including mold/fixture making)
- Bulk orders (500+ pieces): 40-45 days
📌 Express option: Add 15% rush fee for 50% lead time reduction (subject to production schedule).
How do I select the correct track roller for my excavator model?
To identify the correct track roller, provide us with ONE of the following:
- Option 1: OEM part number (e.g., 20Y-30-00014 for Komatsu PC200)
- Option 2: Machine model and year (e.g., CAT 320D, 2012)
- Option 3: Measurements: Bolt hole spacing, shaft diameter, overall length
- Option 4: Clear photo of the existing roller
📌 Quick tip: Most 20-25 ton excavators use 6-7 bottom rollers per side. Count yours and send us the number for cross-reference.
Quanzhou Qiansheng Heavy Industry Machinery Co., Ltd. is located in Quanzhou, Fujian Province, China, a well-known manufacturing base for construction machinery parts. Since its establishment, the company has been focusing on the production and supply of undercarriage parts for excavators and bulldozers.
At the early stage, we mainly focused on the domestic market and accumulated solid experience in manufacturing undercarriage components such as track rollers, carrier rollers, idlers, sprockets, and track chains. With continuous improvement in product quality and production technology, our company gradually expanded into the international market.
20 Years
Undercarriage parts factory
100%
Product Quality Guaranteed
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Processing Method
Yuchai Excavator Common Engine Models
As a leading domestic manufacturer of diesel engines in China, Yuchai offers a full line of excavator engines covering working requirements from mini to heavy-duty applications, which are widely deployed across various construction machinery scenarios.
Qiansheng Heavy Industry Receives ISO 9001 Certification, Strengthening Global Trust
Quanzhou Qiansheng Heavy Industry Machinery Co., Ltd. is proud to announce that our factory has recently obtained the ISO 9001 Quality Management System certification. This achievement reflects our continuous commitment to high-quality manufacturing, strict quality control, and professional management.
Overseas Clients Visit Qiansheng Heavy Industry Factory for On-Site Inspection
Recently, a group of overseas clients from Southeast Asia visited Quanzhou Qiansheng Heavy Industry Machinery Co., Ltd. to inspect our factory and production lines. The clients were particularly interested in our “Four Wheels and One Track” system, including track rollers, idlers, sprockets, and chains.
Qiansheng Heavy Industry Launches New Wear-Resistant Track Rollers for Excavators and Bulldozers
Quanzhou Qiansheng Heavy Industry Machinery Co., Ltd. is proud to announce the launch of its new wear-resistant track rollers, designed to enhance the efficiency and lifespan of excavators and bulldozers in mining, quarry, and heavy-duty construction applications.
Qiansheng Heavy Industry Showcases Latest Undercarriage Parts at International Construction Machinery Exhibition
Quanzhou Qiansheng Heavy Industry Machinery Co., Ltd. recently participated in the Bauma China exhibition in Shanghai, one of the world’s leading construction machinery trade shows. During the exhibition, we showcased our latest undercarriage parts for excavators and bulldozers, including track rollers, carrier rollers, idlers, sprockets, and track chains.
How Does a Drive Sprocket Improve Excavator Undercarriage Performance?
A drive sprocket is one of the most important components in an excavator undercarriage system. It transfers power from the final drive motor to the track chain, allowing the machine to move efficiently under different working conditions. However, many operators and equipment owners experience problems such as premature wear, track slipping, abnormal noise, and increased maintenance costs caused by unsuitable or low-quality drive sprockets.
Evaluating Undercarriage Part Quality: A Technical Reference for Procurement
For procurement managers, maintenance supervisors, and equipment dealers, the selection of undercarriage components—track rollers, idlers, sprockets, and track chains—represents a significant operational expense. The decision between original equipment manufacturer (OEM) parts and aftermarket alternatives often involves balancing initial cost against long-term durability and machine uptime.
