Strict Quality
Advanced production equipment, improve the detection technology, strict management, We guarantee product quality.
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.
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:
📌 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.
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.
5 warning signs of a failing track adjuster grease cylinder:
📌 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.
Our 3-stage heat treatment process ensures maximum wear resistance:
📌 Quality guarantee: We perform hardness testing on every batch using a Rockwell hardness tester. Test reports are available upon request.
Yes, we provide a tiered warranty structure:
📌 What's covered: Material defects, seal failure, premature wear due to improper heat treatment. Normal wear and tear from abrasive materials is excluded.
Yes, sample orders are welcome.
Sample process:
📌 Free sample policy: For first-time customers ordering 200+ pieces, we ship up to 2 samples free of charge (excludes freight).
Lead times by order type:
📌 Express option: Add 15% rush fee for 50% lead time reduction (subject to production schedule).
To identify the correct track roller, provide us with ONE of the following:
📌 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.
Undercarriage parts factory
Product Quality Guaranteed
Quality Certification
Processing Method
FAJX PARTS upgraded Komatsu PC20 track roller 9237948. Made of forged 40Mn2 alloy steel with medium-frequency quenching and CNC machining within 0.02mm tolerance. Fits PC20-2/3/6/7 mini excavators. Equipped with Cr16Mo2NiCu floating oil seal, mud & temperature resistant. Service life matches or exceeds OEM parts.
A top roller is a critical component in an excavator’s undercarriage system, supporting the upper section of the track chain and helping maintain stable track movement. When a top roller wears out or fails, operators may experience abnormal track noise, uneven movement, increased fuel consumption, and expensive downtime. This article explains how top rollers work, why they matter, how to select the right component, and how professional solutions from Quanzhou Qiansheng Heavy Industry Machinery Co., Ltd. can help improve excavator reliability and operating efficiency.
Oil leakage of track rollers is mostly caused by damaged sealing components, followed by issues from assembly, machining, operating conditions and lubricating oil. The interior of a track roller is filled with gear oil, which relies on floating oil seals (dual‑metal rings plus O‑rings) for rotary sealing. Oil seepage or dripping will occur once the seal fails.PC1250 Track Roller
Our integrally forged track roller is manufactured from high-strength alloy steel via heavy-duty forging, outperforming conventional cast and welded assembled rollers greatly:
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 heavy equipment to move efficiently across different working environments. However, many operators experience problems such as excessive wear, track slipping, abnormal noise, and increased maintenance costs due to poor-quality or incorrectly matched drive sprockets.
The track bottom roller is one of the most important components in an excavator undercarriage system. Although it works continuously under the machine, many operators only notice its importance when problems such as abnormal noise, track instability, excessive wear, or unexpected downtime occur. A high-quality track bottom roller supports the weight of the excavator, guides the track chain, reduces friction, and helps maintain smooth movement during heavy-duty operations.
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.
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.
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.
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.
