Komatsu D155 Dozer Track Idler Assembly - Forged Tension Roller

Struggling with premature track idler failures on your Komatsu D155 dozer? Need a tension roller assembly that withstands heavy-duty earthmoving and mining demands? YinTai Parts, a trusted global supplier of excavator and dozer undercarriage components, introduces the Forged Track Idler Assembly for Komatsu D155—engineered to deliver unmatched durability, precision, and cost efficiency for your bulldozer fleet.

1. What is a Idler?

The "Tension Core" of Bulldozer Undercarriages
As a critical component of the track tensioning system, the idler assembly maintains proper track sag, guides track alignment, and absorbs impacts during operation. Our forged tension roller features a splined shaft-roller connection and heavy-duty steel construction, designed specifically for Komatsu D155 dozers. By optimizing bearing contact area and torque transmission, this assembly reduces wear by 45% compared to standard cast idlers, ensuring seamless integration with your dozer’s track chain, sprockets, and rollers.

2. Idler Characteristic

✅ 1. Forged Strength for Extreme Conditions

• Hot-Forged Alloy Steel Construction: 1,600-ton press forming creates a denser grain structure, improving impact resistance by 30%
• Rock-Resistant Guard Design: Thickened steel shields protect against debris intrusion in mining, quarry, and landfill applications
• IP68 Sealing System: Double-lip seals with grease chambers block dust/water, extending service life in harsh environments

✅ 2. Precision Tensioning Technology

• Adjustable Tension Mechanism: Fine-tune track sag without full disassembly, saving 50% maintenance time
• Self-Aligning Bearings: Reduce lateral stress on tracks, minimizing (track drift) and improving straight-line tracking accuracy
• Lubrication Optimization: Direct grease injection ports ensure consistent lubrication to high-wear interfaces

✅ 3. Extended Undercarriage Life

• 50% Reduced Bearing Stress: Patent-pending bearing design cuts load on rollers, extending component life to 8,000+ hours
• System Synchronization: Matches wear rates of Komatsu OEM track components for balanced undercarriage performance
• Cost Savings: Lowers annual maintenance costs by 40% via fewer replacements and downtime reductions

✅ 4. Safety-Enhanced Design

• Anti-Fatigue Fracture Resistance: Passed 1.8x rated load testing to eliminate sudden failure risks
• Reduced Maintenance Exposure: Long-life design minimizes operator contact with moving parts during servicing
• ISO Certified Quality: Meets or exceeds OEM standards for reliability and safety compliance

✅ 5. Dozer-Specific Performance

• Heavy-Duty Track Compatibility: Perfectly matched to Komatsu D155 track pitch (203.2mm) and gauge
• Thermal Stability: Maintains structural integrity under prolonged high-temperature operation (up to 120°C)
• Noise Reduction: Precision-machined surfaces reduce track vibration and operational noise by 15%

3. Design/Structure/Main Dimensions of Installation

4. Production Processes

5. Hot Sale Products

6. Our Advantages

• World-class quality

• Factory sale directly with reasonable price

• Flexible payment terms including T/T,L/C and so on

• Fast delivery within 30 days after contract established

• After-sale services: video technical support, 24h online support

Are you still plagued by the absence of a top-quality excavator idler? Look no further than YinTai Parts, a leading manufacturer and supplier of excavator idlers in China. We boast an array of high-quality products available for purchase. With over three decades of experience and extensive expertise in the field, we guarantee the superior quality and exceptional performance of our products, ensuring your satisfaction.

XIAMEN YINTAI MACHINERY CO., LTD. is loed in the beautiful port city of Xiamen. It is a manufacturing enterprise which is focusing on research and development, production and trade of construction machinery parts.

YinTai cooperates with Chinese famous large steel mills, such as Fujian Sangang Group, Xinyu Iron and Steel Group, Hang Zhou Iron & Steel, Baogang Group etc. We strictly control cost and quality from raw materials and transportation. Not only can we manufacture the products with specific raw material according to customer requests, but also provide customers with personalized customization, YinTai strives to maximize customer benefits.

YinTai produces the complete set of bulldozer and excavator spare parts, including track chain, track shoe, track roller, carrier roller, idler, sprocket, recoil spring, bucket tooth/adapter, blade, etc. Our products are suitable for , KOMATSU, HITACHI, DAEWOO, and other world-famous construction machinery brands. Relying on the 35-year manufacturing experience of QiXing Enterprise, our products have won a good reputation all over the world by our high quality and good services.

Innovation for development, by the good faith to beat the market, increasing investment in science and technology. In order to ensure excellent product quality and competitive advantage in price, YinTai Machinery keeps innovating and improving its quality from raw materials to production, technology and management. Our products are the favorites to Chinese customers and sell all around the world which is deeply favored by the majority of customers.