131902020057A002 Guide wheel assembly Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

131902020057A002 Guide wheel assembly Sany SY1350C1C3KH Tracked hydraulic excavator spare parts

The 131902020057A002 idler wheel assembly (excluding bracket) is a core chassis walking component for tracked equipment such as excavators and rotary drilling rigs. It adopts a bracketless, integrated structure, and works with a tensioning mechanism to correct the track’s running trajectory, guide the track chain to operate smoothly, tighten track allowance, buffer walking impacts, reduce track looseness and sway, and improve the equipment’s walking stability when traveling straight, turning, and climbing.
This product is made of high-strength alloy cast steel in one piece, and is hardened by quenching. The wheel surface is hard, resistant to crushing, impact, and deformation. It is equipped with a high-precision floating oil seal to prevent mud, water, and sand from entering, and to prevent axle corrosion and oil leakage. Under heavy load conditions, old idler wheels are prone to wear and loss of roundness, oil leakage, jamming, and eccentric deformation, leading to track misalignment, chain slippage, abnormal noise, chassis vibration, and uneven wear of the track links. This product features original factory precision machining with accurate dimensions and high coaxiality, allowing for non-destructive replacement of old parts. It is suitable for routine maintenance and bulk stocking, stabilizing chassis performance and reducing maintenance costs.

【Core Technical Parameters】

— Product Model: 131902020057A002
— Product Name: Idler Wheel Assembly (excluding bracket)
— Product Type: Original equipment manufacturer (OEM) four-wheel and one-track systems for construction machinery, track guidance systems, tensioned and stabilizing chain assemblies
— Compatible Models: Compatible with corresponding tracked construction machinery, original factory parameters matched, and can be replaced without damage.
— Main body material: High-strength alloy cast steel, integrally quenched and hardened, wear-resistant, pressure-resistant, and not easily deformed.
— Operating conditions: Suitable for wide temperature ranges from -45℃ to +125℃, stable operation without jamming at both high and low temperatures.
— Structural design: Bracketless one-piece wheel body, high coaxiality, smooth operation, and even force distribution.
— Protective performance: Precision floating seal, preventing mud and sand ingress, oil leakage and rust, and shaft jamming.
— Surface treatment: quenching and hardening + anti-corrosion spraying, wear-resistant, anti-aging, and not easy to rust.
— Operating characteristics: Guides track trajectory, tensions track links, absorbs shocks, and stabilizes walking posture.
— Dimensional accuracy: Original factory 1:1 mold, precise wheel diameter and axle positioning, and perfect assembly fit.
— Installation method: Direct installation in the original location, no modification required, easy to install and disassemble, and efficient maintenance.
— Working condition adaptability: Suitable for heavy-duty working conditions in mining and earthmoving, impact resistant and fatigue wear resistant
— Service life: The hardened wheel surface is wear-resistant and durable, with stable sealing performance, and is not prone to failure during long-term operation.

The 131902020057A002 idler wheel assembly (excluding bracket) boasts robust original factory craftsmanship, precise guidance, and stable operation, making it suitable for various tracked construction machinery. It effectively solves problems such as idler wheel wear-induced roundness, oil leaks, jamming, and track deviation, corrects track running posture, and eliminates faults such as misalignment, chain slippage, abnormal noise, chassis vibration, and uneven track wear. It balances the load on all four wheels and extends the life of chassis components, reducing equipment maintenance and downtime costs. It is a high-quality original track component for equipment overhauls, fault replacements, and bulk purchases.

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