E312 TOP ROLLER PART NO.:417345
Product Overview
Part Number: 417345
Fit Machine: Caterpillar E312 Medium Excavator
This carrier roller (top roller) is a heavy-duty aftermarket replacement undercarriage wear part designed for CAT E312 crawler excavators. Forged from high-strength alloy steel with full-surface deep carburizing quenching heat treatment, it is equipped with a double-layer anti-leak oil seal system. The roller supports the weight of the upper track chain, lowering track vibration, abrasion and derailment for municipal projects, farm renovation and small quarry construction jobs.
Core Advantages
Precision Machined Replacement Installation Dimensions
Roller diameter, spindle length and mounting hole sizes are precisely machined to fit Caterpillar E312 excavators seamlessly. Direct bolt-on installation is available without cutting or any modification.
Deep Hardened Roller Body Surface
Carburizing heat treatment creates high surface hardness and superior wear resistance, extending service life significantly on muddy and rocky small construction sites.
Double Anti-Mud Oil Seal System
High-temperature resistant composite rubber seals block mud, sediment and water ingress, effectively prevent grease leakage and lengthen maintenance intervals.
Compact Heavy-Duty Internal Bearing
Delivers smooth stable rotation and powerful load-bearing capacity to avoid track jumping and track chain detachment during daily light-to-medium load operations.
Strict Factory Quality Inspection
Each top roller undergoes hardness testing, leak testing and dimensional calibration before packaging to guarantee consistent uniform quality.
Compatible Equipment
This aftermarket replacement top roller fits Caterpillar E312 crawler excavator perfectly.
If you cannot confirm compatibility, send your machine model and photos of your old top roller to our sales team for fast professional matching.
Application
Replacement upper track carrier roller for CAT E312 medium excavators, widely used in landscaping, small road construction, farm land leveling and residential renovation small machinery chassis systems.
Packing & Shipping
Adopt shockproof export wooden cases and fumigated wooden pallets for outer packaging.
We support bulk wholesale orders, mixed full-set undercarriage spare parts orders, fast production lead time and global door-to-door delivery service.
Why Choose MUYE Aftermarket Undercarriage Parts
MUYE Machinery has specialized in aftermarket mini & heavy excavator chassis spare parts for over 10 years:
- Complete product lineup including top rollers, track rollers, idlers, sprockets and track shoes compatible with Caterpillar, Komatsu, Hitachi, Kubota, Kobelco and more brands
- Direct factory supply with competitive wholesale prices, no extra markup from middlemen
- All aftermarket undercarriage wear parts are covered by a 12-month quality warranty
- Professional technical team provides accurate model matching and installation guidance
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