Did the top roller of your on-site CAT mini excavator wear out? Don’t panic! Our 172-1764 Carrier Roller Assembly (Top Roller Assembly), custom-made for Caterpillar users, is now in stock. As a cost-effective aftermarket replacement part, it excels in both compatibility and durability. We’ll walk you through everything from model matching to procurement details to help you avoid maintenance pitfalls!
✅【Precise Compatibility + Clear Restrictions to Avoid Wrong Purchases】
▪️Full Compatibility with Models: Perfectly fits Caterpillar 304, CAT304.5, CAT305.5, 304CR, and 305CR – ideal for CAT mini excavators used in high-frequency scenarios like municipal construction, orchard trenching, and small-scale infrastructure projects. Install it, and your machine will resume stable operation instantly!
▪️Key Restrictions to Note: Not suitable for Caterpillar CCR series mini excavators, nor can it replace the upper carrier roller (TOP ROLLER) of this series. Before purchasing, feel free to leave your machine’s serial number, and we’ll double-check compatibility for you!
✅【Product Highlights: No Assembly + Durable, Saves Time & Cost】
▪️User-Friendly Fully Assembled Design: Comes with a complete shaft and is pre-assembled before delivery. No extra disassembly or assembly is needed upon receipt – even beginners can replace it quickly, saving at least 1 hour of installation time compared to split-type top rollers!
▪️Know the Installation Quantity in Advance: Each CAT mini excavator requires 2 carrier rollers (1 on the left and 1 on the right side of the machine). It’s recommended to replace them in pairs during maintenance to avoid uneven wear on the track caused by mismatched old and new top rollers. Repair shops and construction teams enjoy exclusive wholesale prices for bulk purchases – stock up for better value!
▪️Durability Hides in Materials: The shaft is made of high-strength alloy with anti-rust treatment, capable of withstanding muddy water immersion and gravel impact on construction sites. It reduces downtime caused by top roller failures during daily operations and extends machine availability.
✅【Core Parameters + Procurement Tips, No Mistakes in Details】
Before purchasing, be sure to verify the following parameters to ensure they match your original top roller exactly (mismatched parameters may cause track misalignment, abnormal noise, etc.):
▪️Body Width: 4 3/4 inches (approx. 120.65mm)
▪️Overall Length: 7 1/4 inches (approx. 184.15mm)
▪️Shaft Diameter: 1 1/8 inches (approx. 28.58mm)
▪️Body Diameter: 3 1/4 inches (approx. 82.55mm)
▪️Optional for Special Needs: If your machine requires a grooved-shaft top roller, choose part number 265-7675 (with a notched positioning design). Consult our technical team for specific compatibility!
✅【Flexible Part Number Choices, No Stock Worries】
▪️Main Part Number: 172-1764 (sufficient stock, ship immediately after order placement)
▪️Alternative Part Number: 10C0176AY3 (same code as Caterpillar dealer parts, fully consistent with 172-1764 in function and size – can be flexibly replaced if one part number is out of stock)
Whether you need emergency maintenance for a single machine or bulk spare parts for on-site stockpiling, this 172-1764 top roller is a reliable choice for CAT mini excavator users! Want to check if your equipment (e.g., 304CR/305CR) is compatible, or learn about stock in nearby warehouses and logistics timelines? Leave a message with your “machine model + needs” in the comments – we’ll reply instantly!
Post time: Sep-17-2025