146-6064 Carrier Roller Assembly

PRODUCT DETAILS

This carrier roller is an aftermarket replacement for the upper track support of multiple mini excavators. Designed specifically for track guidance and tension maintenance.

I. Core Compatible Models
This carrier roller assembly is guaranteed to fit the following models precisely:
Caterpillar: 302.5, 302.5C, 303.5
Mitsubishi: MM35

II. Serial Number Requirement
Known to fit serial numbers starting from 4AZ1- and above. Please verify your equipment’s serial number before ordering to ensure compatibility.

III. Functional Role and Installation Details
Core Function: As an upper carrier roller, it supports the top section of the track, preventing sagging into the track frame during operation. Maintains track tension and stability, reducing abnormal track wear.
Installation Specifications:
One roller is required per side for the specified Caterpillar models.
Mounted at the center-top of the undercarriage, directly bearing the weight of the upper track. Critical component for track system integrity.

IV. Critical Ordering Note
Carrier roller specifications vary by model. Please confirm your exact equipment model to ensure proper fitment. Mismatched parts may cause installation issues.

V. Alternate Part Number
Corresponding Caterpillar dealer part number: 146-6064

VI. Related Undercarriage Parts for Caterpillar 302.5C (One-Stop Procurement)
We also supply the following compatible parts for complete undercarriage repair:
Sprocket: 140-4022
Carrier Roller: 146-6064 (this product)
Idler: 234-6204
Bottom Roller: 266-8793
Rubber Track: 300×52.5×78 specification