Case-CX360 Carrier Roller/Upper Roller Assembly-OEM quality excavator undercarriage parts manufacture&supplier

The Carrier Roller Assembly for a Case CX360 excavator is a critical component within the machine’s undercarriage system. Its primary function is to support the upper section of the track chain as it travels along the track frame, maintaining proper track tension and alignment while distributing the machine’s weight.

Here’s a breakdown of key information about the (VC4143A0)CX360 Carrier Roller Assembly:

1. Function:
   • Support: Prevents the upper run of the track from sagging excessively.
   • Alignment: Helps guide the track chain smoothly along the track frame.
   • Load Distribution: Shares the load with other undercarriage components (idlers, sprockets, track rollers).
   • Reduce Friction & Wear: Minimizes friction between the track chain link and the track frame.
2. Location:
   • Mounted vertically along the top flange of the track frame.
   • Positioned between the front idler and the sprocket, and above the track rollers (bottom rollers).
   • A CX360 typically has 2 or 3 carrier rollers per side, depending on the specific configuration and serial number range.
3. Components of the Assembly:
   • Carrier Roller Body: The main housing containing the bearings and seals. This is the part you see from the outside.
   • Shaft: The central axle on which the roller rotates.
   • Bearings (Usually Tapered Roller Bearings): Allow smooth rotation of the roller around the shaft.
   • Seals (Main & Flange Seals): Critical for keeping lubricating grease in and dirt, water, and abrasives out. Failure is the primary cause of roller demise.
   • Flange: The wider part that bolts directly to the track frame.
   • Bolts & Nuts: Secure the assembly to the track frame.
   • Grease Fitting (Zerk): Allows for periodic greasing of the internal bearings (though many modern sealed rollers are “lubed-for-life” from the factory).
4. Reasons for Replacement:
   • Normal Wear: Gradual wearing down of the roller surface and internal components over time/usage.
   • Seal Failure: Leading to contamination (dirt, mud, water) entering the bearings, causing rapid wear and seizure.
   • Bearing Failure: Results in noisy operation (grinding, squealing), stiff rotation, or complete lock-up.
   • Physical Damage: Impact damage from rocks or debris, bending the shaft or damaging the body.
   • Flange Damage: Cracks or wear on the mounting flange.
5. Signs of a Failing Carrier Roller:
   • Visible wobble or misalignment of the roller.
   • Excessive play when trying to move the roller by hand.
   • Grinding, squealing, or rumbling noises coming from the undercarriage during travel.
   • The roller is seized and won’t turn.
   • Visible grease leakage (indicating seal failure).
   • Visible cracks or damage to the roller body or flange.
   • Abnormal track sag or misalignment.

1. Replacement Considerations:
   • Genuine (OEM) vs. Aftermarket: Case (CNH) offers genuine parts, known for quality and exact fit. Numerous reputable aftermarket manufacturers (Berco, ITR, Prowler, Vema Track, etc.) also produce high-quality, often more cost-effective alternatives. Lower-tier aftermarket options exist but vary significantly in quality and lifespan.
   • Part Number Identification: Crucially, the exact part number depends heavily on the specific CX360 serial number. Case has made multiple versions of the CX360 over the years with different undercarriage specs. Always locate the machine’s serial number plate.
   • Where to Find the Part Number:
     • Case Construction Equipment Dealer Parts Dept: Provide your machine serial number.
     • Online Parts Catalogs: Websites like www.cqctrack.com allow you to search by model and serial number.
     • Aftermarket Supplier Catalogs: Reputable suppliers will also ask for the serial number to ensure the correct roller is provided.
     • Old Roller: The part number is often stamped or etched onto the roller body or flange.
   • Installation: Requires proper lifting/support of the machine, track removal (or significant loosening), and significant torque on mounting bolts. Follow service manual procedures precisely. Safety is paramount – block the machine securely and relieve hydraulic pressure.
   • Replace in Pairs/Sets: It’s highly recommended to replace all carrier rollers on one side (or ideally both sides) at the same time, especially if they show similar wear. Mixing old and new rollers can cause uneven track wear and stress.

In summary: The Carrier Roller Assembly on your Case CX360 is a vital wear component in the undercarriage. Identifying the correct replacement requires knowing your machine’s specific serial number. Choose between genuine OEM or quality aftermarket based on your budget and operational needs, and prioritize timely replacement to protect your investment in the entire undercarriage system. Always consult the service manual or a qualified technician for replacement procedures.