High Strength Carrier Roller Upper Roller Excavator Spare Parts For
Doosan DX140W Construction Machinery Parts
OVERVIEW
Replace worn or failed upper rollers with this precision-engineered
carrier roller designed exclusively for the Doosan DX140W wheeled
excavator. Manufactured from forged, heat-treated 40Mn2 steel and
reinforced with lifetime-lubricated seals, this part delivers
maximum track stability and extended service life in the toughest
construction environments.
Product parameters
| Material | 50Mn/40Mn2 |
| Finish | Smooth |
| Colors | Black or yellow |
| Technique | Forging casting |
| Surface Hardness | HRC50-55 |
| Certification | ISO9001:2008ISO14001:2004GB/T28001:2001 |
| Type | Undercarriage parts track roller |
| MOQ | 100 piece |
| Delivery Time | Within 30 days after contract established |
FEATURES & BENEFITS
Extreme Durability: Forged alloy steel and deep-hardened tread resist bending,
cracking, and spalling under heavy dynamic loads.
Dust & Water Protection: Triple-lip floating seals prevent abrasive intrusion, minimizing
oil loss and downtime.
Precision Fit: CNC-machined mounting brackets ensure drop-in installation—no
field modifications required.
Extended Service Intervals: High-temperature grease maintains lubrication from –20 °C to 120
°C, cutting maintenance costs up to 30 %.
Field-Tested Reliability: Successfully validated on DX140W units operating 2,000+ hours in
quarry and road-building applications.
INSTALLATION & MAINTENANCE
Raise track frame and secure machine on approved stands.
Remove retaining bolts and slide out old roller.
Position new carrier roller; torque bolts to 280 N·m.
Rotate track by hand to verify smooth motion; check for leaks after
first 10 operating hours.
WARRANTY & SUPPORT
Backed by a 12-month unlimited-hour warranty. In-stock inventory
ships within 24 hours worldwide. Contact our parts specialists for
technical drawings, bulk pricing, or expedited delivery.
Detailed photos
