Carrier Roller KOMATSU PC20 Undercarriage Upper Roller

Owing a lot to our professional staffs and advanced technologies and equipments, our carrier roller is better in the wear-resistance and has longer working lifetime.


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KOMATSU Carrier Roller Excavator Undercarriage Upper Roller for Sale


1. Structure and Main Dimensions of Installation


Top Roller Structure


2. Our Advantages



  • Advanced Germany KUKA automatic machining center, horizontal and vertical CNC machining ensure the accuracy of assembly dimensions. This is to maximize the life span of each component and minimize production cost.
  • Through quench-tempering processes to ensure excellent mechanical properties, high strength and superior wear resistance to bending and breakage.
  • Professional tempering and medium frequency quenching treatment ensures the sufficient hardness of the core and abrasion resistance of external surfaces.
  • Panasonic automatic welding robot from Japan makes sure we have steady and good welding quality.
  • The use of mechanical oil and environmental protection paint improves the ability to resist high and low temperature and extends the product’s working life under severe environment.
  • 35 years' experience in Excavator & Bulldozer spare parts manufacturing.


3. Main Dimensions of Installation


carrier roller drawings

Main Parameters

Brand Model Main Dimensions of Installation
A B D S M N G
 KOMATSU PC40 89 89 100 30
PC60-5/6 140 120 120 45 100 42 13.5
PC100 120 120 120 45 110 42 13.5
PC120-3 120 120 120 45 110 42 13.5
PC160 146 120 170 40 68 35 17.5
PC200-5 160 135 164 55
PC200-7 146 120 170 40 68 35 17.5
PC240LC-5 160 135 164 55
PC300-5/6 200 168 210 58
PC300-7 172 150 195 50 90 55 18

The models above are just for reference, we can't list all models here. We can supply more products as your requirements. Please feel free to send us your inquiry.


4. Main Materials


Main body 50Mn/40Mn2 Alloy steel Shaft 45# Alloy steel
Side cover 50Mn/40Mn2 Alloy steel Bi-metal sleeve CuPb10Sn10
Ring float Cr16Mo2NiCu Hexagon bolt JB/T1000-1977 OEM
O-ring High quality rubber Lubricated oil High quality 40#


5. Production Processes


Top roller producing


6. Hot Sale Products


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