+86-592-5377617 WHATSAPP 18150358809 
Current Location : HomePage > PRODUCTS

Top Roller / Upper Roller

    Top roller shell: 
    •surface quenching HRC 54-60 
    •face hardening depth(bulldozer 5-7mm,excavator 4-5mm) 
    •Corner hardening depthmore than 1.5mm

Top Roller is used to support the track upwards, and make the track keep a good tensity. 

Best selected sealing and lifelong lubrication design enable our top roller to have longer working life and perfect performance. 

The machining process of our Top Roller: Forging — Rough Turning — Heat Treatment — Finish Turning — Assembly — Spraying Paint 

Heat Treatment Technical Data for BBY Top Roller: 
Top roller shell: 
• surface quenching HRC 54-60 
• face hardening depth(bulldozer 5-7mm,excavator 4-5mm) 
• Corner hardening depth more than 1.5mm
previous item: Cylinder next item: Sprocket / Segment