CATERPILLAR Construction Machinery Heavy Duty Undercarriage Spare Parts D50 Track Carrier Support Roller OEM Top Roller

1. What is a roller?

* The roller, which is an important part of the belt conveyor, has many kinds and large quantities, and can support the conveyor belt and the weight of the material. It accounts for 35% of the total cost of a belt conveyor, which produces more than 70% resistance, so the quality of the roller is particularly important. It has two kinds of steel and plastic.

* The materials available for Track roller and Carrier roller are 40Mn2, 40MnB, 50Mn depending on working conditions. The rollers are normalized with precision forging before overall heat treatment to achieve surface hardness of HRC52-56 and the depth of hardened layer reaches more than 7-10mm (HRC45). This ensures higher durability with high impact resistance and surface wear resistance on the contact surface of the rollers.

* High quality floating seals and lubricating system are used to adapt to different climate and temperature The track and carrier rollers is able to work under severe working conditions or climate ranging from -45℃~120℃, keeping the components free from maintenance.

2. Carrier Rollers Excavator Advantages / Features

• Our components undergo specialized quench-tempering processes, which guarantee excellent mechanical properties, high overall strength, and superior resistance to bending, breakage, and wear—ensuring they hold up under heavy-duty operational demands.

• With a surface hardness ranging from HRC 40–55, our products significantly reduce wear and extend service life. This enhanced durability not only boosts the value of your equipment but also supports your business goals by maximizing the long-term reliability of your products.

• Precision-engineered and carefully manufactured, our components ensure proper installation, easy grouser compatibility, and a heavy load capacity of up to 50 tons—all while maintaining the excavator’s smooth and reliable operation. Backed by consistent quality, excellent cost-effectiveness, and responsive service, our products stand as your best choice for long-term performance.

3. Main Dimensions of Installation

MAIN PARAMETERS

The Models Above Are Just For Reference, Many Models We Can't List Here. We Can Supply More Products As Your Requirement. Please Feel Free To Send Us Your Inquiry Or Email If You Have Any Requirements.

4. Why Choose Us?

* World-class quality

* Factory sale directly with reasonable price

* Flexible payment terms including T/T, L/C and so on

* Fast delivery within 30 days after contract established

* Professional sales team, quality inspection, and report, maritime logistics guidance

* After-sale service: video technical support, 24h online support

5. Hot Sale Products

6. FAQ

• You Are A Trader Or A Manufacture?

We Are An Industry And Trade Integration Business, Our Factory Loed In Quanzhou, And Our Sales Department Is In The Center Of Xiamen City.

• How Can I Be Sure The Part Will Fit My Excavator?

Give Us Correct Model Number/Machine Serial Number/ Any Numbers On The Parts Itself Or Measure The Parts Give Us Dimension Or Drawing.

• How About The Payment Terms?

We Usually Accept T/T Or L/C. Other Terms Also Could Be Negotiated.

• What Is Your Minimum Order?

It Depends On What You Are Buying. Normally, Our Minimum Order Is USD5000. One 20’ Full Container And LCL Container (Less Than A Container Load) Can Be Acceptable.

• What Is Your Delivery Time?

FOB Xiamen Or Any Chinese Port: 35-45 Days. If There Are Any Parts In Stock, Our Delivery Time Is Only 7-10 Days.

• What About Quality Control?

We Have A Perfect QC System For The Perfect Products. A Team Who Will Detect The Product Quality And Specifiion Piece Carefully, Monitoring Every Production Process Until Packing Is Complete, To Ensure Product Safety Into The Container.

7. Feedback

50Mn Steel Track Carrier Roller

40MnB Material Excavator Top Roller

Smooth Finish Undercarriage Support Roller

50Mn Steel Track Carrier Roller with 40MnB Material and Smooth Finish for Heavy Duty Excavator Undercarriage Images