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Doosan DH300 30T Excavator Top Roller Carrier Roller Excavator Parts
Doosan DH300 30T Excavator Top Roller Carrier Roller Excavator Parts
Specifications
Brand Name :
CCJT
Certification :
ISO.CE
Place of Origin :
Fu Jian China
MOQ :
5 PCS
Payment Terms :
T/T,L/C
Supply Ability :
12000 sets/month
Delivery Time :
5-8 work days
Packaging Details :
Standard Export Strong Paper Box, Wooden Pallet
Model Number :
DH300
Condition :
100% Brand-new
Marketing Type :
Hot Product 2022
Dimension :
Standard
Terms Of Payment :
30% Downpayment,70% Before Shipment
Type :
Single Flange/Double Flange
Heat Treatment :
Quenching And Tempering
Price :
￥80-450
Description
Factory Price DH300 Lug-Pattern Excavator Top Roller Carrier Roller for 30-Ton Doosan DH300-Series
Product Specifications
Attribute Value
Condition 100% Brand-new
Marketing Type Hot Product 2025
Dimension Standard
Terms Of Payment 30% Downpayment, 70% Before Shipment
Type Single Flange/Double Flange
Heat Treatment Quenching And Tempering
Product Description

The DH300 Top Roller is Kubota's compact powerhouse component designed for excavators in demanding Australian projects. This precision-engineered bottom roller ensures durability, excellent load-bearing capacity, and smooth operation in compact construction machinery.The ​​DH300 top roller​​ is a key wear part in the undercarriage system of DH300-series mini excavators (e.g., Daewoo DH300, DH300LC-7). Its primary function is to support the upper run of the rubber track, reducing friction between the track and excavator frame while ensuring smooth, consistent movement during operation. As a load-bearing component, it withstands repeated vertical and horizontal forces from the track, making durability and precision critical to preventing track slippage, uneven wear, and costly downtime.

Manufacturing Process & Materials

Our production involves rigorous quality-controlled processes:

  • High-grade Material Selection: Components are crafted from premium materials for maximum durability
  • Outer Race/Shell: High-carbon chromium bearing steel (SUJ2) for superior hardness and wear resistance
  • Inner Roller/Spindle: Alloy steel (SCM440) engineered to withstand significant radial and axial loads
  • Seals & Lubrication: Nitrile rubber (NBR) seals for oil resistance with lithium-based grease for long-term lubrication
  • Quality Assurance: All materials undergo thorough inspection for chemical composition and mechanical properties using spectrometers and hardness testers

Doosan DH300 30T Excavator Top Roller Carrier Roller Excavator Parts


Top Roller, Excavator Top Roller, Bottom Roller DH300, Bottom Roller
Frequently Asked Questions
Q: Are you a trading company or manufacturer?

A: We have over ten years of export experience and operate our own bushing factory. CCJT specializes in multiple resource integration with strong quality assurance and excellent service.

Q: What is your delivery time?

A: Typically 5-8 days after order confirmation, depending on quantity.

Q: Do you provide samples?

A: Standard product samples are free; customers cover shipping costs which are refundable with order placement.

Q: How do you ensure quality?

A: We manufacture to confirmed specifications with strict quality control, including production inspections and final pre-shipment checks.

Q: Do you accept small orders?

A: We welcome all customers regardless of order size and are committed to mutual growth.

Contact Information

WhatsApp: +86 15859569569

WeChat: +86 15159760767

Email: jackie@qzcjt.com

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Doosan DH300 30T Excavator Top Roller Carrier Roller Excavator Parts

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Product Detail
Brand Name :
CCJT
Certification :
ISO.CE
Place of Origin :
Fu Jian China
MOQ :
5 PCS
Payment Terms :
T/T,L/C
Supply Ability :
12000 sets/month
Contact Supplier
Doosan DH300 30T Excavator Top Roller Carrier Roller Excavator Parts

Quanzhou Jintai Machinery Co., Ltd.,

Verified Supplier
1 Years
fujian
Since 2004
Business Type :
Manufacturer, Importer, Exporter, Other
Main Products :
Mini Track Roller, Track Roller, Top Roller
Total Annual :
20000000-25000000
Employee Number :
50~100
Certification Level :
Verified Supplier
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