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D155 track roller bottom lower roller spare parts model D155-3 D155AX-3 no. bulldozer KM2265 KM2266 17A-30-00070 17A-30-00080

D155 track roller bottom lower roller spare parts model D155-3 D155AX-3 no. bulldozer KM2265 KM2266 17A-30-00070 17A-30-00080

Short Description:

Our Track Roller is welded before precision machining in vertical CNC turning lathe and hence,there is no concentricity errors.The process gives unparalleled quality quality advantage over that of precision machning before welding.Therefore,the operation of roller is be guaranteed against occurrence of rapid wearing problems,which significantly improves service life of the products.

Product Detail

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Product Description

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Top Roller :forging material(50MN) Cover material (QT450)Shaft (45#)

Degree of depth :3mm(Shaft1.5-2mm)Hardness:HRC55-60

Roller body: Forging--Turning operation--Quenching--Fine Turing operation --pressure bushing--- welding slag shovel (clean up the body surface)

Shaft forging turning operation drill tapping tapping temper quenching mill right

Handed screw

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End cover :forging/casting/steel rod-rough and fine turning operation drill tapping

All parts ready to: assembly-Pressure Test Filling Oil Spray Paint Checking Storage

Material 40Mn2
Finish Smooth
Technique Casting/Forging
Surface Hardness  HRC55-60 , Depth:4mm-10mm
Colors Black or Yellow
Warranty Time 1440 Working Hours
Certification  ISO9001:2008
MOQ 2 Pieces 
FOB Price FOB Xiamen US$ 25-100/Piece
Delivery Time Within 30 days after contract established
OEM/ODM Acceptable


Applicable Industries:Construction works 

Place of Origin:Fujian, China      

Brand Name: MZ

After-sales Service Provided:Video technical support, Online support Application:Crawler Excavator Name:Excavator

Model:D155-3 D155AX-3

We have our own processing plant, forging plant and professional assembly line. From raw materials to forging, to product inspection, our factory is doing it, ensuring the best quality and quality, we are your best choice

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Packaging & Shipping

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Exhibitions over the years

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About US

Fujian Jinjia Machinery Co.,Ltd. is developing from Quanzhou Hongda Machinery Co.,Ltd. The company has dedicated to the manufacturing of crawler undercarriage parts since 1990, which has been more than 30years so far. Now we have established our own casting, forging and machining production centers.

JINJIA Machinery has always been insisting on the operation policy of “Customer first, Quality first” . Our mission is to make customer satisfaction. Just because of this, these years the company has obtained high reputations and solid foundation in the machinery industry. Today our production scales have been constantly expanding, with a wide range of product categories. Our products have been popular in domestic markets as well as the international markets such as Europe, America, South East of Asia, Middle East, etc. We have established good business relationships with famous companies around the world. Welcome to visit our factory for further more technological communications!

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1.Can I visit your factory on-site?

Of course, no problem. Welcome to our factory for on-site inspection. We will warmly welcome guests from afar and hope to play a role in our long-term cooperation.

2.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.

3.Product usage?

If any problem about usage, I will solve at first time.

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