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{"title":"Doosan DX200A DX200LC OEM Replacement Top Roller with 50Mn Wheel Body and CNC","imgUrl":"https:\/\/img.chinax.com\/nimg\/10\/1d\/4cd35a2e5d968553a66d65dc21b0-200x200-1\/doosan_dx200a_dx200lc_oem_replacement_top_roller_with_50mn_wheel_body_and_cnc_precision_processing.jpg","attrs":{"Brand Name":"ZTMC","Model Number":"DX200A\/DX200LC","Certification":"ISO9001","Place of Origin":"CHINA"}}
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{"title":"CAT311 OEM Direct Replacement Top Roller with Heat Treatment HRC 52-58 and CNC","imgUrl":"https:\/\/img.chinax.com\/nimg\/70\/ce\/5e8858073240c616404e5d2b0d36-200x200-1\/cat311_oem_direct_replacement_top_roller_with_heat_treatment_hrc_52_58_and_cnc_ultra_precision_machining_for_excavator_undercarria.jpg","attrs":{"Brand Name":"ZTMC","Model Number":"CAT 311 \/ 311B \/ 311C","Certification":"ISO9001","Place of Origin":"CHINA"}}
This heavy-duty carrier top roller is a 1:1 OEM direct replacement for PC200-7 excavator, with standard OEM part number 207-30-00150. Perfectly matching original mounting dimensions and bolt holes, it requires no cutting, drilling or any on-site modification. It effectively supports track operation, avoids track sagging and vibration, and optimizes undercarriage running performance for long-working excavator fleets.
Specification
Item
Specification
OEM Part Number
207-30-00150
Applicable Excavator Model
PC200-7
Machining Tolerance
±0.01mm CNC ultra-precision machining
Heat Treatment Process
Overall quenching + stress relief tempering
Applicable Working Scenarios
Muddy construction site, gravel quarry, road renovation, rough earthmoving terrain
Installation Type
Plug-and-play OEM direct replacement
Applicable Working Environments
PC200-7 excavators are widely used in medium and large earthmoving projects, quarry exploitation, municipal road reconstruction and muddy job sites. Long-term gravel friction, muddy water erosion and continuous walking load bring heavy pressure to undercarriage parts. This top roller is professionally manufactured to adapt to various harsh working conditions and maintain stable long-term operation.
Core Production & Heat Treatment Process
Adopt high-strength one-piece forging steel blank to enhance overall structural stability and impact resistance. Dual standard heat treatment is adopted: integral quenching improves surface hardness for long-term abrasion resistance; tempering eliminates internal metal residual stress to keep complete structural toughness. All mounting holes and matching surfaces are processed by high-precision CNC equipment, with machining tolerance strictly controlled within 0.01mm, fully fitting original factory installation standards.
On-site Installation Steps
Raise the excavator track with a hydraulic jack to separate track from ground and release partial track tension
Remove fixing bolts of the old top roller, take out damaged roller and clean dust and sediment on the mounting base
Place the new top roller in original position, align reserved bolt holes accurately
Lock all fixing bolts with standard torque, reset track tension and conduct track idle running test
Check no abnormal vibration or friction noise to complete installation
Product Advantages
Accurate OEM size matching stabilizes track running and reduces walking vibration
Reinforced floating seal structure isolates external dust and muddy water steadily
Complete dual heat treatment improves overall durability and extends service cycle
High structural strength adapts to heavy-load operation in various construction sites
Direct bolt-on installation saves on-site maintenance time and labor cost
Customer Application Case
A Southeast Asian engineering fleet operates multiple PC200-7 excavators. After equipped with our OEM-spec top rollers, all undercarriage parts keep stable operation over 1800 working hours with good sealing performance and intact roller shell, cutting annual undercarriage maintenance expenditure by 33%.
Frequently Asked Questions
Q1: Does this top roller fit PC200-7 excavator?
A: Yes, OEM part number 207-30-00150 matches the model perfectly with unified installation size, no extra adjustment or hole modification required.
Q2: What are the advantages of our products over ordinary aftermarket rollers?
A: Our products adopt complete dual heat treatment and 0.01mm high-precision machining, delivering better abrasion resistance and structural stability for long-term heavy-duty work.
Q3: Can you provide batch quality inspection reports for bulk orders?
A: Yes, we can provide professional heat treatment reports and dimensional inspection reports to support customer quality inspection and customs clearance.
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Exporter
Year Established:
2015
Total Annual:
5000000-8000000
Employee Number:
100~120
Ecer Certification：
Verified Supplier
Nanan Zhongte Construction Machinery Factory is located in Quanzhou, Fujian Province, China — a city recognized by UNESCO as the starting point of the ancient Maritime Silk Road and also a vibrant metropolis with an economic output exceeding one trillion yuan. As a large enterprise specializin... Nanan Zhongte Construction Machinery Factory is located in Quanzhou, Fujian Province, China — a city recognized by UNESCO as the starting point of the ancient Maritime Silk Road and also a vibrant metropolis with an economic output exceeding one trillion yuan. As a large enterprise specializin...
