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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":"CAT 120B Top Roller OEM Direct Replacement Heat Treated and Coated with CNC","imgUrl":"https:\/\/img.chinax.com\/nimg\/94\/4a\/c06ac189ccbbd63fe2fbff106522-200x200-1\/cat_120b_top_roller_oem_direct_replacement_heat_treated_and_coated_with_cnc_ultra_precision_machining_for_excavators.jpg","attrs":{"Brand Name":"ZTMC","Model Number":"CAT120B\/E120B","Certification":"ISO9001","Place of Origin":"CHINA"}}
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PC60-5 PC60-6 PC60-7 Top Roller OEM Replacement 203-30-00150
PC60-5 PC60-6 PC60-7 Top Roller | OEM Replacement, Part No.203-30-00150
This heavy-duty carrier top roller is a 1:1 OEM direct replacement for PC60-5, PC60-6 and PC60-7 mini excavators, with standard OEM part number 203-30-00150. 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 reduces undercarriage maintenance failures for long-working mini excavator fleets.
Item
Specification
OEM Part Number
203-30-00150
Applicable Excavator Model
PC60-5 / PC60-6 / PC60-7
Machining Tolerance
±0.01mm CNC ultra-precision machining
Heat Treatment Process
Overall quenching + stress relief tempering
Applicable Working Scenarios
Muddy construction site, gravel road repair, municipal landscaping, farmland renovation, narrow working sites
Installation Type
Plug-and-play OEM direct replacement
Applicable Working Environments
PC60 series mini excavators are widely used in municipal landscaping, indoor demolition, road maintenance and small earthmoving projects. Frequent steering, muddy water immersion and continuous gravel friction bring great pressure to undercarriage rollers. This customized top roller is designed for mini excavator frequent start-stop and narrow-site working features, adapting to all kinds of complex low-to-medium load working conditions and maintaining stable long-term operation.
Core Production & Heat Treatment Process
Adopt high-strength one-piece forging steel blank to fit mini excavator compact structure and frequent impact. Dual standard heat treatment is adopted: integral quenching improves surface hardness to resist daily gravel and sediment abrasion; tempering eliminates internal metal residual stress to prevent roller shell cracking during frequent steering impact. All mounting surfaces and shaft holes are processed by precision CNC lathe, with tolerance strictly controlled within 0.01mm, fully consistent with original factory assembly 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
Universal fit for 3 mainstream PC60 series models, one part covers multiple machine fleets
High-precision size matching eliminates track deviation and walking vibration
Heavy-duty floating seal structure isolates muddy water and dust, maintaining stable sealing performance all the time
Complete heat treatment prolongs service life and reduces frequent replacement cost
Direct bolt-on installation saves maintenance time and labor cost
Customer Application Case
A Southeast Asian equipment rental company owns 20+ units of PC60-5/6/7 mini excavators. After upgrading to our OEM-standard top rollers, all parts run stably over 1800 working hours with steady sealing and intact roller shell, cutting overall undercarriage maintenance cost by 33% yearly.
Frequently Asked Questions
Q1: Can this top roller fit PC60-5, PC60-6 and PC60-7 universally?
A: Yes, OEM part number 203-30-00150 is compatible with all three models, 100% same mounting size, no extra adjustment needed.
Q2: Why do mini excavator top rollers need higher impact resistance?
A: Mini excavators work with frequent steering and impact. Our complete dual heat treatment improves overall structural toughness, matching long-cycle daily operation demands perfectly.
Q3: Can you provide batch inspection reports for bulk orders?
A: Yes, we can provide heat treatment hardness reports and dimensional inspection reports to support customer bulk order customs clearance and quality check.
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...
