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Sumitomo 75 / 80 & Case 75 Mini Excavator Front Idler
This high-performance front idler serves as a direct OEM replacement for Sumitomo 75, Sumitomo 80, and Case 75 mini excavators in demanding mining and heavy-duty applications.
Manufactured from premium 35MnB alloy steel using advanced roll forging technology, this idler delivers superior performance with denser internal structure, enhanced tensile strength, and exceptional wear resistance compared to conventional casting or basic forging methods. The combination of material and manufacturing process ensures outstanding impact resistance and deformation stability, making it ideal for challenging conditions including rock, gravel, and uneven terrain in mining operations.
Precision machined to exact OEM specifications, this front idler installs directly without modification, providing reliable track guidance and consistent undercarriage performance.
Technical Specifications
Applicable Models
Sumitomo 75, Sumitomo 80, Case 75 Mini Excavators
Material
35MnB Alloy Steel
Manufacturing Process
Roll Forging, Precision Machining, Quenching & Tempering
Surface Hardness
HRC 53-57
Hardened Layer Depth
8-12 mm
Tensile Strength
600-800 MPa
Replacement Type
OEM Direct Replacement
Quality Inspection
100% Pre-delivery Dimensional & Hardness Test
Frequently Asked Questions
Is this front idler compatible with Sumitomo 75/80 and Case 75?
Yes, it is dimensionally matched to OEM standards and can directly replace original parts.
What is the advantage of roll forged 35MnB?
Roll forging improves structure density and fatigue resistance; 35MnB ensures high hardness and wear performance, extending service life in mining applications.
Is it fully inspected before shipment?
Each unit undergoes dimensional inspection, hardness testing and appearance check to ensure reliability.
Can it be used in mining conditions?
Yes, it is specially designed for mining, quarry, earthmoving and other heavy-duty small excavator scenarios.
Packaging & Transportation
Packaging: Export-standard wooden pallet, moisture-proof, shock-proof and anti-collision
Transportation: Suitable for sea, land and air transportation to global destinations
Loading & Unloading: Pallet design is compatible with standard handling equipment for convenient operation
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...
