Komatsu 21N3000110 PC1250 Track Front Idler Assembly/Heavy duty excavator undercarriage components manufacture and supplier in Quanzhou China
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Product Specifications
The Komatsu 21N-30-00110 is a Track Idler Wheel Assembly, also known as a Front Idler or Guide Wheel, designed for the Komatsu PC1250 hydraulic excavator. This assembly is a cornerstone of the machine's undercarriage system, responsible for guiding the track chain, maintaining proper track tension, and supporting the excavator's immense weight during operation. Engineered to withstand the extreme shock loads and abrasive conditions of mining, quarrying, and heavy construction sites, this idler wheel is critical for ensuring optimal machine stability, mobility, and overall undercarriage health.
Technical Specifications & Part Data
Komatsu Part Number: 21N-30-00110
Application: Komatsu PC1250 Series Hydraulic Excavators (Compatibility must be confirmed with the machine's serial number).
Component Type: Track Idler Wheel (Front Idler) Assembly.
Core Function:
Track Guidance: Directs the track chain smoothly around the front of the track frame.
Tension Maintenance: Acts as the adjustable component for achieving correct track shoe tension.
Load Distribution: Works in tandem with rollers and carriers to support the machine's weight on the ground.
Key Features:
Robust Material: Fabricated from high-carbon, high-strength alloy steel.
Advanced Heat Treatment: The running surface is induction hardened to a significant depth, providing superior resistance to wear and abrasion, while the core remains tough to absorb impact loads.
Precision Machining: CNC-machined for perfect concentricity and a smooth track chain interface, reducing vibration and premature wear on both the idler and the track links.
Integrated Sealing System: Utilizes robust floating face seals (e.g., Duo-Cone type seals) to effectively retain grease and exclude contaminants like dirt, mud, and moisture, ensuring long-lasting bushing and shaft life .
Komatsu PC1250 Idler Wheel: Design & Engineering Excellence
Our Komatsu Idler Wheel Assembly is built to exceed the demanding specifications of original equipment. The design process focuses on:
Structural Integrity: The housing and flange are engineered to resist bending and deformation under high loads.
Optimized Bearing & Bushing System: The internal bushing and shaft are precision-matched to provide maximum surface contact, reducing point loads and extending service life.
Corrosion Protection: A specialized surface treatment or paint is applied to protect against rust and corrosion in harsh environmental conditions .
Why Choose This Komatsu PC1250 Track Idler?
Proven Compatibility: Guaranteed fit and performance for your Komatsu PC1250 excavator.
Extended Service Life: Superior materials and heat treatment directly translate to longer intervals between undercarriage replacements, reducing your total cost of ownership.
Enhanced Machine Performance: A true-running idler wheel ensures smooth track operation, reduces power loss, and minimizes stress on the final drive and other undercarriage components.
Rigorous Quality Control: Every assembly undergoes stringent dimensional checks and performance validation to ensure it meets or exceeds OEM standards for quality and durability .
Inspect Related Components: When replacing a major component like an idler, it's a good time to inspect .DPW Parts also manufactures komatsu PC1250 Undercarriage spare parts aftermarket:
PC1250 Track group 48Link track shoes 700mm 21N-32-02001
PC1250 Track chain 48Links P/N BERCO KM2346/48 21N-32-00101
PC1250 Track shoes Width 700MM P/N BERCO KM2117/700 21N-32-31110
PC1250 Top Rollers P/N 21N-30-00160 21N-30-00161 upper rollers BERCO KM2419 KM2506 21N-30-00130 PC1250 carrier rollers
PC1250 Track bolts in stock P/N 21N-32-31211 and nuts P/N 198-32-31220 Hardware – 21N3231211 21N3231211 TRACK BOLT 33MM X 102MM VPI V21N-32-31210
PC1250 Track nuts 198-32-31220 Hardware 1983231220 1 NUT TRACK 33MM DOME DESIGN
PC1250 Front Idlers P/N BERCO KM2420 21N-27-31191 VKM2420V 21N-30-00110
PC1250 Sprocket P/N BERCO KM2248 KM2508 21N-30-00110 VKM2508V 21N-27-31191
PC1250 Track Spring of Idlers 21N-30-34151
PC1250SP-8 Boom replacement China
PC1250SP-8 arm replacement China
PC1250SP-8 bucket 6.7CBM New China
PC1250 Rock bucket replacement China
01011-83070 PC1250 track rollers bolts
01643-33080 PC1250 track rollers Washer
01010-82065 PC1250 Carrier Roller Ass’y Bolt
01643-32060 PC1250 Carrier Roller Ass’y Washer
01010-82475 PC1250 Teeth Sproket Bolt
01643-32460 PC1250 Teeth Sproket Washer
PC1250 boom cylinder 707-01-xz501 707-01-0J450
PC1250 boom cylinder 707-01-xz511
PC1250 bucket cylinders 407-01-xr720 / 407-01-xr721 707-01-0L550
PC1250 arm cylinder 707-01-XMC00 arm cylinder
PC1250 Guard 21N-30-32240
PC1250 Bolt 01010-83070
PC1250 Bolt 01010-82475
PC1250 GUARD-ROLLER 21N-30-32251 21N-30-32261 21N-30-32271 21N-30-32281
PC1250 Spring 21N-30-34151
PC1250 Yoke 21N-30-37610 21N-30-37620
PC1250 BUCKET, SIDE SHROUD 427-70-13611
PC1250 Komatsu Adapter 21N-70-37711 new aftermarket tractor parts
PC1250 Adapter,Welded 21N-70-41241
PC1250 Adapter 90XS115C AME90SSS
PC1250 Adapter 21N-70-37711 Adapter Welded HL350XS115″, “350XS115
PC1250 SHROUD (WELDED) 3000906HX HK1743-1 21N-939-4891
PC1250 PC1100 PIN 21N-72-11152 XS21N7211152
PC1250 BUSHING XS7077616030 707-76-16030
Optimized FAQ Section
Q1: What is the specific application of part number 21N-30-00110?
A1: The Komatsu 21N-30-00110 is a Track Idler Wheel Assembly specifically designed for the Komatsu PC1250 hydraulic excavator. It is essential to verify compatibility using your machine's serial number.
Q2: How does a high-quality idler wheel assembly impact my excavator's performance?
A2: A premium idler wheel like the 21N-30-00110 ensures smooth track movement, proper alignment, and effective tensioning. This leads to reduced vibration, lower operating costs, decreased risk of track derailment, and prolonged life for the entire undercarriage system.
Q3: Are there aftermarket alternatives to the OEM Komatsu idler wheel?
A3: Yes, high-quality aftermarket alternatives are available. These replacements are manufactured to strict tolerances using advanced metallurgy, often providing a superior cost-to-performance ratio while maintaining reliability and durability comparable to OEM parts .
Q4: What maintenance is required for the track idler assembly?
A4: Regular inspection for abnormal wear, flange damage, and oil leakage from the seals is crucial. Maintaining proper track tension is the single most important factor in extending the idler's lifespan, as both over-tightening and excessive looseness cause accelerated wear.
DPW Parts'Komatsu 21N-30-00110 PC1250 Track Idler Wheel Assembly is more than just a spare part; it is a vital investment in the productivity and longevity of your heavy equipment. By choosing this engineered component, you are selecting uncompromising quality, durability, and performance that will keep your Komatsu PC1250 operating reliably in the most challenging conditions. Ensure your machine's undercarriage is equipped with the best—ensure it's equipped with our idler wheel assembly.
