Source your crawler crane undercarriage parts straight from the manufacturer. Our LS218 Crawler Crane Idler is engineered as a direct aftermarket replacement for Sumitomo LS218 / Link-Belt LS-218H series lattice boom crawler cranes, delivering OEM-equivalent quality at factory-direct pricing. As a professional manufacturer of crawler crane undercarriage parts with 20+ years of experience, we supply the global market with low-maintenance, high-stability idler wheels built for the most demanding hoisting and heavy-lift applications.
Key Specifications:
- Part Number / Model: LS218 (compatible with Sumitomo LS218, Link-Belt LS-218H series crawler cranes)
- Type: Crawler crane front idler / guide wheel (box-type structure)
- Material: 35SiMn high-strength alloy steel — selected for superior impact resistance and durability
- Main Process: Resin sand casting → normalizing → rail induction quenching → tempering
- Surface Hardness: HRC 48–54 (rail induction quenched)
- Core Hardness: ≥ HRC 46 at 6 mm depth position — uniform hardened layer for extended wear life
- Load Capacity: 80-ton class crane application
- Configuration: One left idler + one right idler per set (2 idlers per crane)
- Weight: Approx. 60 kg per unit (packaged)
- Certification: ISO 9001:2000
- Warranty: 2,500 working hours or 1 year
- Monthly Production Capacity: 2,000 pcs/month
- Color: Black (custom colors available)
- HS Code: 8431499900
How the LS218 Idler Works:
The idler is a critical component of the crawler crane undercarriage. It guides the track chain to rotate correctly, ensures the crawler crane moves forward smoothly, and prevents track deviation and derailment . Together with track rollers and sprockets, it forms a stable undercarriage system that supports the full weight of an 80-ton class lattice boom crawler crane during travel and lifting operations.
Why Choose Our LS218 Idler?
💡 Casting + Induction Quenching Advantage: Unlike ordinary cast guide wheels, our LS218 idler undergoes rail induction quenching heat treatment, achieving HRC 48–54 surface hardness with ≥ HRC 46 at 6 mm depth. This deep, uniform hardened layer delivers 2× longer wear life than standard untreated cast idlers — fewer changeouts, less downtime.
- Factory-Direct Pricing: No middlemen, no dealer markup. You get OEM-level quality straight from our production line at a fraction of genuine Sumitomo / Link-Belt parts pricing .
- Precision Casting & Machining: Box-type structure manufactured via resin sand casting, then normalized for excellent impact resistance and good appearance quality. Every idler passes rigorous dimensional inspection before shipment.
- Superior Wear & Impact Resistance: 35SiMn alloy steel with HRC 48–54 surface hardness withstands heavy loads, abrasive job site conditions, and continuous track chain friction without premature wear or cracking .
- Perfect OEM Fitment: Engineered to original Sumitomo LS218 / Link-Belt LS-218H dimensions for plug-and-play installation — no modifications required.
- Stable Undercarriage Performance: Properly guided track rotation prevents deviation, reduces track shoe and sprocket wear, and extends the service life of your entire undercarriage system.
- Complete Undercarriage Solutions: We also supply track rollers (bottom & top), sprockets, track shoes, track chains, and recoil spring assemblies for LS218 and 150+ other crawler crane models .
- Trusted Worldwide: Our undercarriage parts are exported to dealers and end-users across 30+ countries and regions, earning a reputation for low maintenance and stability .
Applications:
Designed for Sumitomo LS218 and Link-Belt LS-218H series crawler cranes operating in heavy construction, bridge building, wind farm installation, petrochemical plant erection, port cargo handling, and large-scale infrastructure projects. Whether your crane is lifting steel structures, setting precast concrete, or handling 80-ton loads on challenging terrain, our LS218 idler delivers the reliability your undercarriage depends on.
Compatible Crane Models:
- Sumitomo LS218, LS218RH, LS218H
- Link-Belt LS-218, LS-218H, LS-218HSL, LS-218H II
- 80-ton class lattice boom crawler cranes (confirm fitment by serial number)
Quality Assurance:
- ISO 9001:2000 certified manufacturing with 20+ years of undercarriage parts expertise
- Material verification — 35SiMn alloy steel meets international standards
- Heat treatment control — rail induction quenching ensures HRC 48–54 surface hardness with ≥ HRC 46 at 6 mm depth
- 100% pre-shipment inspection — dimensional accuracy, hardness testing, and appearance quality verified
- Export-grade packaging — pallet packaging for safe worldwide transport
Ordering & Support:
- MOQ: 1 piece (set of 2: 1 left + 1 right)
- Delivery Time: Within 15 days after payment
- Trade Terms: FOB, CIF, DDU
- Payment: T/T, Western Union, L/C
- Supply Ability: 2,000 pcs/month
- Fitment Verification: LS218 idler configurations can vary by crane serial number and production year. Share your crane’s model and serial number, or send photos of the existing idler, and our engineering team will confirm the exact match before shipment.
Order Your LS218 Crawler Crane Idler Today!
Don’t let a worn idler compromise your crane’s mobility and safety. A failing idler can lead to track deviation, accelerated track chain and sprocket wear, and costly downtime on critical lift projects. Contact us for a competitive factory-direct quote, or add to cart now. We respond to all inquiries within 24 hours and ship worldwide.
+86 1588 0208980
doozer@doozergroup.com
