Products Description
Forged Steel Crankshaft Assembly fits HUS 61 268 272 Chainsaw | Professional Engine Rebuild Parts
Precision-Balanced 20CrMo Alloy Steel Crankshaft with Needle Bearing Interface for High-Performance Logging Maintenance.
Chain saw HUS61/HUS268/HUS272 Crankshaft
The HUS61/268/272 rotational power-core constitutes a high-precision mechanical restoration module engineered for heavy-duty timber felling units. Forged from high-density 20CrMo metallurgical substrate, it ensures exceptional dynamic load equilibrium and absolute immunity to rotational fatigue at speeds exceeding 12,000 RPM. This critical engine component features induction-hardened journals and a precision-matched connecting rod, designed to stabilize torque delivery and minimize parasitic vibrations during intensive forestry operations. Technical Data: Surface hardness HRC 58-62, rotational balance verified for 13,500 RPM, structural integrity certified for 60cc-75cc displacement. Materials: High-persistence 20CrMo forged alloy matrix with a silver-plated needle cage interface. Certification: Validated for professional forestry emission and mechanical safety protocols. Ideal for HUS-series professional saws, providing a high-durability solution for comprehensive engine overhauls.
Technical Profiles & Materials
Forged 20CrMo Alloy Matrix: The crankshaft chassis is drop-forged from specialized Chromium-Molybdenum steel, delivering superior structural density and high-torque resilience compared to standard cast components.
Induction-Hardened Journals: Features multi-stage thermal induction hardening on all bearing surfaces, providing an extreme hardness threshold (HRC 60+) to eliminate axial wear and surface galling under thermal stress.
Dynamic Load Balancing Logic: Engineered with a precision-weighted counterweight geometry, designed to neutralize reciprocal engine forces and ensure a smooth power-stroke transition at peak operational frequencies.
Technical Specifications
| ITEM | DETAILS |
| Type | Heavy-Duty Crankshaft Assembly |
| Application | fits HUS 61 / 268 / 272 / 272XP |
| Code | 0109131 |
| Material | Forged 20CrMo Alloy Steel |
| Metallurgical Hardness | HRC 58-62 |
| Brand Name | SeaSummer |
| Component Kit | Crankshaft + Piston Needle Bearing |
| Delivery Time | 30 Days |
| Packaging | Cardboard packaging |
Products Application
Professional Forestry Logging Operations
Specifically optimized for high-intensity felling in commercial forests. The dynamic balancing ensures the engine remains stable during sustained high-rev wood cutting, essential for the reliability of HUS272XP professional units.
Systematic Powerhead Mechanical Restoration
Ideal for the precision reconstruction of 70cc-class saws. Its high-tolerance metallurgical matrix provides a reliable replacement for original units, restoring factory-grade rotational precision and protecting the drivetrain from catastrophic imbalance.
Heavy-Duty Aftermarket Component Supply
An essential structural power-core module for global repair centers. The robust forged construction withstands the extreme mechanical stress of forestry maintenance while ensuring consistent torque delivery for professional arborists and logging crews.
Quality and Craftsmanship Details
Products Package
About Us
As a premier garden machinery parts supplier, Jiaxing Norsun Trading Co., Ltd. bridges global distributors with over 100 vetted China manufacturers. We streamline your B2B supply chain through strict quality control, flexible production, and factory-direct wholesale pricing. Partner with us for reliable, high-volume sourcing of precision-engineered outdoor power equipment components.
Trusted Partnership Power
YOUR PROFESSIONAL ONE-STOP SOURCE
FOR 10000+ OUALITY PARTS
Verified Factory Excellence
BACKED BY 200+ TRUSTED FACTORY PARTNERS
Production process
Quality control
Expo experience
Customer Reviews
FAQ
Q: Are you an impartial industrial components dealer or a direct China water pump factors factory?
A:We are a direct, ISO9001-certified engineering water pump components manufacturing facility and precision fluid-control factor manufacture exporter primarily based in China. We function our personal cleanroom injection molding bays, computerized ultrasonic welding arrays, computerized hydraulic stress check stations, and clean-room packaging lines, passing direct-factory wholesale price financial savings straight to your element procurement margins.
Q: Can your manufacturing unit furnish full certification forms for food-contact or consuming water compliance?
A: Yes, absolutely. For food, beverage, or scientific applications, our manufacturing unit makes use of one hundred percent virgin, un-recycled polypropylene resins accompanied by means of fabric traceability certificates. We mechanically furnish B2B purchasers with complete FDA compliance documentation, NSF-grade compound declarations, and RoHS/REACH chemical protection screening sheets to make certain clean clearance thru worldwide customs.
Q: Do you provide customization picks for distinctly corrosive fluids like sturdy acids or ozone?
A: Yes, we are a thoroughly succesful OEM/ODM supplier. For aggressive chemical or ozone environments, we can improve the 12x26.5mm valve configuration in our factory: substituting the general PP housing with top class PVDF (Fluoropolymer) and changing any steel springs with Hastelloy or whole springless gravity-ball architecture, making sure final chemical resistance.
Q: How do we impervious a pattern batch to execute computerized lifecycle and burst-pressure testing?
A: We relatively inspire complete laboratory contrast earlier than logging mass grant agreements. We can ship a pattern lot of 5-10 gadgets of our inventory 12x26.5mm take a look at valves for assessment (setup costs and DHL/FedEx air freight apply). Once the factors pass by your inner lifecycle verification and a formal wholesale quantity manufacturing contract or container run is locked in, the sampling charges are a hundred percent credited returned to your industrial balance.
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