Products Description
20" .325 .058 76DL Chainsaw Guide Bar for 5200/5800
Oregon-Style Laminated Sprocket Nose Bar | 1.5mm Gauge Replacement for 52CC–58CC Gas Chainsaws Oregon
Chain saw 5200/5800 20" 325 058 1.5mm 76DL Oregon 3-in-1 guide bar
This 20-inch .325-pitch .058-gauge chainsaw guide bar is purpose-built as a direct OEM-grade replacement for the widely used 5200 and 5800 series gasoline chainsaws. Engineered with 76 drive links compatibility and a 1.5mm rail groove, it delivers precise chain tracking, reduced vibration, and consistent cutting depth across extended work cycles. The Oregon-style 3-in-1 laminated sprocket-nose construction combines the structural rigidity of a solid bar with the low-friction tip performance of a replaceable sealed-bearing nose sprocket, effectively lowering kickback incidence while maintaining high chain speed through the cut. Manufactured under strict dimensional tolerances, this bar fits 45CC, 52CC, and 58CC powerheads across multiple Chinese and international branded chainsaw platforms including the 4500, 5200, and 5800 models. The heat-treated rail profile resists mushrooming and groove spread even under prolonged high-RPM loads, making it a dependable workhorse for professional arborists, forestry crews, farm operators, and landscaping contractors who demand consistent cutting performance and minimal downtime.
Technical Profiles & Materials
Triple-Layer Laminated Steel Core：
The bar body is constructed from three precision-bonded layers of high-carbon manganese steel (65Mn equivalent), fused under controlled pressure and temperature to form a single rigid assembly. This laminated architecture delivers an optimal strength-to-weight ratio - lighter than a solid-machined bar of equivalent gauge, yet resistant to lateral deflection when the chain binds or the operator applies corrective torque during angled bucking cuts. The center layer is laser-profiled to form the internal chain-lubrication channel, while the outer layers are surface-ground to parallelism within 0.03mm, ensuring uniform rail contact along the entire bar length.
Induction-Hardened Rail Edges：
Both rail edges undergo high-frequency induction hardening, creating a hardened case depth of 0.8–1.2mm with surface hardness reaching HRC 58–62, while the core material retains its original toughness at HRC 38–42. This differential hardening profile means the rail surfaces resist abrasive wear from thousands of chain-link passes per minute, yet the bar as a whole absorbs impact energy without brittle fracture.
Technical Specifications
| ITEM | DETAILS |
| Type | 20" Sprocket-Nose Laminated Guide Bar |
| Application | Gasoline Chainsaw - 4500 / 5200 / 5800 Series (45CC–58CC) |
| Code | 0118464 |
| Material | 3-Layer Laminated 65Mn High-Carbon Steel, Induction-Hardened Rails (HRC 58–62), Phosphate + Matte Black Powder Coat |
| Details explanation | Bar Length: 20" (508mm) · Pitch: .325" (8.255mm) · Gauge: .058" (1.50mm) · Drive Links: 76 DL · Nose: Replaceable Sealed-Bearing Sprocket (12T) · Groove Tolerance: ±0.015mm · Mounting: T-Slot, 5200/5800 Stud Pattern · Net Weight: 1.05 kg · MOQ: 100 PCS |
| Brand Name | SeaSummer |
| Operating Temp | -20°C to +80°C Continuous Duty |
| Delivery Time | 30 Days |
| Packaging | Cardboard packaging |
Products Application
Commercial Forestry & Timber Harvesting
This 20-inch bar is engineered for high-volume, sustained-duty bucking and felling operations in both softwood plantations (pine, spruce, fir) and mixed hardwood stands (oak, maple, beech). When mounted on a 58CC powerhead, it efficiently handles tree diameters up to approximately 36 inches using a double-sided felling technique. The .325-inch pitch offers a favorable balance between chip clearance and smooth cutting - finer than 3/8-inch setups for reduced operator fatigue during limbing, yet aggressive enough for production cross-cutting.
Orchard Pruning, Vineyard Management & Maintenance
In orchard and vineyard settings where annual pruning, structural limb removal, and dead-wood clearing are essential for crop yield optimization, this guide bar provides the reach and durability required for sustained seasonal use. The 20-inch bar length allows operators to access interior canopy branches on mature fruit and nut trees (apple, pear, pecan, olive, citrus) without excessive ladder repositioning, while the .325-inch pitch and .058-gauge combination delivers clean, bark-friendly cuts that promote rapid wound compartmentalization and reduce pathogen entry risk.
Vegetation Management, Storm Response & Arboriculture
Municipal works departments, utility right-of-way crews, and professional arboriculture teams require equipment that can handle unpredictable cutting conditions - from clean green wood to embedded grit, ice, and tension-loaded storm-damaged limbs. This guide bar's replaceable sprocket-nose design is a critical advantage in these scenarios, as the tip - the most frequently damaged bar component during plunge cuts and bore-cutting operations - can be swapped on-site without returning the saw to the shop.
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.
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FOR 10000+ OUALITY PARTS
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BACKED BY 200+ TRUSTED FACTORY PARTNERS
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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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