Products Description
Chain Grinder 200x4.8mm / 7-7/8x3/16" – Precision Sharpening Wheel for Bench Grinders
Premium Replacement Grinding Wheel for 3/8″ and .325″ Pitch Chainsaw Chains
This 200x4.8mm / 7-7/8x3/16" grinding wheel is a professional-grade replacement designed for chainsaw chain sharpeners, delivering consistent, accurate sharpening for a wide range of saw chains. The 200mm (7-7/8") diameter is compatible with most full-size bench-mounted chain grinders , while the 3/16" (4.8mm) thickness is specifically engineered for sharpening standard 3/8" pitch chains and most .325" pitch chains . The 7/8" arbor hole ensures secure fitment on most professional and hobbyist chain grinding machines . Available in premium aluminum oxide vitrified bond or CBN (cubic boron nitride) options , this wheel delivers a cool, clean grind that preserves cutter hardness, reduces heat damage, and extends chain life. Manufactured to OEM specifications, it is ideal for use with Oregon, Tecomec, Stihl, Forester, and other professional grinders.
Technical Profiles & Materials
Precision 3/16" (4.8mm) Thickness – The 3/16" wheel thickness is the standard specification for sharpening most standard 3/8" pitch chains, .325" pitch chains (20, 21, 22, 95 series chains only), and .404" pitch chains . This thickness creates the correct cutter geometry and gullet profile for aggressive, efficient cutting . For 3/8" pitch low-profile (90, 91 series) chains, a thinner 1/8" wheel may be more suitable .
Standard 7/8" Arbor (22.2mm) Fitment – The 7/8" arbor hole provides compatibility with most full-size bench and wall-mounted chain grinders , including Oregon (410, 511AX, 520-120, 620-120), Tecomec (Super Jolly, Jolly Star), Stihl, Forester, and many Italian and Chinese-made professional chain grinders .
200mm (7-7/8") Diameter – The 200mm wheel diameter provides extended grinding surface life and consistent contact with the cutter tooth, reducing dressing frequency and delivering accurate sharpening results over extended use . The compact 5.75" version (OR534-316A) also offers precision performance in a space-saving design .
Technical Specifications
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Products Application
Chainsaw Chain Sharpening for 3/8" and .404" Chains
The 3/16" wheel is the standard choice for sharpening standard 3/8" pitch and .404" pitch chains used on professional and semi-professional saws, as listed in OEM grinding charts . It cuts the correct radius into the gullet and restores proper tooth geometry for fast, efficient cutting, delivering a precision finish .
.325" Pitch Chain Sharpening
This wheel is compatible with .325" pitch chains from specific families, including Oregon's 20, 21, 22, and 95 series chains . It provides the necessary gullet clearance and cutting angle for optimal .325" chain performance .
Bench-Mounted Chain Grinder Service
Designed for use with full-size professional chain grinders , providing reliable, professional-grade sharpening results for forestry, arborist, workshop, and commercial sharpening service applications. The wheel is compatible with Oregon 410, 511AX, 520-120, 620-120, as well as Tecomec and Forester grinder models .
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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FAQ
Q: How do I confirm this grinding wheel fits my chain grinder?
A : Measure the arbor hole and arbor size of your current wheel. This wheel has a 7/8" (22.2mm) arbor, which is the standard size for most professional chain grinders, including Oregon (410, 511AX, 520-120, 620-120), Tecomec, and Forester models . Some smaller machines may use a different arbor (e.g., 5/8"), so verify before ordering .
Q: What is the difference between 3/16" and 1/8" grinding wheels?
A: The 3/16" (4.8mm) wheel is used for sharpening standard 3/8" pitch, .404" pitch, and certain .325" pitch chains , while the 1/8" (3.2mm) wheel is typically for 3/8" low-profile chains (such as 90 and 91 series) and some .325" chains . Using the correct thickness is essential for achieving the proper tooth profile and gullet clearance.
Q: What chains are compatible with the 3/16" wheel?
A: The 3/16" wheel is compatible with standard 3/8" pitch chains (all except 90 and 91 series), .404" pitch chains, and .325" pitch chains from the 20, 21, 22, and 95 series . For low-profile 3/8" chains (90, 91 series), a 1/8" wheel is recommended .
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