{"title":"Reduction Rings","description":"\u003ch2\u003eReduction Ring (Bushing) Selection — Quick Reference\u003c\/h2\u003e\n\u003cp\u003eReduction rings (bushings \/ arbor bushings) = ADAPT saw blades + abrasive discs + rotating tooling between MOUNTING BORE SIZES — fits 25.4mm (1\") blade on 22.2mm (7\/8\") arbor + similar combinations. Workshop essential for blade compatibility.\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eReduction Ring Type\u003c\/th\u003e\n\u003cth\u003eBest For\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e25.4mm → 22.2mm\u003c\/td\u003e\n\u003ctd\u003e1\" blade → 7\/8\" arbor — common circular saw\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e30mm → 25.4mm\u003c\/td\u003e\n\u003ctd\u003e30mm bore → 25.4mm shaft\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e32mm → 25.4mm\u003c\/td\u003e\n\u003ctd\u003eEU 32mm blade → standard arbor\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e16mm \/ 13mm \/ 12mm Common Smaller\u003c\/td\u003e\n\u003ctd\u003eVarious smaller reductions\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSingle-Use Plastic \/ Cardboard\u003c\/td\u003e\n\u003ctd\u003eDisc \/ blade alignment + first install\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSteel \/ Permanent\u003c\/td\u003e\n\u003ctd\u003eWorkshop + sustained use\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSet (Multiple Sizes)\u003c\/td\u003e\n\u003ctd\u003eWorkshop versatility\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e\u003cstrong\u003eCritical:\u003c\/strong\u003e Ring must SEAT FULLY before tightening blade. Don't substitute for missing manufacturer's ring — incorrect bushing = wobble + blade damage + injury. NOT a \"fix\" for damaged arbor — replace arbor or machine. Companion: \u003ca href=\"\/en-nz\/collections\/diamond-saw-blades\"\u003ediamond saw blades\u003c\/a\u003e, \u003ca href=\"\/en-nz\/collections\/circular-saw-blades\"\u003ecircular saw blades\u003c\/a\u003e, \u003ca href=\"\/en-nz\/collections\/cut-off-wheels\"\u003ecut-off wheels\u003c\/a\u003e, \u003ca href=\"\/en-nz\/collections\/grinding-wheels-accessories\"\u003egrinding wheels\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch2\u003eReduction Rings\u003c\/h2\u003e\n\u003cp\u003eReduction rings (also called bushings or arbor bushings) adapt saw blades, abrasive discs, and other rotating tooling between mounting bore sizes — letting you fit a 25.4mm bore blade onto a 22.2mm spindle, or a 30mm bore disc onto a 25mm arbor. They're the small, often-overlooked components that make the difference between using the tool you have and buying new tooling because the bore doesn't match. AIMS Industrial stocks reduction rings in the standard size combinations for trade and industrial users.\u003c\/p\u003e\n\n\u003ch3\u003eWhere reduction rings earn their place\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCircular saw blades\u003c\/strong\u003e — adapting blades from one saw to another with different arbor size\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAbrasive cutting and grinding discs\u003c\/strong\u003e — fitting discs from various sources onto angle grinders\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBench grinder wheels\u003c\/strong\u003e — fitting wheels with different bore sizes onto specific grinders\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDiamond blades and core drills\u003c\/strong\u003e — adapting between standard mounting sizes\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHole saws and arbors\u003c\/strong\u003e — converting between common arbor thread and bore combinations\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe standard size combinations\u003c\/h3\u003e\n\u003cp\u003eCommon reduction ring sets cover the most-used spindle and bore size combinations:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e30mm bore → 25.4mm spindle\u003c\/strong\u003e — common for circular saw blades\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e25.4mm bore → 22.2mm spindle\u003c\/strong\u003e — common for abrasive cutting discs\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e22.2mm bore → 16mm spindle\u003c\/strong\u003e — angle grinder applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e22.2mm bore → 12.7mm spindle\u003c\/strong\u003e — smaller power tool applications\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eMaterial and construction\u003c\/h3\u003e\n\u003cp\u003eReduction rings are typically machined steel — strong enough to handle the rotational forces, and with the dimensional tolerance to fit cleanly without slop. Cheap stamped or formed rings can be slightly oversize or undersize, causing wobble or being impossible to fit. Quality reduction rings should slide on with minimal force and produce no perceptible wobble when the blade or disc is mounted.\u003c\/p\u003e\n\n\u003ch3\u003eMulti-bore versus single-step rings\u003c\/h3\u003e\n\u003cp\u003eSingle-step rings reduce from one bore size to one spindle size. Multi-bore (stepped) rings have multiple internal diameters, allowing a single ring to adapt the same outer bore to several different spindle sizes. Multi-bore rings are convenient for workshops handling varied tooling but slightly more expensive than single-step rings. For most workshops, a small selection of common single-step rings covers the everyday work.\u003c\/p\u003e\n\n\u003ch3\u003eImportant — concentricity and balance\u003c\/h3\u003e\n\u003cp\u003eA reduction ring with poor dimensional tolerance produces an unbalanced rotating assembly. A circular saw blade with a slightly off-centre ring vibrates noticeably, cuts unevenly, and shortens the blade's life. For high-speed applications (angle grinder discs at 12,000 RPM), poor concentricity is a safety risk — the unbalanced disc can fail catastrophically. Buy quality rings, replace damaged or worn rings, and don't run rotating tooling that wobbles visibly when stationary.\u003c\/p\u003e\n\n\u003ch3\u003eWhen NOT to use reduction rings\u003c\/h3\u003e\n\u003cp\u003eSome applications don't tolerate reduction rings well. High-speed precision work (CNC milling, surface grinding) typically requires direct-fit tooling rather than adapted bores. Some safety-critical applications (e.g., hard-mounted abrasive wheels in dedicated grinders) specify direct-fit only. Check the tool manufacturer's specification — if reduction rings are not supported, don't use them.\u003c\/p\u003e\n\n\u003cp\u003eNeed help with size matching or specific arbor adaptation? \u003ca href=\"\/en-nz\/pages\/contact-us\"\u003econtact our team\u003c\/a\u003e — we'll match the right ring to your application.\u003c\/p\u003e","products":[{"product_id":"klingspor-reduction-ring-dz100rr-25mm-x-2-5mm-x-20mm-328934","title":"Klingspor Reduction Ring DZ100RR 25mm x 2.5mm x 20mm (328934)","description":"\u003cdiv style=\"max-width:680px;width:100%;padding:12px 0;font-family:Arial,sans-serif;\"\u003e\n\u003cdiv style=\"display:flex;align-items:flex-start;justify-content:space-between;border-top:1px solid #e0e0e0;border-bottom:1px solid #e0e0e0;padding:16px 0;margin-bottom:24px;\"\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e◆\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003eKlingspor diamond blade for trade and production use\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e●\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003eGerman-engineered Klingspor abrasive\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"flex:1;padding:0 12px;text-align:center;\"\u003e\n\u003cdiv style=\"font-size:24px;color:#333;margin-bottom:6px;line-height:1;\"\u003e▲\u003c\/div\u003e\n\u003cdiv style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4;\"\u003e25.4 x 2.5 x 20 mm\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cp style=\"font-size:14px;line-height:1.6;color:#444;margin:0;\"\u003eThis Klingspor diamond blade is built for production engineering and trade use. Engineered to Klingspor production standards in Germany. Built to 25.4 x 2.5 x 20 mm diameter x thickness x bore. Stocked at AIMS Industrial as part of the Klingspor diamond blades and cup wheels range.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Klingspor","offers":[{"title":"Default Title","offer_id":49128457339157,"sku":"A0097507","price":14.91,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0740\/5191\/1957\/files\/klingspor-reduction-ring-dz100rr-25mm-x-2-5mm-x-20mm-3289341.jpg?v=1756286204"},{"product_id":"pferd-reducing-ring-25-4-x-20-x-3-0mm-pack-of-5","title":"Pferd Reducing Ring 25.4 x 20 x 3.0mm - Pack of 5","description":"\u003cdiv style=\"max-width:680px;width:100%;padding:12px 0;font-family:Arial,sans-serif\"\u003e\n\u003cdiv style=\"display:grid;grid-template-columns:1fr 1fr 1fr;gap:0\"\u003e\n\u003cdiv style=\"padding:0 16px;border-right:1px solid #e0e0e0\"\u003e\u003cdiv style=\"padding:10px 0;\"\u003e\n\u003cspan style=\"font-size:15px;font-weight:700;margin-right:8px;\"\u003e◆\u003c\/span\u003e\u003cspan style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4\"\u003eFlexible adjustment to the prerequisites of the drive system\u003c\/span\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv style=\"padding:0 16px;border-right:1px solid #e0e0e0\"\u003e\u003cdiv style=\"padding:10px 0;\"\u003e\n\u003cspan style=\"font-size:15px;font-weight:700;margin-right:8px;\"\u003e●\u003c\/span\u003e\u003cspan style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4\"\u003eWith stop collar, to prevent the ring from pushing through the centre hole of the cut-off wheel\u003c\/span\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003cdiv style=\"padding:0 16px\"\u003e\u003cdiv style=\"padding:10px 0;\"\u003e\n\u003cspan style=\"font-size:15px;font-weight:700;margin-right:8px;\"\u003e▲\u003c\/span\u003e\u003cspan style=\"font-size:14px;font-weight:500;color:#333;line-height:1.4\"\u003eSafety notes Ensure that the flanges on the drive system are backed off in order to mount the tool s\u003c\/span\u003e\n\u003c\/div\u003e\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-top:24px;padding:0 4px;\"\u003e\u003cp style=\"font-size:14px;color:#333;line-height:1.6;margin:0\"\u003eReducing rings enable secure adjustment of the standard centre hole to a reduced centre hole dimension.\u003c\/p\u003e\u003c\/div\u003e\n\u003c\/div\u003e","brand":"Pferd","offers":[{"title":"Default Title","offer_id":49300627554581,"sku":"A0167895","price":45.78,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0740\/5191\/1957\/files\/pferd-reducing-ring-254-x-20-x-30mm-pack-of-5-7690722.jpg?v=1781505010"}],"url":"https:\/\/aimsindustrial.com.au\/en-nz\/collections\/reduction-rings.oembed","provider":"AIMS Industrial Supplies","version":"1.0","type":"link"}