{"product_id":"bk25-cast-iron-v-belt-pulley-1-groove-b-section","title":"BK25 Cast Iron V-Belt Pulley — 2.50\" OD, 1-Groove (B\/5L Section)","description":"\u003cp\u003eThe \u003cstrong\u003eBK25\u003c\/strong\u003e is a precision-machined single-groove cast iron V-belt pulley with a \u003cstrong\u003e2.50\" outside diameter\u003c\/strong\u003e, available with a finished \u003cstrong\u003e1\/2\" or 1\" fixed bore\u003c\/strong\u003e for direct shaft mounting. Designed for \u003cstrong\u003eB-section (5L)\u003c\/strong\u003e V-belts — and compatible with 4L\/A belts — it delivers smooth, reliable power transmission on air compressors, blowers, fans, and general industrial drives.\u003c\/p\u003e\n\u003ch3\u003eKey Specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e BK25\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutside diameter:\u003c\/strong\u003e 2.50\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrooves:\u003c\/strong\u003e 1 (single groove)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBelt section:\u003c\/strong\u003e B \/ 5L (also fits 4L \/ A)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore:\u003c\/strong\u003e 1\/2\" or 1\" fixed (finished) bore with setscrew\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e Fine-grained cast iron, statically balanced and painted\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eTypical Applications\u003c\/h3\u003e\n\u003cp\u003eAir compressors, HVAC blowers, exhaust fans, pumps, and general industrial and agricultural belt-drive equipment.\u003c\/p\u003e\n\u003cp\u003eThe BK25 cast iron sheave is statically balanced for vibration-free operation at speed, making it a dependable replacement pulley for single-phase and three-phase motor drives wherever a 2.50\" OD B-section pulley is required — select the 1\/2\" or 1\" bore to match your shaft.\u003c\/p\u003e","brand":"Warthog Air Compressor Store","offers":[{"title":"1\/2\"","offer_id":54384649896211,"sku":"BK25x1\/2","price":23.0,"currency_code":"USD","in_stock":true},{"title":"1\"","offer_id":54385423221011,"sku":"BK25x1","price":23.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0825\/3141\/8387\/files\/BK25x5_8_primary_image__CZWB_v1_a87071ce-d4c1-4250-af5d-8aef9f09f42f.png?v=1783363351","url":"https:\/\/aircompressorstore.com\/products\/bk25-cast-iron-v-belt-pulley-1-groove-b-section","provider":"Warthog Air Compressor Store","version":"1.0","type":"link"}