{"product_id":"bk-single-groove-b-section-cast-iron-pulley-h-bushing","title":"BK Single-Groove B-Section Cast Iron V-Belt Pulley — H-Bushing Type (Bushing Sold Separately)","description":"\u003cp\u003eThe BK single-groove B-section cast iron V-belt pulley is a precision-machined, statically balanced sheave built for dependable power transmission on air compressors, electric motors, and general belt-driven equipment. This is an H-bushing (bushed) design: the pulley is bored to accept a separate two-piece \"H\" style bushing that clamps firmly onto the shaft as the bolts are tightened — a more secure and serviceable mount than a one-piece fixed-bore pulley. The H bushing is sold separately, so a single pulley can be matched to a range of shaft diameters.\u003c\/p\u003e\n\u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eSingle (1) groove, B-section — also runs 4L, A, and 5L (B\/BX) V-belts\u003c\/li\u003e\n\u003cli\u003eFine-grained cast iron, statically balanced for smooth, vibration-free running\u003c\/li\u003e\n\u003cli\u003eOutside diameters from 3.15\" (BK30H) up to 12.75\" (BK130H)\u003c\/li\u003e\n\u003cli\u003eH-bushing type — requires a separate \"H\" bushing (sold separately)\u003c\/li\u003e\n\u003cli\u003eStandard keyseat and setscrews provided with the mating bushing\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eChoosing the right bushing\u003c\/h3\u003e\n\u003cp\u003eEach pulley needs a matching \"H\" bushing bored to your shaft diameter. Not sure which bushing size you need? Simply add your shaft diameter or motor frame to the end of the pulley part number and we'll include the correct bushing — for example, \u003cstrong\u003eBK30H-145T\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eTypical applications\u003c\/h3\u003e\n\u003cp\u003eAir compressor drives, electric motor and engine drives, fans and blowers, pumps, conveyors, and general industrial power-transmission equipment.\u003c\/p\u003e\n\u003cp\u003eAvailable across the full BK range, this single-groove B-section cast iron V-belt pulley combines a durable, statically balanced casting with the flexibility of the H-bushing system for a secure, shaft-matched fit.\u003c\/p\u003e","brand":"Warthog Air Compressor Store","offers":[{"title":"3.15\" OD (BK30H)","offer_id":54385427349779,"sku":"BK30H","price":36.0,"currency_code":"USD","in_stock":true},{"title":"3.35\" OD (BK32H)","offer_id":54385427382547,"sku":"BK32H","price":39.0,"currency_code":"USD","in_stock":true},{"title":"3.55\" OD (BK34H)","offer_id":54385427415315,"sku":"BK34H","price":39.0,"currency_code":"USD","in_stock":true},{"title":"3.75\" OD (BK36H)","offer_id":54385427448083,"sku":"BK36H","price":39.0,"currency_code":"USD","in_stock":true},{"title":"3.95\" OD (BK40H)","offer_id":54385427480851,"sku":"BK40H","price":39.0,"currency_code":"USD","in_stock":true},{"title":"4.25\" OD (BK45H)","offer_id":54385427513619,"sku":"BK45H","price":40.0,"currency_code":"USD","in_stock":true},{"title":"4.45\" OD (BK47H)","offer_id":54385427546387,"sku":"BK47H","price":41.0,"currency_code":"USD","in_stock":true},{"title":"4.75\" OD (BK50H)","offer_id":54385427579155,"sku":"BK50H","price":42.0,"currency_code":"USD","in_stock":true},{"title":"4.95\" OD (BK52H)","offer_id":54385427611923,"sku":"BK52H","price":43.0,"currency_code":"USD","in_stock":true},{"title":"5.25\" OD (BK55H)","offer_id":54385427644691,"sku":"BK55H","price":44.0,"currency_code":"USD","in_stock":true},{"title":"5.45\" OD (BK57H)","offer_id":54385427677459,"sku":"BK57H","price":44.0,"currency_code":"USD","in_stock":true},{"title":"5.75\" OD (BK60H)","offer_id":54385427710227,"sku":"BK60H","price":45.0,"currency_code":"USD","in_stock":true},{"title":"5.95\" OD (BK62H)","offer_id":54385427742995,"sku":"BK62H","price":47.0,"currency_code":"USD","in_stock":true},{"title":"6.25\" OD (BK65H)","offer_id":54385427775763,"sku":"BK65H","price":50.0,"currency_code":"USD","in_stock":true},{"title":"6.45\" OD (BK67H)","offer_id":54385427808531,"sku":"BK67H","price":57.0,"currency_code":"USD","in_stock":true},{"title":"6.75\" OD (BK70H)","offer_id":54385427841299,"sku":"BK70H","price":54.0,"currency_code":"USD","in_stock":true},{"title":"6.95\" OD (BK72H)","offer_id":54385427874067,"sku":"BK72H","price":56.0,"currency_code":"USD","in_stock":true},{"title":"7.25\" OD (BK75H)","offer_id":54385427906835,"sku":"BK75H","price":58.0,"currency_code":"USD","in_stock":true},{"title":"7.45\" OD (BK77H)","offer_id":54385427939603,"sku":"BK77H","price":59.0,"currency_code":"USD","in_stock":true},{"title":"7.75\" OD (BK80H)","offer_id":54385427972371,"sku":"BK80H","price":60.0,"currency_code":"USD","in_stock":true},{"title":"8.25\" OD (BK85H)","offer_id":54385428005139,"sku":"BK85H","price":67.0,"currency_code":"USD","in_stock":true},{"title":"8.75\" OD (BK90H)","offer_id":54385428037907,"sku":"BK90H","price":71.0,"currency_code":"USD","in_stock":true},{"title":"9.25\" OD (BK95H)","offer_id":54385428070675,"sku":"BK95H","price":76.0,"currency_code":"USD","in_stock":true},{"title":"9.75\" OD (BK100H)","offer_id":54385428103443,"sku":"BK100H","price":79.0,"currency_code":"USD","in_stock":true},{"title":"10.25\" OD (BK105H)","offer_id":54385428136211,"sku":"BK105H","price":81.0,"currency_code":"USD","in_stock":true},{"title":"10.75\" OD (BK110H)","offer_id":54385428168979,"sku":"BK110H","price":87.0,"currency_code":"USD","in_stock":true},{"title":"11.25\" OD (BK115H)","offer_id":54385428201747,"sku":"BK115H","price":90.0,"currency_code":"USD","in_stock":true},{"title":"11.75\" OD (BK120H)","offer_id":54385428234515,"sku":"BK120H","price":96.0,"currency_code":"USD","in_stock":true},{"title":"12.75\" OD (BK130H)","offer_id":54385428267283,"sku":"BK130H","price":106.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0825\/3141\/8387\/files\/1b34sh__31848.1435079693.800.560_product.original.jpg?v=1783364642","url":"https:\/\/aircompressorstore.com\/products\/bk-single-groove-b-section-cast-iron-pulley-h-bushing","provider":"Warthog Air Compressor Store","version":"1.0","type":"link"}