{"product_id":"butterbearing-clock-repair-bearings-kits","title":"ButterBearing® Clock Repair Bearings \u0026 Pre-Fitted Kits","description":"\u003cp\u003e\u003cstrong\u003eButterBearing®\u003c\/strong\u003e is a ball-bearing system for clock repair designed to replace conventional bushings at high-wear pivot locations. Standard B-series packs include six bearings plus a bushing or sleeve to accommodate intermediate pivot sizes. The bushing or sleeve may need to be broached to fit the pivot.\u003c\/p\u003e\u003ch3\u003eStandard Bearing Sizes\u003c\/h3\u003e\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003ePart\u003c\/th\u003e\n\u003cth\u003ePivot Range\u003c\/th\u003e\n\u003cth\u003eRecommended Drill\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB2\u003c\/td\u003e\n\u003ctd\u003e0.50–1.00 mm\u003c\/td\u003e\n\u003ctd\u003e5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB3\u003c\/td\u003e\n\u003ctd\u003e0.90–2.00 mm\u003c\/td\u003e\n\u003ctd\u003e6 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB4\u003c\/td\u003e\n\u003ctd\u003e1.90–3.00 mm\u003c\/td\u003e\n\u003ctd\u003e7 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB5\u003c\/td\u003e\n\u003ctd\u003e2.90–4.00 mm\u003c\/td\u003e\n\u003ctd\u003e8 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB6\u003c\/td\u003e\n\u003ctd\u003e3.90–5.00 mm\u003c\/td\u003e\n\u003ctd\u003e10 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB7\u003c\/td\u003e\n\u003ctd\u003e4.90–6.00 mm\u003c\/td\u003e\n\u003ctd\u003e11 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB8\u003c\/td\u003e\n\u003ctd\u003e5.90–7.00 mm\u003c\/td\u003e\n\u003ctd\u003e12 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eB9\u003c\/td\u003e\n\u003ctd\u003e6.90–9.00 mm\u003c\/td\u003e\n\u003ctd\u003e14 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003cp\u003e\u003cstrong\u003eT1:\u003c\/strong\u003e thrust bearing for Urgos tubular chime roll.\u003c\/p\u003e\u003cp\u003e\u003cstrong\u003eQuantity:\u003c\/strong\u003e 6 bearings per standard pack. Pre-fitted BK kits are supplied for the specific movement components listed in the variant menu.\u003c\/p\u003e","brand":"Butterworth Clocks","offers":[{"title":"B2 – 0.50–1.00 mm pivot – 5 mm drill","offer_id":49252623745194,"sku":"BB-B2","price":45.0,"currency_code":"USD","in_stock":true},{"title":"B3 – 0.90–2.00 mm pivot – 6 mm drill","offer_id":49252623777962,"sku":"BB-B3","price":45.0,"currency_code":"USD","in_stock":true},{"title":"B4 – 1.90–3.00 mm pivot – 7 mm drill","offer_id":49252623810730,"sku":"BB-B4","price":45.0,"currency_code":"USD","in_stock":true},{"title":"B5 – 2.90–4.00 mm pivot – 8 mm drill","offer_id":49252623843498,"sku":"BB-B5","price":45.0,"currency_code":"USD","in_stock":true},{"title":"B6 – 3.90–5.00 mm pivot – 10 mm drill","offer_id":49252623876266,"sku":"BB-B6","price":45.0,"currency_code":"USD","in_stock":true},{"title":"B7 – 4.90–6.00 mm pivot – 11 mm 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