ButterBearing® Clock Repair Bearings & Pre-Fitted Kits

$45.00

ButterBearing® 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.

Standard Bearing Sizes

Part	Pivot Range	Recommended Drill
B2	0.50–1.00 mm	5 mm
B3	0.90–2.00 mm	6 mm
B4	1.90–3.00 mm	7 mm
B5	2.90–4.00 mm	8 mm
B6	3.90–5.00 mm	10 mm
B7	4.90–6.00 mm	11 mm
B8	5.90–7.00 mm	12 mm
B9	6.90–9.00 mm	14 mm

T1: thrust bearing for Urgos tubular chime roll.

Quantity: 6 bearings per standard pack. Pre-fitted BK kits are supplied for the specific movement components listed in the variant menu.

ButterBearing® Clock Repair Bearings & Pre-Fitted Kits

$45.00