https://www.nationalprecision.com/products/p/bushings/metal-ptfe/inch-series-bearings/48nu40/
48NU40 Bushings Metal - PTFE Inch Series Bearings | National Precision Bearings
National Precision Bearing 48NU40 (REF 48NU40) Bushings Metal - PTFE Inch Series Bearings Shop/request a quote - Replacement for GGB 48DU40, ISOSTATIC 48TU40.
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