Ceramicspeed deep groove ball bearing 61903 17 mm x 30 mm x 7 mm

Product Description CeramicSpeed ball bearing bearing designation 61903 - Ceramic bearings for top performance The CeramicSpeed deep groove ball bearing 61903 with the dimensions 17 mm x 30 mm x 7 mm convinces with extra-hard, super-smooth and heavy-duty ceramic bearing balls. Specifications:Dimensions (Inner x Outer x Width):17 mm x 30 mm x 7 mmDesignation:61903 (6903)Models:61903: Design:deep groove ball bearingsTolerance:ABEC 3Recommended Use:hubs, bottom brackets, headsetsInner Race Material:steelOuter Race Material:steelBall Material:CeramicFeatures:high-performance bearings with special ceramic balls made of grade 3 silicon nitride (best achievable degree for ceramic bearings)CeramicSpeed bearing balls: 15% harder, 100% smoother and 99% more resilient than commercially available ceramic ballsball bearing retainer made of reinforced polyamide, race made of hardened steel with polished channelenergy savings thanks to greatly reduced friction, higher top speed thanks to improved power transfersuitable for all disciplines: road, time trial, triathlon, track, cyclocross, MTBhandmade in DenmarkManufacturer Number:101274 Contents:1 x CeramicSpeed 61903 ball bearing Manufacturer: CeramicSpeed Sport A/S Noergaardsvej 3 7500 Holstebro Denmark info@ceramicspeed.com