Nadella This RFQ was sourced on www.MFG.com in USA for Linear Roller Bearings Buyer is in search of a Nadella Concentric Guide Roller Bearing, pn: FRN40EI. No substitutions. Buyer Information Industry City/Region Delair, New Jersey Country USA RFQ RFQ Number 432281 Material Technical Specifications Category Linear Roller Bearings Dimensions Get quotes online for manufacturing services at MFG.com from machine shops, fabricators, job shops and contract manufacturers. MFG.com connects buyers and suppliers when the buyer has a need and the supplier has the right expertise and capacity. MFG.com analyzes all engineered parts and RFQs for improved manufacturability and to ensure quality and a quick quoting experience. Linear Roller Bearings: Linear roller bearings are comprised of circulating rollers on a round or flat guide or rail.