Link-Belt215FX25shaft-mounted helical gear drive cross-reference model · Exact Link-Belt 215FX25 nameplate identity documented in Falk / Rexnord's Falk Quadrive Interchange and Nomenclature Guide 371-810. The published record provides ratio guidance "25:1" and size / dimensional reference "215". 1 published replacement relationship is linked below. Evidence class: published selection. Verify the complete installed nameplate, shaft or bore, mounting, torque, duty, accessories and environment before substitution.