Do you need to replace an obsolete General Electric 5PY tachometer? Drive Systems Technology offers the Hubner/Gefran APY series, high-quality, direct replacement for 5PY flange mount tachometers. Available in both 50V and 100V/1000RPM, flange or foot mount configurations.  We stock tachs, adapters, couplings, stub shafts, encoders, etc.