Looking for Philips N-4504 roller part# 4H52870018. Trying to resurrect my system. Replaced the bands, cleaned and lubed the reel to reel. It plays but the roller is cracked. Because of its
PHILIPS N 4504 PLAYBACK & RECORD - YouTube
Philips N4504 Reel to Reel speed and Bias calibration - YouTube
Repair of reel recorder Aristona EW5504 - Amedeo Valoroso