MechPort 2pcs Mini Disc Belts 136897-SK-09 4-227-025-01 Compatible with Sony MDS-S50

Mini disc drive belt replacement compatible with Sony MDS-S50 and MDS-S50M restores steady loading and eject, reducing slip and stall so the deck engages quickly for daily playback, recording, and testing. OEM reference fit includes 136897-SK-09 and 4-227-025-01 for accurate sizing and tension, aligning with the loading motor path to maintain proper torque transfer and reliable mechanism timing in MD decks. Square rubber belt size 17.5 mm inner diameter, 53.3 mm circumference, 1 mm thickness delivers stable traction, lowers flutter, and supports smooth tray travel across repeated cycles in home and workshop use. Audio repair belt elastic rubber composition limits set from storage, suitable for bench servicing, home audio maintenance, and office equipment care, helping revive legacy mini disc players and recorders. Easy install belt fits common loading pulleys and motors, use tweezers to seat the belt and clean grooves before fitting, avoid oils, ideal for enthusiasts, technicians, and classroom practice scenarios.