Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers outstanding precision and smooth tuning comfort with an upgraded 1:18 gear ratio. All components are CNC-machined to exact tolerances and surface-finished, featuring a self-locking drive mechanism that ensures reliable, sensitive, and stable operation.
Crafted with premium brass string posts precision-fitted into the housing, this tuning machine provides maximum tuning stability and wear resistance. Each closed housing is permanently lubricated with Schaller special grease, rendering the unit completely maintenance-free over its entire lifespan.
An innovative stepped collar washer simplifies installation and securely centers the string post via the hollow bolt, eliminating the need for a stepped headstock bore. Sharing identical installation dimensions with its classic predecessor, the M6 90 enables direct drop-in replacement without instrument modifications.
| Brand | Schaller |
| Series | M6 Series |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
| Button Borehole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Single Tuner Weight with Button (Small/Large) | Metal: 1.27 oz / 1.34 oz (36 g / 38 g), Perloid: 1.06 oz / 1.09 oz (30 g / 31 g), Ebony: 1.06 oz / 1.09 oz (30 g / 31 g) |
| Product Weight | 0.79 lb |
