Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers precise tuning and smooth operation with an improved 1:18 gear ratio. Engineered with high-precision CNC manufacturing and surface finishing, its self-locking drive ensures consistent and stable performance.
Equipped with solid brass posts fitted accurately into the housing, these tuners provide exceptional tuning stability and wear resistance. Closed-gear construction features lifetime lubrication with specialized grease, making them completely maintenance-free.
Featuring the innovative stepped M6 washer with a 0.39 in (10 mm) base diameter, the tuner centers the string post reliably without requiring a stepped peghead bore. It shares identical mounting dimensions with its predecessor model for direct, seamless replacement.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Model | M6 90 |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
| Button Bore Hole | 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 |
