Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers outstanding precision and tuning comfort with an upgraded 1:18 gear ratio. All components are high-precision CNC-machined and surface-finished, featuring a self-locking drive mechanism that guarantees smooth, sensitive, and stable tuning performance.
Crafted with premium brass string posts precisely fitted into the housing, these tuners ensure maximum tuning stability and wear-free operation. The enclosed housing comes permanently lubricated with Schaller special grease, providing completely maintenance-free functionality over its entire lifespan.
Featuring the innovative stepped M6 flanged washer with a 0.39 in (10 mm) diameter base, this tuner reliably centers the string post via the banjo bolt without requiring a stepped peghead bore. This design eliminates tilting moment, relieves pressure on both the post and rear mounting screw, and shares identical installation dimensions with its predecessor for straightforward replacement.
| Brand | Schaller |
| Series | M6 Series |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Lubrication | Permanent Special Grease |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| Weight per Single Tuner with Button (Small/Large) | Metal (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including hollow screw |
| Product Weight | 0.79 lb |
