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 with high precision and surface-treated to guarantee consistent, wear-free performance and superior tuning stability.
Crafted with premium brass string posts and permanently lubricated with Schaller special grease, these sealed tuners remain completely maintenance-free over their entire lifespan. The self-locking drive mechanism ensures sensitive and reliable adjustments across all playing styles.
Featuring the innovative stepped M6 flanged washer, this tuning machine simplifies installation by reliably centering the string post without requiring a stepped headstock bore. It shares identical mounting dimensions with its predecessor model for direct, modification-free replacement.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| 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 banjo bolt |
| Product Weight | 0.79 lb |
| Lubrication | Permanently lubricated with Schaller special grease |
