Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine delivers exceptional tuning accuracy and smooth operation, driven by a refined 1:18 gear ratio. All components are high-precision CNC-machined and surface-treated, featuring a self-locking mechanism that guarantees consistent, reliable, and wear-free tuning stability over extended playing sessions.
Crafted with premium brass string posts and permanently lubricated with Schaller special grease, these tuners operate completely maintenance-free. The innovative stepped M6 flanged washer ensures solid, reliable centering of the post via the banjonut, eliminating tilting moment and removing stress from both the post and mounting screw without requiring a stepped headstock bore.
Featuring the exact same installation dimensions as its classic predecessor, the M6 135 allows direct retrofitting and replacement on existing instruments without modification.
| Brand | Schaller |
| Model | M6 135 |
| SKU | 10020523.06.52 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Post Material | High-Grade Brass |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Individual Weight 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 banjonut |
| Product Weight | 0.79 lb |
| Included Hardware | 6 banjonuts, 6 flanged washers, 6 mounting screws (M2.2 x 9.5 mm / M2.2 x 0.37 in) |




















