Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine delivers outstanding precision and tuning comfort with an advanced 1:18 gear ratio. CNC-machined components and high-grade brass posts ensure smooth action, self-locking performance, and long-lasting stability.
Featuring the innovative stepped M6 flanged washer, this tuner aligns string posts reliably via the banjo bolt without requiring stepped peghead drilling. This design eliminates tilting moments and relieves mechanical stress from both the post and rear mounting screws.
Permanently lubricated with Schaller special grease for maintenance-free operation, the M6 135 shares identical installation dimensions with its classic predecessor for direct, modification-free retrofitting.
| Brand | Schaller |
| Model | M6 135 |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Mounting Screw Dimensions | M2.2 x 0.37 in (9.5 mm) |
| Weight per Single Tuner with Button (Small / Large) | Metal (1.27 oz / 1.34 oz), Pearloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including banjo bolt |
| Total Weight | 0.79 lb (0.36 kg) |
| Lubrication | Schaller Special Grease (Permanently Lubricated) |




















