Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine offers exceptional precision and tuning comfort with an upgraded 1:18 gear ratio. All components are CNC-machined and surface-finished, featuring self-locking drives and high-grade brass posts engineered for wear-free operation and maximum tuning stability.
Featuring the innovative stepped M6 flanged washer with a 0.39-inch diameter base, this tuning machine reliably centers the string post through the banjo bolt without requiring a stepped headstock bore. This design eliminates tilt torque while relieving mechanical stress on both the string axis and rear mounting screw.
Permanently lubricated with Schaller special grease for completely maintenance-free performance, the M6 135 maintains identical installation dimensions to its predecessor for direct, modification-free replacement.
| Brand | Schaller |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| Product Weight | 0.79 lb |
| Weight per Tuner (Small/Large Button) | Metal (1.27 oz / 1.34 oz), Pearloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including banjo bolt |
| Button Bore Hole | 0.17 in diameter with 0.14 in drive flat |
| Mounting Hardware Included | 6 banjo bolts, 6 flanged washers, 6 mounting screws (M2.2 x 0.37 in) |
| Post Material | Brass |
| Lubrication | Schaller special grease (maintenance-free) |
