Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine delivers outstanding precision and tuning stability, featuring a refined 1:18 gear ratio for smooth, accurate adjustments. Precision CNC-machined components and high-grade brass string posts ensure wear-free operation and exceptional longevity.
Equipped with Schaller's innovative stepped flanged washer, this tuning machine centers the string post securely through the banjo bolt without requiring a stepped headstock hole. This design eliminates tilting torque and reduces strain on both the post and rear mounting screws.
Permanently lubricated with Schaller special grease for completely maintenance-free performance, the M6 135 shares identical mounting dimensions with its predecessor model, allowing seamless drop-in replacement on compatible guitars.
| Brand | Schaller |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| Button Bore Hole | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat |
| Post Material | Brass |
| Lubrication | Permanently lubricated with Schaller special grease |
| Weight per Single Unit (Metal Button) | 1.27 oz / 1.34 oz (36 g / 38 g) |
| Weight per Single Unit (Perloid Button) | 1.06 oz / 1.09 oz (30 g / 31 g) |
| Weight per Single Unit (Ebony Button) | 1.06 oz / 1.09 oz (30 g / 31 g) |
| Product Weight | 0.13 lb |




















