Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine sets an industry benchmark for precision and tuning stability. Engineered with an improved 1:18 gear ratio, it provides exceptionally smooth, sensitive, and accurate adjustments. High-precision CNC-machined components and self-locking drive mechanics ensure consistent and dependable performance.
Featuring high-grade brass posts precisely fitted into the housing, this tuning machine offers long-term wear resistance. The innovative stepped M6 flanged washer centers the string post reliably through the banjo bolt, eliminating tilting moment and relieving mechanical stress on both the post and the rear mounting screw without requiring stepped headstock drilling.
All enclosed housings are permanently lubricated with Schaller special grease for entirely maintenance-free operation. Designed to match the exact mounting dimensions of its predecessor, the M6 135 allows direct replacement and retrofitting on standard guitar headstocks.
| Brand | Schaller |
| Model | M6 135 |
| Gear Ratio | 1:18 |
| Button Bore Hole | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat |
| 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 |
| Mounting Screws Included | 6 x M2.2 x 9.5 |
| Weight | 0.13 lb |
