Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 tuning machines offer exceptional tuning stability and precision for guitars, featuring an advanced 1:18 gear ratio for smooth, accurate adjustments. CNC-machined from premium materials with high-grade brass posts, these closed tuners provide a self-locking drive mechanism that ensures lasting performance without wear.
Equipped with an innovative stepped M6 flanged washer, these tuners seat securely without requiring stepped headstock drill holes, effectively eliminating tilting torque and protecting the string post. Each unit is permanently lubricated with Schaller special grease, making the entire enclosed mechanism completely maintenance-free.
Engineered to match the exact mounting dimensions of previous generation models, the M6 135 allows for direct drop-in replacement without instrument modifications. Available in multiple locking and solid headstock configurations, it delivers robust string retention and flawless intonation control.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Model | M6 135 |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Weight | 0.79 lb |
| Button Borehole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Single Tuner Weight (Small / Large Button) | Metal: 1.27 oz / 1.34 oz (36 g / 38 g); Perloid: 1.06 oz / 1.09 oz (30 g / 31 g); Ebony: 1.06 oz / 1.09 oz (30 g / 31 g) |
| Lubrication | Permanently lubricated with Schaller special grease |


















