Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine sets a benchmark for closed-type tuning systems with a precise 1:18 gear ratio that provides exceptionally smooth and accurate tuning stability. Built with premium CNC-machined components and a self-locking drive mechanism, it ensures sensitive adjustment and consistent performance under tension.
Engineered with high-grade brass string posts fitted precisely into the housing, these tuners deliver long-lasting durability and zero-play functionality. The innovative stepped M6 flanged washer centers the string post securely over the hollow screw, eliminating tilting torque and protecting the headstock without requiring stepped bore holes.
Featuring permanently lubricated internal gearing with Schaller special grease, these maintenance-free tuning machines share identical installation dimensions with previous generations for effortless drop-in replacement on compatible electric and acoustic guitars.
| Brand | Schaller |
| Model | M6 135 |
| Series | M6 Series |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Button Bore Hole | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat |
| Single Tuner Weight (Metal Buttons) | 0.08 lb / 0.08 lb (36 g / 38 g) including hollow screw |
| Single Tuner Weight (Perloid Buttons) | 0.07 lb / 0.07 lb (30 g / 31 g) including hollow screw |
| Single Tuner Weight (Ebony Buttons) | 0.07 lb / 0.07 lb (30 g / 31 g) including hollow screw |
| Total Weight | 0.79 lb |
| Mounting Screws Included | 6 x M2.2 x 9.5 mm |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
