Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine offers exceptional tuning precision and stability with an improved 1:18 gear ratio. Designed to set the standard for closed machine heads, it delivers smooth, velvety operation and reliable performance for players of all levels.
Every component is high-precision CNC-machined and surface-finished, featuring self-locking drive mechanisms and wear-resistant brass string posts fitted accurately into the housing. Sealed with Schaller special grease, these maintenance-free tuning machines are built for maximum durability.
Featuring the innovative stepped M6 flanged washer with a 0.4 in (10 mm) base diameter, this machine head mounts effortlessly and eliminates tilting moments without requiring stepped headstock drilling. It shares identical mounting dimensions with its predecessor for straightforward drop-in replacement.
| Brand | Schaller |
| Model | M6 135 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight per Machine Head (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) |
| Button Bore Hole | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat |
| Flanged Washer Diameter | 0.39 in (10 mm) |
| Product Weight | 0.13 lb |
| Post Material | Brass |
| Lubrication | Permanent Special Grease |




















