Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine sets an industry benchmark for precision, tuning stability, and refined craftsmanship. Engineered with an upgraded 1:18 gear ratio, it ensures smooth and velvet-like operation for effortless micro-adjustments and dependable performance.
Every component is precision CNC-machined and surface-finished to ensure lasting durability and reliable operation. High-grade brass string posts fit flawlessly into the sealed housing, which is permanently lubricated with Schaller special grease for maintenance-free use over years of play.
Featuring the innovative stepped M6 flanged collar, this design self-centers the string post securely through the hollow screw without requiring stepped peghead drilling. It matches the exact installation dimensions of its predecessor for hassle-free upgrades and drop-in replacements.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Model | M6 135 |
| Gear Ratio | 1:18 |
| Weight | 0.79 lb |
| Weight per Single Tuner with Button (Small/Large) | Metal (1.27 oz / 1.34 oz), Pearloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including hollow screw |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with driving flat 0.14 in (3.6 mm) |
| Post Material | High-Grade Brass |
| Lubrication | Permanently lubricated with Schaller special grease |


















