Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine offers precision engineering and reliable performance for electric and acoustic guitars. Featuring an advanced 1:18 gear ratio, it provides a smooth, precise tuning experience with maximum tuning stability.
Precision CNC-machined components with high-grade surface finishing and a self-locking drive ensure velvet-smooth operation. Premium brass string posts are fitted accurately into the housing, while permanent lubrication with Schaller special grease guarantees a completely maintenance-free lifespan.
The innovative stepped M6 flanged washer centers the string post securely through the threaded bushing without requiring stepped headstock drilling, effectively eliminating tilting torque and reducing pressure on both the post and mounting screw.
| Gear Ratio | 1:18 |
| 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 threaded bushing |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with drive flat 0.14 in (3.6 mm) |
| Product Weight | 0.79 lb |
| Brand | Schaller |
| Manufacturer | Schaller GmbH |
| Series | M6 Series |
| String Post Material | Brass |
| Lubrication | Schaller Special Grease (Maintenance-Free) |




















