Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine sets an industry standard for precision tuning and reliability. Featuring an advanced 1:18 gear ratio, it delivers velvety-smooth, accurate tuning alongside high-grade CNC-machined components engineered for self-locking drive stability.
Crafted with premium brass posts fitted precisely into the housing, this closed tuner guarantees maximum tuning stability, wear-free performance, and maintenance-free operation thanks to Schaller special grease lubrication.
Equipped with an innovative stepped M6 flanged washer, it centers the string post securely without requiring a stepped headstock bore, eliminating tilting torque and reducing mechanical stress.
| Brand | Schaller |
| Model | M6 135 |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| Post Material | High-Grade Brass |
| Manufacturing | Precision CNC-Machined |
| Lubrication | Schaller Special Grease (Permanently Lubricated) |
| Product Weight | 0.13 lb |
| Single Tuner Weight with Button (Small/Large) | Metal (0.08 lb / 0.08 lb), Perloid (0.07 lb / 0.07 lb), Ebony (0.07 lb / 0.07 lb) including banjo bolt |
| Button Bore Hole | 0.17 in diameter with 0.14 in driving surface |




















