Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine sets a benchmark in tuning precision and reliability. Engineered with a refined 1:18 gear ratio, it delivers velvety-smooth action and accurate intonation adjustments for any performance level.
Every component is CNC-machined to precise tolerances, featuring premium brass posts fitted into sealed housings. Permanently lubricated with specialized grease, these maintenance-free tuners offer wear-resistant operation and outstanding tuning stability.
The innovative stepped collar washer ensures effortless installation and solid post centering without requiring stepped headstock holes. Sharing identical mounting dimensions with its predecessor, it serves as a direct, modification-free upgrade for standard instruments.
| Brand | Schaller |
| Model | M6 135 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Post Material | High-Grade Brass |
| Lubrication | Permanently lubricated with Schaller special grease |
| 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 | 0.17 in diameter with 0.14 in drive flat |
| Mounting Screws Included | M2.2 x 9.5 mm |
| Collar Washer Diameter | 0.39 in |
| Overall Product Weight | 0.13 lb |


















