Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 sets the benchmark for enclosed guitar tuning machines, offering flawless functionality combined with an improved 1:18 gear ratio for precise and smooth tuning. Every component is CNC-machined with high accuracy and finished to ensure consistent, sensitive, and stable performance through its self-locking drive mechanism.
Engineered for maximum durability and tuning stability, each string post is crafted from premium brass and precision-fitted into the housing. All enclosed tuners are permanently lubricated with Schaller special grease, making them completely maintenance-free over their entire lifespan.
Featuring the innovative stepped M6 flanged washer, this tuner allows for straightforward installation and permanent solid centering of the post without requiring stepped peghead holes. The M6 90 maintains identical installation dimensions to its predecessor, ensuring hassle-free drop-in replacement without instrument modifications.
| 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 hollow screw |
| Button Borehole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| Brand | Schaller |
| Series | M6 Series |
| Product Type | Guitar Tuning Machine |
| String Post Material | Brass |
| Lubrication | Permanently lubricated with Schaller special grease |
| Item Weight | 0.79 lb |


















