Schaller M6 90 Guitar Tuning Machine

The Schaller M6 90 guitar tuning machine represents precision engineering with a refined 1:18 gear ratio, delivering ultra-smooth and accurate tuning performance. All structural components are CNC-machined, surface-finished, and driven by a self-locking mechanism that guarantees consistent tuning stability.
Featuring high-grade brass string posts fitted with precision into the housing, these tuners ensure zero play and long-term wear resistance. The innovative stepped M6 flanged washer reliably centers the string post without requiring stepped peghead drilling, eliminating tilting torque and reducing stress on mounting components.
Permanently lubricated with Schaller special grease, these sealed tuners remain completely maintenance-free throughout their operational life. They match the exact installation footprint of predecessor models, allowing seamless retrofitting without guitar headstock modifications.
Gear Ratio
1:18
Weight
0.79 lb
Button Hole Diameter
0.17 in (4.2 mm with 3.6 mm drive flat)
Post Material
High-Grade Brass
Manufacturing
Precision CNC-Machined
Lubrication
Schaller Special Grease (Permanently Lubricated)
Mounting Compatibility
Direct Replacement for Standard M6 90 Footprint