Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers precision and tuning comfort with an improved 1:18 gear ratio. Designed to set the standard for closed tuning machines, it combines classic engineering with modern refinements for high performance.
Precision CNC-machined components and high-grade brass string posts provide smooth operation, wear-free durability, and tuning stability. Each closed machine is permanently lubricated with Schaller special grease for maintenance-free reliability.
Featuring the stepped M6 flanged washer, this tuner eliminates tilting torque and ensures solid centering without requiring stepped headstock drilling. It maintains identical installation dimensions to its predecessor for direct replacement.
| Brand | Schaller |
| Series | M6 Series |
| Product Type | Guitar Tuning Machine |
| 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 Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) flat |
| Post Material | Brass |
| Weight | 0.13 lb |




















