Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers precise and smooth tuning performance with its advanced 1:18 gear ratio. Engineered with high-precision CNC machining and high-grade brass string posts, it ensures maximum tuning stability, self-locking drive engagement, and exceptional wear resistance.
Featuring the innovative stepped M6 flanged washer, this closed machine head centers the string post securely through the banjo bolt without requiring a stepped peghead bore. This design eliminates tilting torque and relieves mechanical stress from both the post and the rear mounting screw.
Permanently lubricated with Schaller special grease for maintenance-free operation, the M6 90 shares identical installation dimensions with its predecessor model, allowing seamless replacement and straightforward installation across compatible headstocks.
| Brand | Schaller |
| Series | M6 Series |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Weight per Single Tuner 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 | Diameter 0.17 in (4.2 mm) with drive flat 0.14 in (3.6 mm) |
| Item Weight | 0.13 lb |
