Schaller M6 90 Guitar Tuning Machine

The Schaller M6 90 guitar tuning machine delivers uncompromised precision and smooth operation with an upgraded 1:18 gear ratio. Designed as an evolution of the industry-standard enclosed tuner introduced in 1966, this model retains identical mounting dimensions to its predecessor for direct, modification-free installation.
Engineered with high-precision CNC-machined components and wear-free brass posts, each tuner ensures exceptional tuning stability and consistent feel. The enclosed housing features permanent Schaller special grease lubrication, providing completely maintenance-free performance throughout its lifespan.
An innovative stepped M6 flanged washer reliably centers the string post via the banjo bolt, eliminating the need for a stepped peghead bore while preventing tilt and relieving mechanical stress from both the post and rear mounting screws.
Brand
Schaller
Model
M6 90
Product Type
Guitar Tuning Machine
Gear Ratio
1:18
Post Material
Brass
Lubrication
Permanently lubricated with Schaller special grease
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
0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat
Product Weight
0.79 lb