Schaller M6 90 Guitar Tuning Machine

The Schaller M6 90 guitar tuning machine represents precision engineering and refined performance, setting the standard for closed tuners. Featuring an advanced 1:18 gear ratio, it ensures exceptionally smooth, fine, and stable tuning comfort across all playing conditions. High-precision CNC-machined components and surface-finished parts guarantee durable, self-locking operation without backlash.
Crafted with premium brass string posts precisely fitted into the housing, this machine head provides maximum tuning stability and virtually wear-free performance. The innovative stepped M6 flanged washer ensures straightforward installation and reliable, permanent centering of the post via the banjonut, eliminating tilting stress on mounting hardware and removing the need for stepped headstock drilling.
Permanently lubricated with Schaller special grease, these sealed tuners are completely maintenance-free and built for longevity. With identical mounting dimensions to its classic predecessor, the M6 90 offers a seamless drop-in upgrade or replacement for modern and vintage instruments alike.
Brand
Schaller
Model
M6 90
SKU
10050220.02.35
Gear Ratio
1:18
Post Material
High-Grade Brass
Housing Type
Sealed / Closed
Lubrication
Schaller Special Grease (Maintenance-Free)
Button Bore Hole
0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat
Weight per Single Tuner with Button (Small / Large)
Metal: 1.27 oz / 1.34 oz (36 g / 38 g), Perloid: 1.06 oz / 1.09 oz (30 g / 31 g), Ebony: 1.06 oz / 1.09 oz (30 g / 31 g) including banjonut
Product Weight
0.79 lb