Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers precise tuning comfort and reliable performance with an upgraded 1:18 gear ratio. Designed with CNC-machined components and premium brass string posts, it ensures smooth operation, self-locking drive precision, and long-lasting tuning stability.
Equipped with an innovative stepped M6 flanged washer, this tuner allows effortless installation and solid centering without requiring a stepped headstock bore. The design effectively eliminates tilting torque while reducing stress on both the post and rear mounting screw.
Permanently lubricated with Schaller special grease for maintenance-free durability, the M6 90 features identical mounting dimensions to previous generations for direct replacement and seamless upgrades.
| Gear Ratio | 1:18 |
| 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 |
| Button Bore Hole | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat |
| Product Weight | 0.79 lb (0.36 kg) |
| Brand | Schaller |
| Series | M6 Series |
| Product Type | Guitar Tuning Machine |
| String Post Material | Brass |
| Lubrication | Permanently lubricated with Schaller special grease |
