Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 tuning machine series delivers exceptional tuning precision and stability with an enhanced 1:18 gear ratio. All components are high-precision CNC-machined and surface-finished, utilizing a self-locking drive mechanism to ensure uniform, sensitive, and reliable operation across all playing styles.
Equipped with high-grade brass posts precision-fitted into the housing, these tuners provide maximum wear resistance and long-lasting performance. The innovative stepped M6 flanged washer reliably centers the string post without requiring a stepped headstock hole, eliminating tipping moment and relieving mechanical stress.
Featuring permanent lubrication with Schaller specialized grease, these closed-type tuning machines operate completely maintenance-free. With identical installation dimensions to their classic predecessor models, they allow for straightforward direct replacement on solid or slotted headstock instruments.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| String Post Material | High-Grade Brass |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) flat drive |
| Single Tuner Weight (Metal Buttons) | Small: 1.27 oz (36 g) / Large: 1.34 oz (38 g) |
| Single Tuner Weight (Perloid/Ebony Buttons) | Small: 1.06 oz (30 g) / Large: 1.09 oz (31 g) |
| Product Weight | 0.79 lb |
| Mounting Screws Included | M2.2 x 9.5 mm |
| Lubrication | Permanently lubricated with Schaller special grease |
