Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine represents high-precision instrument engineering, offering an advanced 1:18 gear ratio for smooth, accurate tuning. CNC-machined components and premium surface treatments ensure balanced, sensitive operation with outstanding pitch stability.
Equipped with wear-free, precision-fitted brass string posts, each sealed housing contains Schaller special lubricant for permanent, maintenance-free longevity. The stepped M6 flanged washer centers the post securely through the banjo bolt, eliminating tilt and removing stress from mounting screws without requiring stepped headstock drilling.
Featuring the exact mounting dimensions of its classic predecessor, the M6 90 allows for direct replacement on compatible headstocks without instrument modifications.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| Weight per Single Unit with Button | Metal: 1.27 oz / 1.34 oz (36 g / 38 g); Perloid / Ebony: 1.06 oz / 1.09 oz (30 g / 31 g) |
| Lubrication | Permanently lubricated with Schaller special grease |
