Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine represents high-precision engineering with an optimized 1:18 gear ratio for smooth, velvety tuning and exceptional pitch stability. High-grade brass string posts and CNC-machined internal components ensure frictionless, wear-free performance across diverse playing conditions.
Equipped with Schaller's innovative stepped flanged washer, this tuner aligns the post cleanly through the hollow bolt and removes the need for stepped peghead holes. This design effectively eliminates tilting torque and relieves mechanical stress from both the post and the rear mounting screw.
Permanently lubricated with specialized grease, the sealed housing provides maintenance-free reliability. The M6 90 maintains the identical mounting dimensions of its classic predecessor for a direct, drop-in replacement on compatible headstocks.
| Brand | Schaller |
| Series | M6 Series |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Weight per Single Tuner | 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) |
| Product Weight | 0.79 lb |
| Included Items | 6 hollow bolts, 6 stepped flanged washers, 6 mounting screws (M2.2 x 9.5 mm) |
