Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine represents the legendary standard for enclosed tuners, engineered with precision CNC manufacturing and an upgraded 1:18 gear ratio for smooth, accurate tuning stability. High-grade brass string posts and self-locking drive mechanics ensure lasting wear-free performance and exceptional pitch retention.
Featuring Schaller's innovative stepped flanged washer, this tuning machine aligns effortlessly on standard 10 mm peghead holes without requiring stepped drilling. This design absorbs lateral tension, eliminates tilt torque, and relieves strain on both the string post and rear mounting screws.
Permanently lubricated with Schaller special grease for maintenance-free operation, the M6 90 shares the exact mounting dimensions of its predecessor for direct, drop-in replacement on electric and acoustic guitar headstocks.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| String Post Material | High-Grade Brass |
| Weight | 0.8 lb |
| Weight per Single Tuner with Button (Small/Large) | Metal (1.3 oz / 1.3 oz), Perloid (1.1 oz / 1.1 oz), Ebony (1.1 oz / 1.1 oz) including hollow screw |
| Button Bore Hole | 0.2 in diameter with 0.1 in driving flat |
| Lubrication | Permanently lubricated with Schaller special grease |
