Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 tuning machine series sets a standard for closed guitar tuners, featuring an upgraded 1:18 gear ratio that delivers exceptional precision, tuning comfort, and velvety smooth operation. Designed with identical installation dimensions to its predecessor, it serves as a seamless replacement without requiring headstock modifications.
Crafted with CNC-machined components and high-grade brass posts, these tuners ensure lasting wear resistance and reliable tuning stability. The closed housing design is permanently lubricated with Schaller special grease, making the entire mechanism completely maintenance-free.
Equipped with an innovative stepped M6 flanged washer, the system centers the string post securely through the banjo bolt and eliminates tilting torque without requiring a stepped headstock bore. This robust construction absorbs pressure evenly across the mounting screw and post for dependable performance.
| Brand | Schaller |
| Model | 1005 |
| Series | M6 Series |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Lubrication | Permanently lubricated with Schaller special grease |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| Weight per Single Tuner with Button (Small/Large) | Metal (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) |
| Product Weight | 0.79 lb |
