Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine represents high-precision engineering with an optimized 1:18 gear ratio, delivering velvet-smooth and exact tuning stability. Originally establishing the benchmark for enclosed tuners in 1966, this updated iteration incorporates modern innovations while maintaining classic performance standards.
Crafted with precision CNC machining and surface-treated components, each unit features solid brass string posts meticulously fitted into the housing for maximum wear resistance. All enclosed machine heads are permanently lubricated with specialized grease for completely maintenance-free operation.
An innovative stepped flanged washer centers the string post securely over the banjo bolt, eliminating tilting friction and removing the requirement for stepped peghead bore holes. Featuring identical installation dimensions to its predecessor, it serves as a seamless direct replacement.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| 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) |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| Flanged Washer Diameter | 0.39 in (10 mm) |
| Mounting Screw Size | M2.2 x 9.5 mm |
| Product Weight | 0.79 lb |
