Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 sets a benchmark in guitar tuning technology, featuring a precision 1:18 gear ratio for smooth, velvety, and exact tuning response. Originally establishing the standard for enclosed tuning machines in 1966, this updated design incorporates refined engineering for modern performance.
Crafted with CNC-machined components and high-grade brass string posts fitted directly into the housing, these tuners deliver maximum tuning stability and wear-free operation. The enclosed housing is permanently lubricated with Schaller special grease to remain completely maintenance-free over its entire lifespan.
Featuring the innovative stepped M6 flanged washer, installation eliminates the need for stepped headstock peg holes while ensuring solid, centered alignment. With identical mounting dimensions to predecessor models, it provides direct, seamless replacement on compatible instruments.
| Gear Ratio | 1:18 |
| Weight per Single Tuner with Button (Small/Large) | Metal (0.08 lb / 0.08 lb), Perloid (0.07 lb / 0.07 lb), Ebony (0.07 lb / 0.07 lb) including banjo bolt |
| Button Borehole | 0.17 in diameter with 0.14 in driving surface |
| Product Weight | 0.79 lb |
| Brand | Schaller |
| Series | M6 Series |
| Post Material | Brass |
| Lubrication | Permanently lubricated with Schaller special grease |
