Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 sets the benchmark for enclosed guitar tuning machines with its high-precision 1:18 gear ratio, delivering velvet-smooth and exact tuning stability. Built with CNC-machined components and high-grade brass string posts, it ensures wear-free longevity and reliable performance for demanding players.
Featuring the innovative stepped M6 flanged washer with a 0.39-inch diameter base, this tuner eliminates the need for stepped headstock boreholes. It self-centers the string post securely through the threaded bushing, counteracting tilting force and relieving mechanical stress on both the post and mounting screw.
Designed with identical installation dimensions to its classic predecessor, the M6 90 offers seamless retrofitting without guitar modifications. Each closed housing is permanently lubricated with Schaller special grease for completely maintenance-free operation.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| Weight | 0.79 lb |
| Weight per Single Tuner with Button (Small/Large) | Metal (1.27 oz / 1.34 oz), Pearloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including threaded bushing |
| Button Borehole | 0.17 in diameter with 0.14 in driving surface |
| Post Material | Brass |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
