Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers outstanding precision and tuning comfort with its refined 1:18 gear ratio. Originally setting the benchmark for enclosed tuners in 1966, this updated design combines time-tested reliability with modern CNC manufacturing and advanced engineering.
Crafted with premium high-grade brass string posts fitted seamlessly into the housing, each unit guarantees optimal tuning stability and wear-free performance. An innovative stepped flanged washer centers the post securely through the threaded bushing, eliminating tilt and removing mechanical strain from both the post and mounting screws without requiring stepped headstock holes.
Featuring permanently lubricated internal gearing with Schaller special grease, these maintenance-free tuning machines offer smooth, velvety action and self-locking drive precision. Their identical mounting footprint allows for straightforward drop-in replacement on existing instruments without woodwork or modifications.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Manufacturing | CNC-machined |
| Lubrication | Permanently lubricated with Schaller special grease (maintenance-free) |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with driving flat 0.14 in (3.6 mm) |
| Weight per Single Tuner with Button (Small/Large) | Metal: 1.27 oz / 1.34 oz (36 g / 38 g); Perloid: 1.06 oz / 1.09 oz (30 g / 31 g); Ebony: 1.06 oz / 1.09 oz (30 g / 31 g) |
| Product Weight | 0.79 lb |
