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. Setting the global standard for closed-type tuning machines, this model features high-precision CNC-machined components with a self-locking drive to ensure smooth, delicate, and stable tuning.
Crafted with premium brass string posts fitted directly into the housing, the M6 90 maximizes tuning stability while eliminating mechanical wear. The innovative stepped M6 flanged washer centers the string post securely through the banjo bolt, removing tilt moment, protecting against shaft pressure, and eliminating the need for stepped peghead bore holes.
Permanently lubricated with specialized Schaller grease for completely maintenance-free operation, the M6 90 shares identical installation dimensions with its predecessor model for seamless drop-in replacement on electric and acoustic guitars without body or headstock modifications.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Button Bore Hole | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat |
| 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 | 0.13 lb |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
