Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 sets a high standard for closed tuning machines, featuring a refined 1:18 gear ratio that delivers precise and velvety-smooth tuning response. Every component is CNC-machined to exacting tolerances, surface-finished for durability, and equipped with a self-locking drive mechanism for stable, sensitive adjustment.
Crafted with premium brass string posts precision-fitted into the housing, these tuners ensure optimal wear resistance and maximum tuning stability. The innovative stepped M6 flanged washer facilitates seamless installation by accurately centering the string post via the banjo bolt, eliminating the need for stepped headstock drilling and relieving pressure from mounting screws.
Engineered for long-term reliability, each closed housing comes permanently lubricated with Schaller special grease, rendering the unit completely maintenance-free. With identical mounting dimensions to its legacy predecessor, this tuning machine provides a direct drop-in replacement without requiring headstock modifications.
| Gear Ratio | 1:18 |
| String Post Hole Diameter | 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Weight per Unit 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) including banjo bolt |
| Product Weight | 0.79 lb (0.36 kg) |
| Post Material | Brass |
| Lubrication | Permanently lubricated with Schaller special grease |
| Brand | Schaller |
| Series | M6 Series |
| Model Number | 1005 |
| Mounting Type | 90-degree fixing lug |
