Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine features a refined 1:18 gear ratio that delivers exceptional precision, smooth operation, and tuning stability. Built with CNC-machined components and surface finishes, it incorporates a self-locking drive mechanism for even, sensitive adjustments.
Crafted with premium brass string posts fitted directly into the housing, this closed tuning machine ensures wear-free longevity. It is permanently lubricated with Schaller special grease, rendering the internal mechanism completely maintenance-free.
Featuring the stepped M6 collar washer with a 0.39-inch (10 mm) base diameter, the tuner centers the post reliably via the threaded bushing without requiring stepped headstock drilling. This design eliminates tilting moments and relieves mechanical pressure on mounting screws and string posts.
| Brand | Schaller |
| Model | M6 90 |
| SKU | 1005 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Material | Brass, Metal |
| Lubrication | Maintenance-free Schaller Special Grease |
| Single Tuner Weight 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 threaded bushing |
| Button Bore Hole | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat |
| Product Weight | 0.79 lb |
