Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 sets a standard for closed tuning machines with its 1:18 gear ratio, delivering smooth and precise tuning performance. All components are high-precision CNC-machined and surface-finished to ensure even, delicate, and stable tuning through a self-locking drive mechanism.
Crafted with premium brass string posts precisely fitted into the housing, these tuners provide maximum tuning stability and wear-free operation. The enclosed housing comes permanently lubricated with Schaller special grease for completely maintenance-free longevity.
Featuring the innovative stepped M6 flanged washer with a 0.39-inch diameter base, this design securely centers the string post without requiring a stepped headstock hole. It shares identical mounting dimensions with previous M6 models for effortless, modification-free drop-in replacement.
| Brand | Schaller |
| Series | M6 Series |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Single Tuner Weight (Small/Large Button) | Metal (1.27 oz / 1.34 oz), Pearloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including hollow screw |
| Button Bore Hole | Diameter 0.17 in with 0.14 in drive flat |
| Flanged Washer Base Diameter | 0.39 in |
| Mounting Screw Size | M2.2 x 9.5 mm |
