Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine sets an industry standard for closed tuning machines, combining timeless design with modern engineering. Featuring a refined 1:18 gear ratio, it provides smooth, precise, and highly sensitive tuning stability. All components are CNC-machined to exacting tolerances, ensuring uniform operation and long-lasting durability.
Equipped with high-grade brass posts fitted precisely into the housing, this machine head prevents wear and ensures maximum tuning retention. The innovative stepped M6 flanged washer centers the string post reliably via the threaded bushing without requiring a stepped headstock bore, effectively eliminating tilting torque and reducing stress on mounting components.
Permanently lubricated with Schaller special grease, the enclosed mechanism remains completely maintenance-free. Designed to match the exact mounting dimensions of its predecessor, the M6 135 allows for seamless, direct replacement on compatible instruments without requiring headstock modifications.
| Brand | Schaller |
| Series | M6 Series |
| Model | M6 135 |
| 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 Individual Tuner (Metal Small / Large) | 1.27 oz / 1.34 oz (36 g / 38 g) |
| Weight per Individual Tuner (Perloid / Ebony Small / Large) | 1.06 oz / 1.09 oz (30 g / 31 g) |
| Mounting Screws Included | M2.2 x 0.37 in (M2.2 x 9.5 mm) |
| Total Product Weight | 0.79 lb (0.36 kg) |
