Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine sets an industry standard with its refined 1:18 gear ratio, delivering precise, velvety-smooth tuning and exceptional stability. Precision CNC-machined components and surface-finished parts work alongside a self-locking drive to ensure uniform, sensitive adjustment without slippage.
Engineered with premium brass string posts carefully fitted into the housing, this tuning machine provides maximum wear resistance and sustained pitch accuracy. The innovative stepped M6 flanged washer with a 0.39 in (10 mm) diameter centers the string post securely through the banjo bolt, preventing tipping torque and eliminating the need for stepped headstock drilling.
Featuring permanently lubricated internal components with Schaller special grease, each closed-housing tuner is completely maintenance-free. Built to the exact mounting dimensions of its predecessor, it serves as a seamless upgrade or direct replacement for standard guitar headstocks.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Model Number | 1002 |
| Gear Ratio | 1:18 |
| Weight | 0.79 lb |
| Weight per Single Tuner (Small/Large) | Metal (1.27 oz / 1.34 oz), Pearloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including banjo bolt |
| Button Borehole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| Included Banjo Bolts | 6x (not required/included for slotted headstock posts 0.58 in) |
| Included Flanged Washers | 6x |
| Included Mounting Screws | 6x M2.2 x 0.37 in |
| String Post Material | Brass |
| Lubrication | Permanently lubricated with Schaller special grease |
