Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine sets a benchmark for enclosed tuning mechanisms, combining high-precision CNC manufacturing with refined aesthetic elegance. Engineered with an upgraded 1:18 gear ratio, it delivers ultra-smooth, fine-tuned calibration and exceptional tuning stability. All string posts are meticulously crafted from premium brass and precision-fitted into the housing to eliminate wear and ensure enduring reliability.
Featuring the innovative stepped M6 flanged washer, this tuning machine simplifies installation while providing robust structural support. The stepped base with a 0.39 in diameter self-centers the string post through the hollow screw, removing the need for a stepped headstock bore. This mechanism absorbs lateral tilt and pressure from both the post and mounting screw, ensuring optimal performance.
Built for straightforward upgrades, the M6 135 shares identical mounting dimensions with its predecessor model for hassle-free direct replacement. Every enclosed mechanism is permanently lubricated with Schaller specialized grease for completely maintenance-free operation across years of play.
| Brand | Schaller |
| Model | 1002 |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
| Button Bore Hole Diameter | 0.17 in (with 0.14 in drive flat) |
| Stepped Washer Diameter | 0.39 in |
| Mounting Screw Size | M2.2 x 0.37 in |
| Single Tuner Weight (Metal Button) | 1.27 oz / 1.34 oz |
| Single Tuner Weight (Perloid Button) | 1.06 oz / 1.09 oz |
| Single Tuner Weight (Ebony Button) | 1.06 oz / 1.09 oz |
| Product Weight | 0.79 lb |




















