Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine sets a standard for closed tuning systems, engineered with an advanced 1:18 gear ratio for velvety smooth, precise, and stable tuning comfort. Each component is CNC-machined to exacting tolerances, featuring high-grade brass string posts and permanently lubricated sealed housings for maintenance-free operation.
Equipped with Schaller's innovative stepped flanged washer, this design centers the string post securely through the banjo bolt without requiring stepped headstock drilling. This crucial engineering feature eliminates tilt torque, significantly relieving mechanical stress from both the post and the rear mounting screw.
Designed with identical mounting dimensions to its predecessor, the M6 135 allows for seamless, modification-free retrofitting across compatible headstocks. Premium self-locking internal drives guarantee uniform sensitivity, robust wear resistance, and long-lasting tuning stability.
| Brand | Schaller |
| Manufacturer | Schaller GmbH |
| Series | M6 Series |
| Model | M6 135 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight | 0.79 lb |
| Button Hole | 0.17 in diameter with 0.14 in drive flat |
| Post Material | Brass |
| Lubrication | Permanently lubricated with Schaller special grease |




















