Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 represents a legacy of precision tuning engineering, setting high industry standards for closed guitar machine heads. Engineered with an upgraded 1:18 gear ratio, it provides a velvety-smooth, highly sensitive, and remarkably stable tuning process. Each component is high-precision CNC-machined and surface-finished, featuring a self-locking drive that prevents unwanted slipping.
Crafted with premium brass string posts precisely fitted into the housing, this machine head guarantees maximum tuning stability and wear-free performance. The specialized step-collar flanged washer centers the string post securely over the banjo bolt, eliminating tilt and removing stress from both the post and the rear mounting screw without requiring stepped peghead drilling.
Featuring the exact installation dimensions of its predecessor, the M6 135 allows for seamless, direct-replacement installation on compatible instruments. Every enclosed unit is permanently lubricated with Schaller special grease, delivering fully maintenance-free reliability over a lifetime of play.
| Gear Ratio | 1:18 |
| Weight per Single Tuner with Button (Small/Large) | Metal (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including banjo bolt |
| Button Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Brand | Schaller |
| Series | M6 Series |
| Product Type | Guitar Tuning Machine |
| String Post Material | High-grade Brass |
| Manufacturing | CNC-machined |
| Lubrication | Schaller special grease (maintenance-free) |
| Mounting Screw Size | M2.2 x 9.5 |
| Weight | 0.79 lb |
