Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine delivers outstanding precision and tuning comfort with an upgraded 1:18 gear ratio. Designed to build on the legendary closed-housing platform established in 1966, it incorporates state-of-the-art manufacturing while maintaining seamless drop-in compatibility with original installation dimensions.
Every component is CNC-machined to exact tolerances, featuring high-grade brass string posts engineered for wear-free durability and maximum tuning stability. The self-locking drive and permanent Schaller grease lubrication ensure completely maintenance-free operation and smooth, reliable mechanical performance.
Equipped with an innovative stepped M6 flanged washer, this tuning machine reliably centers the string post via the banjo bolt with a 0.39 in (10 mm) base step. This design eliminates tilting torque, relieving pressure from both the post and the rear mounting screw without requiring a stepped peghead bore.
| Brand | Schaller |
| Model | M6 135 |
| Product Type | Guitar Tuning Machine |
| 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 Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Post Material | Brass |
| Lubrication | Permanent Special Grease |
| Product Weight | 0.79 lb |
