Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 represents a refined standard in closed guitar tuning machines, equipped with an enhanced 1:18 gear ratio for precise and smooth tuning control. Engineered with high-precision CNC machining and high-grade brass string posts, it delivers exceptional tuning stability and long-term wear resistance.
Featuring the innovative stepped M6 collar washer with a 0.39 in (10 mm) diameter base, this tuning machine reliably centers the string post through the hollow screw without requiring stepped drilling in the headstock. This design eliminates tilt torque and reduces physical stress on both the post and rear mounting screws.
Permanently lubricated with specialized Schaller grease for maintenance-free operation, the M6 135 maintains identical installation dimensions to its predecessor for direct replacement without instrument modifications.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| Weight per Single Tuner with Button (Small / Large) | Metal (1.27 oz / 1.34 oz), Pearloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including hollow screw |
| Button Bore Hole | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive surface |
| Post Material | Brass |
| Mounting Screws Included | M2.2 x 9.5 |
| Lubrication | Sealed Schaller special grease |
| Product Weight | 0.79 lb |
