Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine delivers outstanding precision and smooth tuning comfort with an advanced 1:18 gear ratio. CNC-machined components and premium brass string posts ensure rock-solid tuning stability, wear-free performance, and a velvety smooth feel.
Featuring the innovative stepped M6 flanged washer, this tuning machine simplifies installation by reliably centering the string post without requiring a stepped headstock hole. The self-locking drive and internal permanent Schaller special grease lubrication provide maintenance-free longevity and eliminate tilt torque.
Designed with the exact mounting dimensions of its iconic predecessor, the M6 135 allows for seamless drop-in replacement without instrument modifications. It combines legendary craftsmanship with modern engineering for professional-grade acoustic and electric guitar performance.
| 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 hollow screw |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| Product Weight | 0.79 lb |
| Post Material | Brass |
| Lubrication | Permanent Special Grease |
| Series | M6 Series |




















