Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine delivers renowned tuning stability and refined performance with an advanced 1:18 gear ratio. Designed to preserve the legendary heritage of the original 1966 design, this enclosed tuning machine offers velvety-smooth action, self-locking drive mechanics, and exceptional precision across demanding playing situations.
Engineered with premium materials, each unit features precision CNC-machined brass string posts seated securely inside a robust housing to eliminate mechanical play and wear. The integrated step washer aligns the string post through the banjo bolt without requiring stepped headstock drilling, absorbing string tension and preventing tipping torque.
With permanent Schaller internal lubrication, these closed machine heads remain completely maintenance-free over their entire lifespan. The installation dimensions match legacy specifications exactly, allowing seamless retrofitting and upgrade on solid and slotted headstocks without modification.
| Brand | Schaller |
| Model | M6 135 |
| Series | M6 Series |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Peg Hole Diameter | 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Weight per Single Tuner with Button (Small/Large) | Metal: 1.27 oz / 1.34 oz (36 g / 38 g); Perloid: 1.06 oz / 1.09 oz (30 g / 31 g); Ebony: 1.06 oz / 1.09 oz (30 g / 31 g) |
| Lubrication | Permanent Special Grease (Maintenance-Free) |
| Mounting Screw Specification | M2.2 x 9.5 |
