Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine delivers outstanding precision and smooth tuning comfort with an upgraded 1:18 gear ratio. Designed to set the standard for closed tuners, all components are CNC-machined and finished to ensure velvet-smooth, stable, and wear-free performance.
High-grade brass string posts fit precisely into the housing, while permanent lubrication with specialized grease ensures completely maintenance-free operation. The stepped flanged washer provides dependable shaft centering and simplified headstock mounting without requiring stepped drilling.
Featuring the exact installation dimensions of its classic predecessor, the M6 135 replaces vintage tuners seamlessly without headstock modifications.
| Brand | Schaller |
| Model | M6 135 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Weight per Single Unit (Small / Large Button) | Metal: 1.27 oz / 1.34 oz (36 g / 38 g); Pearloid: 1.06 oz / 1.09 oz (30 g / 31 g); Ebony: 1.06 oz / 1.09 oz (30 g / 31 g) |
| Product Weight | 0.13 lb |
| Lubrication | Permanently lubricated with Schaller special grease |


















