Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine delivers refined performance and tuning comfort, utilizing an improved 1:18 gear ratio for precise adjustments. Built upon the original 1966 closed-type architecture, every component is CNC-machined and finished for smooth, friction-free operation.
Solid brass posts are fitted into the housing to ensure optimal tuning stability and wear resistance over extended use. All closed tuners feature permanent lubrication with specialized grease, guaranteeing maintenance-free performance without requiring re-oiling.
The stepped M6 flanged washer centers the string post through the banjo bolt to prevent tilt torque and eliminate the need for stepped headstock drilling. Standardized mounting dimensions match previous M6 135 iterations for direct replacement without instrument modification.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Model | M6 135 |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| Weight | 0.13 lb |
| Housing Type | Enclosed |
| Post Material | Brass |
| Lubrication | Permanently Lubricated |
| Button Bore Diameter | 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |




















