Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine delivers outstanding precision and tuning comfort with an improved 1:18 gear ratio. All components are CNC-machined, surface-finished, and equipped with a self-locking drive that provides consistent, smooth, and stable tuning.
Crafted with premium high-grade brass posts precisely fitted into the housing, this tuning machine provides maximum tuning stability and wear-free performance. Closed enclosures are permanently lubricated with Schaller special grease for completely maintenance-free operation.
Featuring the innovative stepped M6 flanged washer with a 0.4 in (10 mm) diameter, installation is simplified by reliably centering the string post without requiring a stepped peghead bore. This design eliminates tilting torque and relieves mechanical stress on both the post and rear mounting screw.
| Brand | Schaller |
| Model | M6 135 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Post Material | High-Grade Brass |
| Product Weight | 0.8 lb |
| Weight per Single Unit with Button | Metal (1.3 oz / 1.3 oz), Perloid (1.1 oz / 1.1 oz), Ebony (1.1 oz / 1.1 oz) including banjo bolt |
| Button Bore Hole | 0.17 in diameter with 0.14 in drive flat |
| Included Banjo Bolts | 6 |
| Included Flanged Washers | 6 |
| Included Mounting Screws | 6 x M2.2 x 9.5 mm |


















