Schaller M6 135 Tuning Machine
The Schaller M6 135 continues the legacy of closed guitar tuning machines with a refined 1:18 gear ratio that delivers exceptional precision, smoothness, and tuning stability. Each component is CNC-machined and finished for consistent operation, driven by a self-locking mechanism and high-grade brass string posts engineered for maximum wear resistance.
Featuring the innovative stepped M6 flanged washer, this tuner simplifies installation while reliably centering the string post via the banjo bolt. This unique design eliminates tilting moments and relieves mechanical stress from both the post and the rear mounting screw without requiring stepped peghead drilling.
Built with identical mounting dimensions to its classic predecessor, the M6 135 allows direct replacement on existing headstocks. Every sealed unit is permanently lubricated with specialized Schaller grease to ensure entirely maintenance-free performance.
| Brand | Schaller |
| Model | M6 135 |
| Series | M6 Series |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| 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 banjo bolt |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Mounting Screws Included | M2.2 x 9.5 |
| Flanged Washer Diameter | 0.39 in (10 mm) |
| Weight | 0.13 lb |
