Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 sets a high benchmark for sealed guitar tuning machines, offering an upgraded 1:18 gear ratio that delivers precise and smooth tuning stability. Engineered with precision CNC-machined components and high-grade brass string posts, it provides dependable operation and wear-free durability.
Featuring the innovative stepped M6 flanged washer, this tuning machine simplifies installation by reliably centering the string post without requiring a stepped peghead bore. This design eliminates tilting torque and significantly reduces strain on both the string post and rear mounting screws.
Every sealed machine is permanently lubricated with proprietary Schaller special grease for completely maintenance-free performance. Designed to match the exact mounting dimensions of previous iterations, it allows for a direct drop-in replacement without instrument modifications.
| Brand | Schaller |
| Model | M6 135 |
| Gear Ratio | 1:18 |
| Button Bore Diameter | 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Single Unit Weight 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) |
| Mounting Screws | M2.2 x 0.37 in |
| Flanged Washer Diameter | 0.39 in (10 mm) |
| String Post Material | Brass |
| Lubrication | Permanently lubricated with Schaller special grease |
| Product Weight | 0.13 lb |
