Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine sets a benchmark for enclosed tuners, featuring an upgraded 1:18 gear ratio for velvety smooth and precise tuning accuracy. Every component is CNC-machined to exact tolerances and surface-finished to ensure uniform, sensitive, and stable operation.
Engineered for enduring performance, the string posts are crafted from high-grade brass and fitted precisely into the housing to maximize tuning stability and eliminate wear. All enclosed gear units are permanently lubricated with Schaller special grease, making them completely maintenance-free.
Featuring the innovative stepped M6 flanged washer, this tuner allows straightforward installation while keeping the post solidly centered without requiring stepped peghead holes. It shares identical mounting dimensions with its predecessor model, allowing seamless drop-in replacement without instrument modification.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Model | M6 135 |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Button Bore Hole | 0.17 in diameter with 0.14 in drive flat |
| Single Tuner Weight (Small/Large) | Metal (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including hollow screw |
| Product Weight | 0.79 lb |
| Mounting Hardware Included | Hollow screws, flanged washers, M2.2 x 9.5 mm mounting screws |




















