Schaller M6 135 Tuning Machine
The Schaller M6 135 offers state-of-the-art guitar tuning with an advanced 1:18 gear ratio for velvety smooth, highly precise adjustments. Engineered as an evolution of the legendary enclosed tuner design introduced in 1966, it features high-precision CNC-machined components and a self-locking drive mechanism that guarantees smooth, sensitive, and stable tuning.
Crafted with premium brass string posts precisely fitted into the housing, this tuning machine delivers maximum tuning stability and wear resistance. An innovative stepped M6 flanged washer reliably centers the string post via the banjo bolt with a 0.4 in collar, eliminating tilt and removing mechanical pressure from both the post and rear mounting screw without requiring stepped peghead holes.
Permanently lubricated with specialized Schaller grease for completely maintenance-free operation, the M6 135 maintains identical installation dimensions to its predecessor for direct, drop-in replacement. Each set includes mounting screws and flanged washers designed to accommodate solid, slotted, or locking configurations.
| Brand | Schaller |
| Model | M6 135 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| 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) |
| Button Bore Hole | 0.17 in diameter with 0.14 in drive flat |
| Mounting Screws Included | M2.2 x 0.37 in |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
