Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine delivers refined tuning precision and velvety-smooth operation with its advanced 1:18 gear ratio. As an evolution of the industry-standard enclosed tuner design introduced in 1966, this modern iteration pairs CNC-machined components with high-grade brass string posts fitted directly into the housing for maximum tuning stability and wear resistance.
Featuring the innovative stepped M6 flanged washer, this tuning machine reliably centers the string post via the banjo bolt, eliminating tipping torque and relieving lateral pressure on both the post and rear mounting screw without requiring stepped peghead drilling. All closed housings are permanently lubricated with specialized Schaller grease for lifelong, maintenance-free performance.
Designed with standard mounting dimensions identical to its predecessor, the M6 135 serves as a direct drop-in replacement without instrument modifications. Its self-locking drive and premium construction ensure reliable, delicate pitch adjustments across extensive playing conditions.
| Brand | Schaller |
| Model | M6 135 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Housing Type | Sealed / Enclosed |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
| Button Bore Diameter | 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Mounting Screw Size | M2.2 x 9.5 |
| Product Weight | 0.79 lb |
