Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine delivers precise tuning stability and smooth operation with an improved 1:18 gear ratio. Designed to preserve the legendary heritage of the original sealed tuner introduced in 1966, this model features high-precision CNC-machined components and a self-locking drive mechanism for uniform, sensitive, and reliable adjustments.
Equipped with premium brass posts fitted into the housing, the M6 135 provides exceptional durability and wear resistance. The specialized step flanged washer centers the string post reliably via the hollow screw and eliminates tilt torque without requiring a stepped headstock hole, protecting the assembly against mechanical stress.
Permanently lubricated with Schaller special grease for maintenance-free performance, the M6 135 retains the exact installation dimensions of its predecessor for a seamless drop-in replacement. It is fully compatible with standard headstock configurations and locking post upgrades.
| Brand | Schaller |
| Model | M6 135 |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| String Post Material | Brass |
| Button Bore Diameter | 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Step Flanged Washer Diameter | 0.39 in (10 mm) |
| Mounting Screw Size | M2.2 x 9.5 |
| Lubrication | Schaller special grease (maintenance-free) |
| Product Weight | 0.79 lb |
