Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine represents high-precision instrument hardware engineered with an upgraded 1:18 gear ratio for smooth, accurate tuning. Building on the legendary sealed design first introduced in 1966, this modern iteration incorporates premium CNC-machined components and self-locking drive mechanisms to ensure reliable pitch stability.
Crafted with premium brass string posts fitted precisely into the housing, this machine head offers durable, wear-free performance. Each sealed unit is permanently lubricated with Schaller special grease for maintenance-free operation and effortless turning action.
Featuring the innovative stepped M6 flanged washer, this tuner allows straightforward installation by centering the string post via the banjo bolt without requiring a stepped headstock bore. The design eliminates tilting torque and reduces mechanical stress on both the string post and rear mounting screw.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Button Bore Hole | 0.17 in diameter with 0.14 in driving surface |
| Weight per Single Unit (Small/Large) | Metal (0.08 lb / 0.08 lb), Pearloid (0.07 lb / 0.07 lb), Ebony (0.07 lb / 0.07 lb) |
| Product Weight | 0.13 lb |
| Lubrication | Permanently lubricated with Schaller special grease |
