Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 sets a high standard for closed guitar tuning machines with an advanced 1:18 gear ratio for smooth, precise, and dependable tuning. Built with CNC-machined components and high-grade brass string posts fitted precisely into the housing, it ensures exceptional tuning stability, low wear, and maintenance-free operation via specialized permanent lubrication.
Featuring the innovative stepped M6 flanged washer, this tuning machine centers the string post securely through the threaded bushing without requiring a stepped headstock hole. This design eliminates tilting moments and relieves mechanical pressure from both the post and the rear mounting screw.
With installation dimensions identical to its predecessor, the M6 90 allows for seamless direct replacement on compatible instruments without headstock modifications.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Model Series | M6 Series |
| Model | M6 90 |
| Gear Ratio | 1:18 |
| String Post Material | High-Grade Brass |
| Button Bore Hole | 0.17 in diameter with 0.14 in drive flat |
| Product Weight | 0.79 lb |
