Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 sets a high standard for closed guitar tuning machines with a refined 1:18 gear ratio that ensures velvet-smooth and precise tuning. Built with high-precision CNC machining and high-grade brass posts fitted seamlessly into the housing, it delivers uncompromising tuning stability and zero-wear durability.
Featuring the innovative stepped M6 flanged washer, this tuning machine simplifies installation by reliably centering the string post via the banjo bolt. This eliminates tilting movement and relieves stress from both the post and the rear mounting screw without requiring stepped headstock holes.
All components are permanently lubricated with Schaller special grease for a completely maintenance-free lifespan. Sharing identical mounting dimensions with its predecessor, it serves as a direct drop-in replacement that requires no modifications to the instrument headstock.
| Brand | Schaller |
| Model | M6 135 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Weight per Machine | 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 driving flat |
| Mounting Screws | M2.2 x 0.37 in |
| Lubrication | Schaller Special Grease (Permanent) |
| Product Weight | 0.79 lb |
