Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine sets an industry benchmark for closed-type tuners, combining legendary heritage with modern precision engineering. Featuring an advanced 1:18 gear ratio, it ensures precise, velvet-smooth tuning and exceptional pitch stability. High-grade CNC-machined components and a self-locking drive deliver consistent, delicate adjustments under all playing conditions.
Equipped with wear-free, precision-fitted brass posts, each tuner is permanently lubricated with Schaller special grease for completely maintenance-free operation. The innovative stepped M6 flanged washer centers the string post securely over the hollow screw, removing tilt torque and eliminating the need for a stepped peghead hole.
Designed with dimensions identical to its classic predecessor, the M6 135 allows direct replacement without instrument modification. High-precision manufacturing guarantees maximum durability, reliable centering, and effortless installation across a range of configuration options.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Model | M6 135 |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
| Weight | 0.13 lb |
| Button Borehole | Diameter 0.17 in (4.2 mm) with driving surface 0.14 in (3.6 mm) |
| Flanged Washer Diameter | 0.39 in (10 mm) |
| Single Tuner Weight (Small/Large) | Metal: 1.27 oz / 1.34 oz (36 g / 38 g); Perloid/Ebony: 1.06 oz / 1.09 oz (30 g / 31 g) |




















