Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine delivers outstanding precision and tuning comfort with an upgraded 1:18 gear ratio. Designed with high-precision CNC-machined internal components and a self-locking drive, it guarantees smooth, sensitive, and rock-solid tuning stability for any playing style.
Featuring high-grade brass posts engineered for wear-free durability, all enclosed mechanisms are permanently lubricated with Schaller special grease for completely maintenance-free operation. The innovative stepped M6 flanged washer ensures effortless installation and reliable centering of the string post without requiring stepped headstock drilling.
Sharing identical installation dimensions with its predecessor, the M6 135 allows direct drop-in replacement without instrument modifications. It reduces string post stress and mounting screw pressure, making it an enduring benchmark for closed guitar tuners.
| Brand | Schaller |
| SKU | 10020270.05.53 |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| Single Tuner Weight with Button (Small/Large) | Metal (1.27 oz/1.34 oz), Perloid (1.06 oz/1.09 oz), Ebony (1.06 oz/1.09 oz) including hollow screw |
| Button Bore Hole | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat |
| Product Weight | 0.13 lb |
| Post Material | Brass |
| Lubrication | Permanently lubricated with Schaller special grease |




















