Schaller M6 180 Guitar Tuning Machine
The Schaller M6 180 guitar tuning machine features a refined 1:18 gear ratio that delivers exceptional precision, ultra-smooth operation, and outstanding tuning stability. Originally establishing the benchmark for enclosed machine heads in 1966, this updated edition incorporates modern CNC manufacturing for velvet-smooth response and self-locking performance.
Crafted with premium wear-free brass string posts and permanently lubricated with proprietary Schaller grease, each unit requires zero maintenance over its lifetime. The innovative stepped collar design centers the post securely through the threaded bushing, eliminating tilting torque and protecting both the string post and rear mounting screw.
Engineered for direct retrofit installation, the M6 180 drops seamlessly into existing mounting holes without modification. It comes complete with threaded hex bushings, stepped washers, and mounting screws to ensure robust centering and dependable guitar tuning reliability.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| String Post Material | High-Grade Brass |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Weight per Single Tuner with Button (Small/Large) | Metal: 1.27 oz / 1.34 oz (36 g / 38 g); Perloid: 1.06 oz / 1.09 oz (30 g / 31 g); Ebony: 1.06 oz / 1.09 oz (30 g / 31 g) |
| Product Weight | 0.13 lb |
| Lubrication | Permanently lubricated, maintenance-free |



















