Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 guitar tuning machine delivers outstanding precision and smooth tuning comfort with an upgraded 1:18 gear ratio. CNC-machined components with refined surface finishes and a self-locking drive ensure velvet-smooth operation, reliable friction, and exceptional tuning stability.
Crafted with premium high-grade brass posts precisely fitted into the housing, this sealed tuning machine offers long-lasting, wear-free performance. Permanent lubrication with specialized Schaller grease guarantees maintenance-free operation across its entire lifespan.
Featuring the innovative stepped M6 flanged collar, this tuner centers the string post securely without requiring a stepped headstock counterbore, eliminating tilt torque and protecting structural integrity. Matching the exact mounting dimensions of its historic predecessor, it installs seamlessly onto standard headstocks.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Housing Type | Sealed |
| Button Bore Hole | 0.17 in (4.2 mm) diameter with 0.14 in (3.6 mm) drive flat |
| Flanged Washer Diameter | 0.39 in (10 mm) |
| Product Weight | 0.79 lb |
| Weight per Single Tuner 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) |
