Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 sets a high standard for enclosed guitar tuning machines, offering a refined 1:18 gear ratio for smooth, precise, and sensitive tuning performance. Each component is CNC-machined to exact tolerances and finished to deliver exceptional stability and longevity.
Featuring high-grade brass posts precision-fitted into the housing, this machine head prevents wear and maintains outstanding tuning stability. The self-locking drive and lifetime lubrication with specialized grease ensure reliable, completely maintenance-free operation across years of use.
Equipped with an innovative stepped flanged washer, it centers the string post securely without requiring stepped peghead drilling. This smart design eliminates tilting torque and reduces mechanical stress on both the post and mounting screw, matching previous M6 mounting dimensions for seamless replacement.
| Brand | Schaller |
| Model | M6 90 |
| Series | M6 Series |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| Button Bore 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) including banjonut |
| Weight | 0.13 lb |
| Lubrication | Permanently lubricated with Schaller special grease |
