Schaller M6 90 Guitar Tuning Machine
The Schaller M6 90 delivers exceptional tuning accuracy and smooth operation with its precision-engineered 1:18 gear ratio. Designed to set the industry standard for closed tuning machines, it combines classic reliability with modern engineering refinements.
Crafted with CNC-machined components and high-grade brass string posts, these tuners ensure superior tuning stability and wear-free performance. The self-locking drive and Schaller special grease lubrication provide consistent, maintenance-free functionality over extended use.
Featuring the innovative stepped M6 flanged washer, the system eliminates tilt torque and centers the string post without requiring stepped headstock boreholes. It matches the exact installation dimensions of its predecessor for seamless drop-in replacement on compatible guitars.
| Brand | Schaller |
| Model | M6 90 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight per Unit (Small/Large Button) | Metal (0.08 lb / 0.08 lb), Pearloid (0.07 lb / 0.07 lb), Ebony (0.07 lb / 0.07 lb) |
| Button Bore Hole | 0.17 in diameter with 0.14 in drive flat |
| Post Material | Brass |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
| Washer Type | Stepped Flanged Washer (0.39 in diameter) |
| Mounting Screws Included | M2.2 x 9.5 mm |
| Overall Product Weight | 0.8 lb |
