Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine sets an industry benchmark for closed tuners, featuring an upgraded 1:18 gear ratio that provides velvety-smooth operation and precise tuning stability. Each component is CNC-machined to exacting tolerances and surface-finished, while the self-locking drive ensures consistent performance across every string change.
Crafted with premium brass string posts precisely fitted into the housing, these tuners deliver maximum wear resistance and sustained pitch accuracy. The stepped M6 flanged washer reliably centers the string post via the banjo bolt, eliminating tipping torque and relieving pressure from both the post and rear mounting screws without requiring stepped headstock drilling.
Permanently lubricated with specialized Schaller grease for entirely maintenance-free operation, the M6 135 shares identical mounting dimensions with its predecessor model, allowing seamless drop-in replacement on electric and acoustic guitars.
| Brand | Schaller |
| Model Number | 1002 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight | 0.79 lb |
| String Post Material | Brass |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
| Button Bore Diameter | 0.17 in (4.2 mm) with 0.14 in (3.6 mm) drive flat |
| Included Hardware | 6 threaded bushings, 6 flanged washers, 6 mounting screws (M2.2 x 9.5) |
