Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine features a precise 1:18 gear ratio that ensures ultra-smooth operation and exceptional tuning stability. All components are precision CNC-machined and surface-treated, operating via a self-locking drive mechanism for sensitive, uniform adjustments.
Crafted with premium brass string posts fitted precisely into the housing, this closed machine head offers outstanding wear resistance. It incorporates the innovative stepped M6 flanged washer with a 0.4 in (10 mm) diameter, which reliably centers the string post via the banjo bolt and eliminates tilting torque without requiring a stepped headstock bore.
Featuring permanent lubrication with specialized grease, each enclosed unit is entirely maintenance-free. The M6 135 retains the exact mounting dimensions of its classic predecessor, enabling seamless drop-in replacement on compatible electric and acoustic instruments without structural modifications.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Model | M6 135 |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| Weight | 0.79 lb |
| Weight per Single Tuner with Button (Small / Large) | Metal (0.08 lb / 0.08 lb), Perloid (0.07 lb / 0.07 lb), Ebony (0.07 lb / 0.07 lb) including banjo bolt |
| Button Bore Hole | Diameter 0.17 in (4.2 mm) with drive flat 0.14 in (3.6 mm) |
| Post Material | Brass |
| Lubrication | Permanent specialized grease, maintenance-free |
