Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine sets an industry standard for closed tuning machines, combining timeless design with modern precision engineering. Featuring an improved 1:18 gear ratio, it delivers ultra-precise, velvet-smooth tuning and exceptional pitch stability. Every component is CNC-machined to exact tolerances, surface-finished, and permanently lubricated with Schaller special grease for maintenance-free operation.
Equipped with high-grade brass posts perfectly fitted into the housing, the M6 135 guarantees maximum tuning stability and wear-free performance. The self-locking drive ensures consistent and sensitive adjustments under string tension. Its innovative stepped M6 flanged washer centers the string post reliably through the banion bolt without requiring a stepped headstock bore, effectively eliminating tilting torque and reducing mechanical stress.
Designed with standard dimensions identical to its predecessor model, this machine head offers straightforward replacement and installation without requiring instrument modifications. The rugged construction and premium materials ensure dependable performance across demanding playing environments and studio sessions.
| Brand | Schaller |
| SKU | 10020671.06.55 |
| Model | M6 135 |
| Product Type | Guitar Tuning Machine |
| Series | M6 Series |
| Gear Ratio | 1:18 |
| Post Material | Brass |
| 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 driving surface 0.14 in (3.6 mm) |
| Lubrication | Schaller Special Grease (Permanently Lubricated) |




















