Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine offers precision engineering and smooth tuning stability with an improved 1:18 gear ratio. Designed with CNC-machined components and high-grade brass posts, it delivers velvety action and long-lasting, wear-free performance for both solid and slotted headstocks.
Featuring the innovative stepped M6 flanged washer, this tuning machine centers the string post securely through the threaded bushing without requiring a stepped headstock bore. This specialized design eliminates tilting torque and reduces mechanical strain on both the string post and rear mounting screw.
All enclosed housings are permanently lubricated with Schaller special grease for completely maintenance-free operation. Maintaining identical installation dimensions to its predecessor, it serves as an effortless drop-in upgrade or replacement for modern and vintage instruments alike.
| Brand | Schaller |
| Model | M6 135 |
| 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 Unit (Metal Button) | 1.27 oz / 1.34 oz (36 g / 38 g) |
| Weight per Single Unit (Perloid/Ebony Button) | 1.06 oz / 1.09 oz (30 g / 31 g) |
| Product Weight | 0.13 lb |
| Lubrication | Schaller Special Grease (Maintenance-Free) |
