Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 series sets the industry standard for closed tuning machines, featuring a precise 1:18 gear ratio that delivers exceptional tuning accuracy and smooth operation. Engineered with high-precision CNC-machined components and self-locking drive mechanisms, these tuners ensure stable, sensitive tuning retention across various playing styles.
Crafted with premium brass string posts fitted directly into the housing, the M6 135 guarantees wear-free performance and long-term tuning stability. The stepped M6 flanged washer centers the string post securely via the banjo bolt, eliminating tilting moments and preventing excess pressure on both the post and rear mounting screws without requiring stepped headstock drilling.
Designed with the exact mounting dimensions of its predecessor for seamless drop-in replacement, each closed machine head comes permanently lubricated with Schaller special grease for completely maintenance-free longevity.
| Brand | Schaller |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Weight per Single Tuner with Button (Small/Large) | Metal (1.3 oz / 1.3 oz), Perloid (1.1 oz / 1.1 oz), Ebony (1.1 oz / 1.1 oz) including hollow screw |
| Button Bore Hole | Diameter 0.17 in with driving surface 0.14 in |
| String Post Material | Brass |
| Housing Type | Sealed, permanently lubricated |
| Flanged Washer Diameter | 0.39 in (10 mm) |
| Included Mounting Screws | M2.2 x 0.37 in |
| Product Weight | 0.79 lb |
