Schaller M6 135 Guitar Tuning Machine
The Schaller M6 135 guitar tuning machine offers precision engineering and smooth tuning stability for discerning musicians. Featuring a 1:18 gear ratio, this closed-type tuning machine ensures velvety-smooth operation, fine adjustment, and steadfast pitch accuracy. CNC-machined components and high-grade brass string posts provide durable, wear-free performance across extensive playing time.
Equipped with Schaller's innovative stepped flanged washer, the unit securely centers the string post via the banjo bolt, eliminating the need for a stepped peghead bore. This design effectively absorbs lateral tilting stress and relieves mechanical pressure from both the post and the rear mounting screw. Permanently lubricated with Schaller special grease, the closed housing provides completely maintenance-free operation.
With identical installation dimensions to its classic predecessor, the M6 135 serves as a direct drop-in replacement without requiring guitar modifications. Each set includes matching threaded bushings, stepped washers, and mounting screws for complete installation.
| Brand | Schaller |
| Model | M6 135 |
| Product Type | Guitar Tuning Machine |
| Gear Ratio | 1:18 |
| Post Material | High-Grade Brass |
| Button Borehole | Diameter 0.2 in (4.2 mm) with 0.1 in (3.6 mm) drive flat |
| Mounting Screws | M2.2 x 0.37 in (9.5 mm) |
| Weight per Single Tuner with Button (Small/Large) | Metal: 1.3 oz / 1.3 oz (36 g / 38 g), Perloid: 1.1 oz / 1.1 oz (30 g / 31 g), Ebony: 1.1 oz / 1.1 oz (30 g / 31 g) |
| Product Weight | 0.8 lb |




















