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 engineering. Featuring a refined 1:18 gear ratio, it ensures precise, velvety-smooth tuning and exceptional pitch stability. High-precision CNC machining and high-grade brass posts guarantee durable, wear-free performance across diverse playing styles.
Equipped with the innovative stepped M6 flanged washer, this tuning machine facilitates effortless installation without requiring stepped headstock boreholes. The 0.39 in (10 mm) stepped base centers the string post securely through the hollow screw, eliminating tilting torque and minimizing strain on mounting screws. Factory lubrication with proprietary Schaller grease guarantees lifelong, maintenance-free operation.
Designed to match the mounting dimensions of its historic predecessor, the M6 135 allows for seamless retrofitting and drop-in replacement on compatible electric and acoustic guitar headstocks. Each tuning machine incorporates self-locking gearing mechanics to maintain tuning integrity and provide reliable string tension through aggressive play.
| Gear Ratio | 1:18 |
| Weight per Machine with Button (Small/Large) | Metal (1.27 oz / 1.34 oz), Perloid (1.06 oz / 1.09 oz), Ebony (1.06 oz / 1.09 oz) including hollow screw |
| Button Borehole | Diameter 0.17 in (4.2 mm) with drive flat 0.14 in (3.6 mm) |
| Product Weight | 0.13 lb |
| Brand | Schaller |
| Series | M6 Series |
| Post Material | Brass |
| Mechanism Type | Closed Gear |
| Lubrication | Permanently lubricated with Schaller special grease |
