Gotoh SGS510Z

The Gotoh SGS510Z is a style of machine head (a.k.a. tuning peg) installed on a handful of Ibanez guitar models. It is manufactured by the G-GOTOH Gut Co., Ltd. in Japan as part of the company's flagship SG510 series

The SGS510Z offers a 1:18 gear ratio. Its smaller size makes it suitable on for either six-inline or three-on-a-side (L3+R3) headstock configurations. A variety of button shapes are available, though most Ibanez guitars are equipped with the rounded "bean" shaped L5 button. It is available in locking and non-locking versions although the non-locking version is used nearly exclusively in the Ibanez applications.

SGS510Z varieties[]

MG-T locking mechanism[]

The Gotoh MG-T (Magnum Lock-Trad) mechanism allows the user to lock the tuners once the instrument is in tune. It features a thumbscrew locking mechanism to stabilize tuning while playing and preventing incidental contact with the tuners from altering the instrument's tuning.

MG locking mechanism[]

The Gotoh MG (Magnum Lock) mechanism allows the user to lock the tuners once the instrument is in tune. Instead of a thumbscrew locking mechanism like the MG-T variety (see above) the Magnum Lock mechanism is engaged as the user twists the button to adjust the tuning.

Height adjustable locking posts (H.A.P-M)[]

The SGS510Z is available with height-adjustable posts (H.A.P). This allows the user to adjust individual strings to dial in the oscillation, which contributes to sustain. The H.A.P-M design combines the adjustable post height with the Magnum Lock system.

Ibanez models[]

These machine heads are used on a handful of AE series acoustic guitar models. For an inventory of models using the SGS510Z, see this list.

Similar tuning machines[]

The Gotoh SGS510 is a similar model with a 1:15 gear ratio. The Gotoh SGL510 is a similar model with a slightly larger body which is suitable only for 3+3 use. Gotoh makes a more affordable tuning machine, the Gotoh SG381, which is used on a large number of Ibanez guitars. The SG381 is interchangeable with the SGS510Z in terms of installation.