Kluson® plate-mounted 3 per side tuning machine set with improved 15:1 gear ratio for more stable and accurate tuning. The nickel plated housing and button style are period correct for a variety of production dates. This set comes complete with 2 plates of 3 bass side machines, 3 treble side machines, bushings and mounting screws.

Specifications:

• Center to center distance of all 3 posts= 2 3/4 in.
• Center to center distance between posts - 1 3/8 in.
• Length of baseplate- 4 1/4 in., post height= 1 in.

Historically used on:

• 1956 - 1964 Kay® Guitars (countless models)
• 1956 - 1964 Gibson® LG-1, LG-2 & LG-3
• 1956 - 1964 Gibson® J-45
• 1956 - 1964 Gibson® J-50
• 1956 - 1959 Gibson® CF-100E
• 1956 - 1964 Gibson® ES-125
• 1956 - 1964 Gibson® ES-140
• 1956 Gibson® ES-150
• 1956 - 1961 Gibson® Les Paul Junior
• 1961 - 1963 Gibson® Les Paul Junior / SG Junior
• 1963 - 1964 Gibson® SG Junior
• 1956 - 1959 Gibson® Les Paul Special
• 1960 - 1961 Gibson® Les Paul / SG Special
• 1960 - 1964 Gibson® SG Special
• 1959 - 1964 Gibson® Melody Maker
• 1962 - 1964 Gibson® B-25
• 1958 Gibson® LG-0
• 1958 - 1964 Epiphone® Cortez
• 1958 - 1964 Epiphone® Century
• 1958 - 1963 Epiphone® Wilshire
• 1958 - 1963 Epiphone® Coronet
• 1958 - 1964 Epiphone® Texan
• 1957 Gibson BR-6 lap steel

Bushings specifications:

• Gear Ratio = 15:1
• Outside diameter = 8.85mm
• Inside diameter = 1/4 inch or 6.48mm

Reissues of the original stamped steel tuning machines that the original Kluson Company offered utilizing the same mounting specs to offer a non-modification required retrofit/replacement. The gear ratio was improved from the original 12:1 ratio to 15:1 to offer more tuning stability.

There are some minor construction improvements over the original production from the 50's and 60's including: a slightly heavier button shaft to avoid the occasional impact bending the button shaft easily, nylon washers used internally to maintain appropriate tension without metal to metal contact which results in particles in lubricant within the housing and a taller internal ring gear for better gear mesh and contact and finally a tension washer under the string post to reduce tolerances and keep tension on the post itself. This helps reduce backlash as compared to the original production as well as adds overall life of the mechanism.

Product Measurements

Gear Ratio: 1:15
Shaft Diameter: 0.25 in.
Shaft Height: 0.95 in.
Spacing: 0.60 in.
Mounting Hole Center to Center A: 1.30 in.
Mounting Hole Center to Center B: 1.03 in.