Guitar Machine Heads & Accessories by Grover

Guitar Machine Heads & Accessories by Grover

Grover Machineheads

For almost a century, we’ve been keeping the world’s finest string instruments in tune. It started in the late 1800’s when Grover first produced a few guitar and banjo machine heads, then expanded into additional production of tuners for bass guitar, pedal steel, mandolin, dulcimer, ukulele and violin. While many changes have taken place over the years, the one constant has been that we continue to supply the music industry with the finest products available. From the world’s first enclosed, permanently lubricated machine heads, to our newest technological breakthroughs, the one-step self lock, we are proud to be original equipment on many of the world’s finest string instruments.

Since our production process utilises only the top of the line quality standards, we proudly stand behind our machine heads with the following lifetime warranty... should your Grover tuners ever fail, for any reason, simply return them to us for a fast and friendly no charge repair or replacement. If you are already using Grover products, thank you for your support in making Grover the most trusted name in music around the world.

If not, maybe it’s time to “Change Over to Grover!”

Finishes and Specifications

FINISHES
Availability varies with each style. Check under individual product descriptions.


N Nickel	C Chrome	BN Black Nickel	BC Black Chrome	G Gold

POST HOLE SIZES
Many of the Grover tuners will fit the existing holes in the headstock without any modification at all.
However, we realize sometimes the existing holes need to be enlarged a bit in order for our tuners to fit properly.
As a result, we have provided the chart below showing the exact drill bit needed for each tuner series.
Please note, always enlarge the hole size from the front, or face, of the headstock.

Tuner Series/Hole size

102
106
109
115
116
117
118
121
122
124
133

25/64"
25/64"
25/64"
21/64"
23/64"
21/64"
21/64"
3/8"
3/8"
3/8"
23/64"

135
136
138
142
144
150
162
205
303
306
308

25/64"
25/64"
23/64"
45/64"
35/64"
25/64"
11/32"
25/64"
25/64"
25/64"
21/64"

406
H97
V97
H98
V98
2
4
5
25
75
85

25/64"
15/64"
23/64"
15/64"
23/64"
21/64"
5/16"
11/32"
11/32"
11/32"
11/32"

Grover Rotomatics	Locking Rotomatics	Replacement Buttons for Machine Heads	Vintage	Classical Guitar and Mandolin
Bass and Pedal Steel	Banjo Machine Heads	Violin, Ukulele, Pegs	Banjo Bridges	Grover Strap Buttons

Grover Rotomatics®

ORIGINAL ROTOMATICS® (102 SERIES)
These guitar machines are a triumph in engineering and styling. The housing provides a maximum bearing for worm, gear and string post. Gear ratio is 14 to 1. Worm and gear are precision-cut for perfect meshing. This eliminates backlash and slippage. Countersunk
tension screw permits players to regulate turning tension to any degree. Gear box has a special lubricant for lifetime, trouble-free service. Includes 5/8” washers, bushings and wood screws.
For standard guitars, set of 6
102N Nickel
102C Chrome
102BC Black Chrome
102G Gold

ROTOMATICS® WITH 18:1 GEAR RATIO (102-18 SERIES)
The original Rotomatic® with an improved higher ratio gearing. The 18:1 ratio provides for finer tuning and greater stability. The finer gears provide smoother tuning and a higher degree of backlash elimination. This new version of the Rotomatic® uses the exact housing as the original. Only the gearing has changed. Includes washers, bushings, and wood screws.
For standard guitars, set of 6
102-18N Nickel
102-18C Chrome
102-18G Gold
102-18BC Black Chrome

SUPER ROTOMATICS® (109 SERIES)
The super Rotomatic® has a 14 to 1 gear ratio. The 3 step button gives this machine a distinctive look and the sealed-in lubrication assures smooth gear-and-worm movement for the life of the machine.
3 treble and 3 bass, set of 6
109C Chrome
109BC Black Chrome
109G Gold

MINI ROTOMATICS® (205 SERIES)
Totally professional in design and performance. Small, lightweight, this precision made machine fits guitar headpieces that will not take full size machines. The mini buttons provide more space for player’s fingers (even large fingers) to tune strings. Gear ratio is 14 to 1. Sealed in lubrication keeps the mini perfect for a lifetime! Includes 5/8” washers, bushings and wood screws.

3 treble and 3 bass, set of 6
205C Chrome
205BC Black Chrome
205G Gold

6-in-line, set of 6
205C6 Chrome
205BC6 Black Chrome
205G6 Gold

Left-hand 6-in-line, set of 6
205CL6 Chrome
205BCL6 Black Chrome
205GL6 Gold

12-string, set of 12
205C12 Chrome
205G12 Gold
205BC12 Black Chrome

Locking Rotomatics®
US PATENT NUMBER 6,078,001 Grover’s patented locking tuners have eliminated the obstacles of other locking devices. Since there are no external mechanisms to initiate the locking action, the machine head’s appearance is like any other. The entire locking mechanism is self-contained and self-actuated.

ORIGINAL LOCKING ROTOMATICS® (106 SERIES)
The introduction of the new Grover Locking Rotomatics® gives you the ease of use provided by a standard tuner and the positive locking of our internal cam post. Simply insert the string through the string hole, pull to tension by hand and begin tuning. As you start to tune, only the locking cam in the string post turns. Once the string is locked, the string post begins to turn allowing you to bring the string to pitch. In less than one revolution of the string post, you will be in tune, to stay in tune. Gear ratio is 18 to 1.
For standard guitars, set of 6
106C Chrome
106G Gold

MINI LOCKING ROTOMATICS® (406 SERIES)
The same innovative engineering and classic design as the Original Locking Rotomatics®, but with smaller buttons for 6-in-line guitars, or for those who prefer a little more space for their fingers. Gear ratio is 18 to 1.
3 Treble and 3 Bass, set of 6
406C Chrome
406G Gold
6-in-line, set of 6
406C6 Chrome
406G6 Gold

Replacement Buttons for Machine Heads


GX1360 Full size imitation mother-of-pearl	102E Full size ebony	205E Mini size ebony

Vintage

IMPERIAL™ (150 SERIES)
Distinctive in styling and quality, the Imperial™ made it’s first appearance in the 1970’s. The most notable feature of this unique machine head is the futuristic Three Step button, a fresh and funky design trademarked by Grover. This re-introduction if the Imperial™ is an exact reproduction of the originals, including a 16 to 1 gear ratio.
3 treble and 3 bass, set of 6
150C Chrome
150G Gold

DELUXE GUITAR MACHINES (133 SERIES)
Mechanically engineered to the most precise standards of excellence, with the classic look of vintage styling, Grover Deluxe machine heads are a timeless achievement for guitar tuning. Worm and gear are cut to mesh perfectly, thereby eliminating backlash and slippage. The housings are self-lubricating for a lifetime of trouble-free service.
For 6 string with safety post
133N 3+3, Nickel
133N6 6-in-line, Nickel

VINTAGE (135 SERIES)
Our Vintage machine uses a die-cast, two-piece housing for additional strength and precision. The unique bearing surface in the housing provides a rigid string post enhancing the alignment of the gear and worm. The 14 to 1 gear ratio provides for fine tuning.
3 treble and 3 bass, set of 6
135N Nickel
135G Gold

VINTAGE DELUXE (136 SERIES)
Like our Vintage machine heads, the 136 uses the same sturdy construction of our die-cast, two-piece housing. The 136 Deluce Series features a classic rounded button made popular in the 1950’s. If you’re going retro, the 136 series is definitely for you!
6-in-line bass side
136N6 Nickel
136G6 Gold
3 treble and 3 bass, set of 6
136N Nickel
136G Gold

VINTAGE (138 SERIES)
The Grover® deluxe machine heads are mounted three to a plate for the vintage look that has been popular for decades.
The stamped back plate provides a sturdy base for mounting vertically or horizontally on the head stock. The housings are securely fastened to the base insuring proper gear and worm alignment for accurate tuning. Bushings and screws included.
Vertical, 3 Treble and 3 Bass, Set of 6
V138N Nickel
Horizontal, 3 Treble and 3 Bass, Set of 6
H138N Nickel

STA-TITE™ (97 SERIES)
The Original Grover® Sta-Tite™ machine head. The classic styling of the Sta-Tite™ returns with the Grover® name. The butter bean button identifies this as the original. A 14:1 gear ratio provides precise tuning. Available in chrome, gold or nickel finish with a horizontal or vertical string post in 3+3 configuration. Wood screws, washers, and bushings included.
Vertical, 3 Treble and 3 Bass, Set of 6
V97N Nickel
V97C Chrome
Horizontal, 3 Treble and 3 Bass, Set of 6
H97N Nickel
H97C Chrome

STA-TITE™ 18:1 RATIO (97 SERIES)
The same excellent features as the original 97 series, now with an 18:1 gear ratio! The Original Grover® Sta-Tite™ machine head. The classic styling of the Sta-Tite™ returns with the Grover® name. The butter bean button identifies this as the original. A 18:1 gear ratio provides precise tuning. Available in chrome or nickel finish with a horizontal or vertical string post in 3+3 configuration. Wood screws, washers, and bushings included.
Vertical, 3 Vertical, 3 Treble and 3 Bass, Set of 6
V97-18N Nickel
V97-18C Chrome
Horizontal, 3 Treble and 3 Bass, Set of 6
H97-18N Nickel
H97-18C Chrome

STA-TITE™ (98 SERIES)
Beautiful machine heads with the classic round button, providing smooth,sure tuning. Heavily plated finish with a striking contrast to the brass gears. Screws and bushings inc.
Vertical, 3 Treble and 3 Bass, Set of 6
V98N Nickel
V98C Chrome
Horizontal, 3 Treble and 3 Bass, Set of 6
H98N Nickel
H98C Chrome

Classical Guitar and Mandolin

CLASSIC GUITAR MACHINES (303 SERIES)
Traditional Grover® quality and craftsmanship. Beautifully engraved plates. Three on a plate. Butterfly style, pearloid buttons, plastic coated string posts. Includes screws.
3+3, Set of 6
303N Nickel
303G Gold

DELUXE CLASSIC MACHINE HEADS (306 SERIES)
Excellence in materials and craftsmanship are the hallmark features of these classic machine heads. The die cast base provides a rigid foundation for the gear and worm, assuring perfect alignment and mesh. The pearloid buttons are attached with a tension screw to provide the feel of your preference. A bearing over the worm shaft provides additional support and enhances the smooth performance. Includes wood screws.
3+3, Set of 6
306N Nickel
306G Gold

DELUXE MANDOLIN MACHINE HEADS (308 SERIES)
These new mandolin machine heads feature a die cast base. The rigid base is ideal to insure correct gear and worm alignment as it aids in maintaining the center lines of these critical parts. A wide bearing surface over the worm gives added support and enhances the smooth action on these machines. Screws and bushing provided.
Standard 4+4, for “A” style mandolins
308N Nickel
308G Gold
Standard 4+4, for “F” style mandolins
308FN Nickel
308FG Gold

Bass and Pedal Steel

MINI BASS MACHINES (144 SERIES)
The Grover® “MINI” is lightweight, compact and durable for modern electric basses. Gear ratio is 20 to 1. Housing is specially machined to achieve the precise tolerance that prevents slippage and allows fine tuning. Sealed gear box has permanent lubrication that makes the MINI friction-free for life. Individually hand-tested. Screws and bushings included.

2 Treble, 2 Bass
144C Chrome
144BC Black Chrome
144G Gold

4-in-line
144C4 Chrome
144BC4 Black Chrome
144G4 Gold

Left hand models
144CL4 Chrome
144BCL4 Black Chrome
144GL4 Gold

VINTAGE BASS MACHINE HEADS (142 SERIES)
Precision and durability with classic styling make these bass machine heads ideal for manufacturing or upgrading instruments. The die cast housing is a sturdy foundation for maintaining center lines of the worm and gear. A fixed bearing surface in the housing creates a smooth turning surface for easy tuning. The safety string post and “elephant ear” button provide utility and a vintage look. Available in 4-in-line or 2+2 configurations. Bushings and wood screws included.
Set of 4
142C 2+2, Chrome
142C4 4-in-line, Chrome

PEDAL STEEL GUITAR MACHINES (210 SERIES)
This model is designed specifically for use with pedal steels. The shortened string post and bushing are designed for the slotted head of a pedal steel. It will house a headstock thickness varying from .235” (5.97mm) to .400” (10.16mm). The string post extends .900” (22.87mm) from the base of the housing. The housing has a mounting pin at the back, eliminating the need for a mounting screw. This also facilitates mounting on the cast headstocks used on pedal steel guitars.
Set of 10
210C Chrome

Banjo Machine Heads

GEARED BANJO PEGS (SET OF 5)

Metal Buttons
121C5 Chrome
121G5 Gold

Square Pearloid Buttons
122C5 Chrome
122G5 Gold

Round Pearloid Buttons
124G5 Gold
PICTURED

GEARED BANJO PEGS (SET OF 4)
Round Pearloid Buttons
123C Chrome PICTURED
123G Gold

BANJO GEARED 5th PEG
Pearloid Buttons
162C Chrome

PERMA TENSION™ BANJO PEGS (SET OF 5)
No slippage, no backlash, no looseness. Heavy knurled bushings with threaded extension, locks permanently into wood.
Countersunk button screw regulates tension.
Metal buttons
117N Nickel

PERMA TENSION™ TENOR BANJO PEGS (SET OF 4)
Metal Buttons
115N Nickel

CHAMPION™ BANJO PEGS
Favourite, popular-priced patent peg for nearly three generations. Positive, non-slip action will last a lifetime.
Non-breakable black buttons.
Black Buttons, Set of 5
25B Nickel PICTURED
Black Buttons, Set of 4
75B Nickel

PERMA TENSION™ BANJO 5th PEG
Metal Button
118N Nickel
118C Chrome PICTURED

BANJO 5TH STRING PEG
A traditional style peg with a knurled brass insert and a nickel-plated pressure sleeve.
Ivory Button
116N Nickel

Violin, Ukulele, Pegs

CHAMPION™ PEGS (SET OF 4)
Favorite, popular-priced patent peg for nearly three generations. Positive, non-slip action will last a lifetime. Non-breakable black buttons.
Black buttons for violin
5B Nickel
Black buttons for ukulele
2B Nickel

STA-TITE™ PEGS (SET OF 4)
The machined brass housing, string post and bushing provide for smooth, even turning and finish protection. The bushing inserts into the peg head for even distribution of pressure created by friction pegs.
4B Nickel

Banjo Bridges

TUNE-KRAFT™ COMPENSATING BANJO BRIDGES
Made of select maple with specially shaped compensating ebony top. Gives each string its proper scale. Players can change keys without having to adjust their tuning.
76 1/2 5-string banjo, 1/2'' high
77 5/8 5-string banjo, 5/8'' high

ACOUSTICRAFT™ BANJO BRIDGES
Specially designed 3-legged bridges. Seasoned maple with ebony insert and
individual ivoroid block.
90 1/2 Tenor banjo, 1/2'' high
91 5/8 Tenor banjo, 5/8'' high
92 1/2 5-string banjo, 1/2'' high
93 5/8 5-string banjo, 5/8'' high

MINSTREL™ BANJO BRIDGES
Popular 3-legged model. Select maple with ebony strip.
70 1/2 Tenor banjo, 1/2'' high
71 5/8 Tenor banjo, 5/8'' high
72 1/2 5-string banjo, 1/2'' high
73 5/8 5-string banjo, 5/8'' high

LEADER™ BANJO BRIDGES
Made of select hard maple with ebony top. Specify height.
30 1/2 Tenor banjo, 1/2'' high
30 5/8 Tenor banjo, 5/8'' high
30B 1/2 5-string banjo, 1/2'' high
30B 5/8 5-string banjo, 5/8'' high

NON-TIP™ BANJO BRIDGES
Select hard maple. Grover® “Non-Tip™” center support. Specify height when ordering.
4 1/2 5-string banjo, 1/2''
4 5/8 5-string banjo, 5/8''
5 1/2 Tenor banjo, 1/2''
5 5/8 Tenor banjo, 5/8''

Grover Strap Buttons
Grover Strap Buttons

If you want to add some subtle individuality, check out these cool strap buttons made by Grover. You’ll know that Grover’s reputation for top quality replacement tuners – including Grover’s legendary Rotomatics – is second to none, so you can bet these new strap buttons will be the business.

Designed for players who like the idea of straplocks but without all the fiddling about, hassle and expense of traditional straplocks, Grover’s strap buttons keep the strap locked in style! Grover’s two-piece, screw-on button design lets the player change styles easily while the oversized die-cast buttons and custom-fitted O-rings safely secure the strap.

All the hardware is provided, and the installation process is simple, with no modification or risk of damage to the instrument.

610C
GROVER STRAP BUTTONS
SKULL & CROSSBONES – CHROME

610G
GROVER STRAP BUTTONS
SKULL & CROSSBONES – GOLD

620C
GROVER STRAP BUTTONS
EAGLE – CHROME

620G
GROVER STRAP BUTTONS
EAGLE – GOLD

630C
GROVER STRAP BUTTONS
STAR – CHROME

630G
GROVER STRAP BUTTONS
STAR – GOLD

640C
GROVER STRAP BUTTONS
IRON CROSS – CHROME

640G
GROVER STRAP BUTTONS
IRON CROSS – GOLD

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The export section of the JHS website details the products available internationally. We do welcome enquiries from overseas distributors interested in handling our products, please contact us at export@jhs.co.uk. Not all the products shown are however available for overseas purchase due to territorial sales rights, copyright, trade mark, design and patent rights. We will be pleased to deal with any specific enquiry accordingly.

All products contained within the JHS website are available throughout the United Kingdom and Eire from all good music stores.

Please note, as trade only distributors we do not sell direct to the general public, but where possible we will direct any enquirer to a source of supply.

Specifications, colours and pricing are subject to change without prior notice.