It was essentially a series encompassing a base which was more traditional in having four straight legs with the fitment design giving it the X in its name. The abbreviation of the most popular, the Eames DAX Chair was Dining (D) Arm Chair (A) on X Base (X).
The original first generation of chairs released in 1950 had 3 size options which were DAX (Dining), Standard (SAX) and Low (LAX). With only a 1-inch difference between the SAX and DAX the choice was refined to 2 sizes in 1953, keeping the DAX but losing the other 2 and replacing them with a middle version called the Medium (MAX) Arm X Base Chair. The DAG was added to the series in 1954 and was exact to the DAX only with longer rear legs to ‘guard’ the shell against wall impact and thus the Dining (D) Height, Arm (A) Chair on Guard (G) base was born.
It is also worth noting that Herman Miller replaced the X base in 1954 with what was later to be termed the ‘H’ base, which was more versatile and aesthetically more appealing and thinner. The later DAG therefore only appeared in the H base but the abbreviated name for the chairs was kept the same to avoid confusions.
The first-generation fiberglass chairs of 1950 were a fantastic success and for collectors, these are the pinnacle. Available in the 3 sizes, the X base was the most commonly found of the ‘original 5’ which included the rocking RAR, Eiffel DAR, cradle LAR and dowel DAW. This remained the case through the years and changing generations and colors of the plastic chair series. Along with the side chair DSX and DSG versions, this base type sold the most units of all, with exception of the commercial stacking base chairs.
The very first x-bases of the Eames DAX Arm Chair were produced with silver screw in feet named ‘domes of silence’. Although aesthetically pleasing, they did have the potential to be bent during moving or be irrevocably broken so they were replaced with boot glides, essentially slip on feet. Eventually, with the ‘H-base’ built in nylon self-leveling glides were introduced.
DAX | SAX | LAX | MAX | DAG | |
Height | 31.25” (79.38cm) | 29.5” (74.93cm) | 26.125” (66.36cm) | 27.5” (69.85cm) | 31" (78.74cm) |
Width | 24.875” (63.18cm) | 24.875” (63.18cm) | 24.875” (63.18cm) | 24.875” (63.18cm) | 24.875” (63.18cm) |
Depth | 23.5” (59.70cm) | 24.5” (62.23cm) | 25.375” (64.45cm) | 24” (60.96cm) | 25.5" (64.77cm) |
Seat Height | 17.875” (45.40cm) | 16.75” (42.55cm) | 14.875” (37.78cm) | 15.75” (40.00cm) | 17.625” (44.76cm) |
Top | Molded Plastic Zenaloy (fiberglass re-enforced plastic) |
Base | Tubular Steel Frame, Zinc or Black Oxide |
Feet | Domes of Silence, Boot Glide, White Plastic Floor Glide |
First generation X Base fitment on the underside of the Eames DAX armchair
First Generation
The first generation X-base was released in 3 sizes ,DAX, SAX and LAX
The X-Base is distinctive with a 'criss-cross' where the base joins the chair
The base was with domes of silence feet which were aluminum floor glides
X Bases are often found with push on boots which were used to easily replace broken domes of silence
For tops, see the shell generations page here
Second generation H-Base fitment on the underside of the Eames DAX chair
Second Generation
By 1955 the heavy and cumbersome X base was replaced with the 'H-Base'
The first H Bases still had the domes of silence feet
The H Base was released with the DAX, MAX and DAG
The H Base was lighter and more versatile than the preceding X generation
For tops, see the shell generations page here
Front view of DAX with H Base using the push on Boot feet
Third Generation
The second release of the H-base in the later 1950's had a change of feet
The tricky and often breakable 'domes of silence' were changed to push on boot glides
Base available in black oxide and zinc plated only
The boot glides themselves would split and fall off after much use and themselves would be replaced in the 60's
For tops, see the shell generations page here
4th Generation base with self-leveling Nylon Glides on DAG (door guard) model
Fourth Generation
By the later 60's and into the 70's the feet on the base were replaced with Nylon Glides
This variant is most likely the highest selling base of any Eames arm chair.
Base available in black oxide and zinc plated and in chrome and colors in recent years
A variant of this base type is that used today since the re-launch in 2001
For tops, see the shell generations page here