Aluminum Bases

Model: S4050
23.5" Aluminum Base w/ 50 mm Hub
  • 23.5” (600mm) overall diameter
  • 22.5” (572mm) caster socket diameter
  • 2” (50mm) center hub
  • 7/16” x 1" (11mm x 25mm) caster sockets
  • 2.5” (65mm) overall base height
  • Polished top with unpainted underside
  • Available with 45mm and 1” hub and alternate finishes
Model: S4154
23.5" Aluminum Base w/ 50mm Hub
  • 23.5” (600mm) overall diameter
  • 22.5” (572mm) caster socket diameter
  • 2” (50mm) center hub
  • 7/16” x 1" (11mm x 25mm) caster sockets
  • 2.5” (65mm) overall base height
  • Polished top with black underside
  • Available with 45mm and 1” hub and alternate finishes
Model: S4266
23.5” Aluminum Base w/ 50mm Hub
  • 23.5” (600mm) overall diameter
  • 22.5” (572mm) caster socket diameter
  • 2” (50mm) center hub
  • 7/16” x 1" (11mm x 25mm) caster sockets
  • 2.5” (65mm) overall base height
  • Black
  • Available with 45mm and 1” hub and alternate finishes
Model: S5066
23.5” Aluminum Base w/ 1” Hub
  • 23.5” (600mm) overall diameter
  • 22.5” (572mm) caster socket diameter
  • 1” (25.4mm) center hub 
  • 1/4-20 threaded hole in side of hub for set screw
  • 7/16” x 1" (11mm x 25mm) caster sockets
  • 2.5” (65mm) overall base height
  • Polished top with unpainted underside
  • Available with 45mm and 50mm hub and alternate finishes
Model: S5067
23.5” Aluminum Base w/ 1” Hub
  • 23.5” (600mm) overall diameter
  • 22.5” (572mm) caster socket diameter
  • 1” (25.4mm) center hub
  • 1/4-20 threaded hole in side of hub for set screw
  • 7/16” x 1" (11mm x 25mm) caster sockets
  • 2.5” (65mm) overall base height
  • Polished top with black underside
  • Available with 45mm and 50mm hub and alternate finishes
Model: S5378
23.5” Aluminum Base w/ 45mm Hub
  • 23.5” (600mm) overall diameter
  • 22.5” (572mm) caster socket diameter
  • 1.8” (45mm) center hub
  • 7/16” x 1" (11mm x 25mm) caster sockets
  • 2.5” (65mm) overall base height
  • Brushed aluminum with unpainted underside
  • Available with 1" and 50mm hub and alternate finishes
Model: S3803
26" Aluminum Base
  • 26” (660mm) overall diameter
  • 24.3” (616mm) caster socket diameter
  • 2” (50mm) center hub 44mm caster barrels
  • 7/16” x 1" (11mm x 25mm) caster sockets
  • 3.2” (80mm) overall base height
  • Polished aluminum
Model: S4164
27.5" Polished Aluminum Chair Base
  • 27.5” (700mm) overall diameter
  • 25.8” (656mm) caster socket diameter
  • 2” (50mm) center hub
  • 44mm caster barrels
  • 7/16” x 1" (11mm x 25mm) caster sockets
  • 3.2” (80mm) overall base height
  • Polished aluminum
Model: S3800B
27.5” Aluminum Base
  • ​27.5” (700mm) overall diameter
  • 25.8” (656mm) caster socket diameter
  • 2” (50mm) center hub
  • 44mm caster barrels
  • 7/16” x 1" (11mm x 25mm) caster sockets
  • 3.2” (80mm) overall base height
  • Brushed aluminum
Model: S4205-2
​26" Aluminum Base
  • 26” (660mm) overall diameter
  • 24.3” (616mm) caster socket diameter
  • 2” (50mm) center hub
  • 44mm caster barrels
  • 7/16” x 1" (11mm x 25mm) caster sockets
  • 3.2” (80mm) overall base height
  • Black
Model: S4180-2
27.5" Aluminum Base
  • 27.5” (700mm) overall diameter
  • 25.8” (656mm) caster socket diameter
  • 2” (50mm) center hub 44mm caster barrels
  • 7/16” x 1" (11mm x 25mm) caster sockets
  • 3.2” (80mm) overall base height
  • Black
​Model: S5498
​23.5" Aluminum Base
  • 23.5” (600mm) overall diameter
  • 22” (560mm) caster socket diameter
  • 2” (50mm) center hub
  • 42mm caster barrels
  • 7/16” x 1" (11mm x 25mm) caster sockets
  • 3.2” (80mm) overall base height
  • Polished aluminum with unpainted underside​
Model: S4429
​26" Aluminum Base
  • 26” (656mm) overall diameter
  • 24” (610mm) caster socket diameter
  • 2” (50mm) center hub
  • 42mm caster barrels
  • 7/16” x 1" (11mm x 25mm) caster sockets
  • 3” (76mm) overall base height
  • Polished aluminum
Model: S4430-1
27.5" Aluminum Base
  • 27.5” (700mm) overall diameter
  • 25.8” (656mm) caster socket diameter
  • 2” (50mm) center hub
  • 42mm caster barrels
  • 7/16” x 1" (11mm x 25mm) caster sockets
  • 3.2” (80mm) overall base height
  • Polished aluminum
Model: S4837-2
27.5” Aluminum Base
  • 27.5” (700mm) overall diameter
  • 25.8” (656mm) caster socket diameter
  • 2” (50mm) center hub
  • 42mm caster barrels
  • 7/16” x 1" (11mm x2 5mm) caster sockets
  • 3.2” (80mm) overall base height
  • Black
Model: S4428
27.5" High Arched Aluminum Base
  • 27” (686mm) overall diameter
  • 25.9” (659mm) caster socket diameter
  • 2” (50mm) center hub 26mm caster barrels
  • 7/16” x 1" (11mm x 25mm) caster sockets
  • 4.8” (122mm) overall base height
  • Polished aluminum
Model: S3218-1
27" High Arched Aluminum Base
  • 27” (680mm) overall diameter
  • 26” (660mm) caster socket diameter
  • 2” (50mm) center hub
  • 23mm caster barrels
  • 7/16” x 1" (11mm x 25mm) caster sockets
  • 5.6” (142mm) overall base height
  • Polished aluminum
  • Also available in black (S5491)
Model: S4310
​19” Arched Aluminum Base
  • 19.3” (489mm) overall diameter
  • 17.7” (450mm) caster socket diameter
  • 2” (50mm) center hub
  • 40mm caster barrels
  • 7/16” x .83" (11mm x 21mm) caster sockets
  • 2.3” (59mm) overall base height
  • Polished aluminum
  • Not intended for seating applications
Model: S5257
​​28” Aluminum Base
  • 28” (710mm) overall diameter
  • 27.2” (690mm) caster socket diameter
  • 2” (50mm) center hub
  • 20mm caster barrels
  • 7/16” x 1" (11mm x 25mm) caster sockets
  • 2.75” (70mm) overall base height
  • Polished aluminum
Model: S5197
20” Round Aluminum Base
  • 20” (503mm) overall diameter
  • 2” (50mm) center hub
  • 2.7” (68mm) overall base height
  • 12 pre-installed black glides 
  • Polished aluminum
Model: S5198
​27.5” Flat Aluminum Base
  • 27.5” (704mm) overall diameter
  • 26” (660mm) caster socket diameter
  • 2” (50mm) center hub
  • 40mm caster barrels
  • 7/16” x 1" (11mm x 25mm) caster sockets
  • 2.6” (65mm) overall base height
  • Polished aluminum

Plastic Bases

Model: S4123
24" Black Plastic Base
  • 24" (610mm) overall diameter
  • 22" (558mm) caster socket diameter
  • 2" (50mm) center hub
  • 45mm caster barrels
  • 7/16" x 1" (11mm x 25mm) caster sockets
  • 3" (75mm) overall base height
  • MADE IN THE U.S.A.
Model: S4125
26" Black Plastic Base
  • 26" (660mm) overall diameter
  • 24" (609mm) caster socket diameter
  • 2" (50mm) center hub
  • 45mm caster barrels
  • 7/16" x 1" (11mm x 25mm) caster sockets
  • 3" (75mm) overall base height
  • MADE IN THE U.S.A.
Model: S4121-2
28" Plastic Base
  • 28" (710mm) overall diameter
  • 26" (660mm) caster socket diameter
  • 2" (50mm) center hub
  • 45mm caster barrels
  • 7/16" x 1" (11mm x 25mm) caster sockets
  • 3" (75mm) overall base height
  • MADE IN THE U.S.A.
Model: S4147
24" Plastic Base
  • 24" (610mm) overall diameter
  • 22" (558mm) caster socket diameter
  • 2" (50mm) center hub
  • 42mm caster barrels
  • 7/16" x 1" (11mm x 25mm) caster sockets
  • 3" (75mm) overall base height
  • MADE IN THE U.S.A.
​Model: S4265
25.5” Plastic Base
  • 25.5” (650mm) overall diameter
  • 24” (612mm) caster socket diameter
  • 2” (50mm) center hub
  • 45mm caster barrels
  • 7/16” x 1" (11mm x 25mm) caster sockets
  • 3” (75mm) overall base height
  • MADE IN THE U.S.A.
Model: S5649
27.5” High Arched Plastic Base
  • 27.5” (700mm) overall diameter
  • 26” (660mm) caster socket diameter
  • 2” (50mm) center hub
  • 26mm caster barrels
  • 7/16” x 1" (11mm x 25mm) caster sockets
  • 5.6” (142mm) overall base height
  • MADE IN THE U.S.A.

Steel Bases

View Drawing
Model: S5433-A 
Pedestal Plate
  • Accepts 50mm gas cylinder
  • 6.875" (175mm) square plate
  • 5.5" (140 mm) square mounting hole pattern
  • 3.15" (80mm) center hub height
  • Black
  • MADE IN THE U.S.A.
Model: S5441-A
Table Base
  • 24” x 18” 
  • Accepts 50mm gas lift
  • 1/4-20 threaded caster sockets
  • Includes 4 black plastic plugs
  • Black
  • MADE IN THE U.S.A.
Model: ​S5469
22” Steel Swivel Base
  • .75” steel tube ring w/ 5.5” and 8” square mounting hole patterns
  • Pre-installed 10.25” square swivel w/ 8” hole pattern (S1235-2)
  • 65 3/8” ball bearings
  • 9 non-marring black glides
  • Black
Model: S5454
​24” Steel Swivel Base
  • .75” steel tube ring w/ 5.5” and 8” square mounting hole patterns 
  • Pre-installed 10.25” square swivel w/ 8” hole pattern (S1235-2) 
  • 65 3/8” ball bearings 
  • 9 non-marring black glides 
  • Black
​Model: S5471
​25.5” Steel Swivel Base
  • .75” steel tube ring w/ 5.5” and 8” square mounting hole patterns 
  • Pre-installed 10.25” square swivel w/ 8” hole pattern (S1235-2) 
  • 65 3/8” ball bearings 
  • 9 non-marring black glides 
  • Black

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