4'' ESD Swivel Stem Caster
- Electric conductivity (ESD) caster
- 4 inches (100 mm) diameter wheel
- 250 pounds (113 kg) loading capacity
- 2.5Mph maximum speed
Electric conductivity (ESD) 4 inches swivel stem caster with brake and a loading capacity of 250 pounds (113 kg) and a maximum speed of 2.5Mph. The stem-mount is made with a rubber bushing that expands into a 28 mm steel pipe to keep the wheel in place. See the Installation Steps tab for more information on how to install EW-4ESB casters.
Bolt M12 (12 mm) Length 2 1/4" (57.15 mm)
4 inches casters are made for:
- More or less long trips (30 to 50 feet)
- Frequent use (20 to 50 times a day)
- Carts weighting less than 400 pounds
- Narrow carts (between 16 and 24 in. wide)
EW-4ESB has a non-electric conductivity version: W-4ESB
For more frequent use or longer trips, we recommend considering the W-6PSB caster.
For carts that will go outside, roll on ramps or damaged floors, it's preferable to use 6 inches casters.
All casters are equipped with a precision ball bearing.
|Units per box (sold separately)||32|
|Unit weight pounds||1.8 lbs (0.8 kg)|
|Box dimensions inches||L18 X W11 X H12 in (L460 X W280 X H300 mm)|
|Wheels diameter inches||4'' (102 mm)|
|Wheel diameter inches||4 in (100 mm)|
|Total height inches||5 1/8 in (130 mm)|
|Tread width inches||1 1/8 in (28 mm)|
|Recommend surfaces||Asphalt, pavement, ceramic, carpet, flat steel, stone, wood, brick, linoleum, granit|
|Electric conductivity (ESD)||Yes|
|System operational temperature||-22°F to 158°F (-30°C to 70°C)|
|Loading capacity||250 lbs (113 Kg)|
|Bearing type||Precision ball bearing|
|Wheel material||Thermoplastic Rubber (TPR)|
|Brake type||Pedal brake|
|Radius||4 in (100 mm)|
|Maximum speed||2.5 Mph|
- Ensure you have the following parts:
- 1x W-3ESB
- 1x 28mm pipe of your choice
- 1x Wrench
- Ensure that the structure is levelled when supported by the pipes that will be wheeled. Otherwise, the height difference might cause the structure to sway.
- Flip the structure for a better access to the bottom pipes.
- Engage the wheel brake to lock the wheel.
- Tighten the nut located on the top of the stem for the rubber bushing to expend until it barely fits inside the pipe.
- Insert the wheel rod completely inside the pipe. Help yourself with a mallet if needed.
- Rotate the wheel clockwise until it grips firmly inside the pipe.
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