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Stem Casters for Cleanroom Carts

Stem Casters for Cleanroom Carts

The casters we offer on our carts are selected specifically to provide optimal performance in the cleanroom environment. They feature smooth-profile designs to enhance cleanliness, nonmarking materials to protect cleanroom floors, and durable construction to ensure a long service life. Stem casters mount inside the bottom of the vertical posts used in our carts.

Polyurethane is a synthetic rubber with significant resistance to temperature, shock, fuels, oxidation, detergent and oils. It offers a long life, with the wear resistance of hard rubber and the resilience of soft rubber, and high floor protection for use in a cleanroom environment.

These casters are available in 4" (102 mm) and 5" (127 mm)  wheel diameters. For a given tire material, the larger the wheel, the easier it will roll. While 4" (102 mm) casters are suitable for light loads and ideal floor condition, 5" (127 mm)  casters should otherwise be considered optimal. Select larger sizes if you anticipate very rough surfaces or obstacles such as elevator entrances or door sills.

Stem Casters
Wheel Tread Wheel Diameter
inches
(mm)
Type Face
inches
(mm)
LoadRating
lbs
(kg)
Weight
lbs
(kg)
 
Cat. # Price
Polyurethane 5
(127)
Stem/Swivel 1.25
(32)
300
(136)
2.125
(0.96)
1303-43 Price
Polyurethane 5
(127)
Stem/Brake 1.25
(32)
300
(136)
2.25
(1)
1303-44 Price
Polyurethane 5
(127)
Stem/Rigid 1.25
(32)
300
(136)
2
(0.9)
1303-45 Price
High Modulus 5
(127)
Stem/Swivel 1.25
(32)
300
(136)
2.5
(1.1)
2080-55 Price
High Modulus 5
(127)
Stem/Brake 1.25
(32)
300
(136)
2.625
(1.2)
2080-56 Price
High Modulus Donut 5
(127)
Stem/Swivel 1.25
(32)
250
(113)
2.5
(1.1)
2080-57 Price
High Modulus Donut 5
(127)
Stem/Brake 1.25
(32)
250
(113)
2.625
(1.2)
2080-58 Price
High Modulus 5
(127)
Stem/Swivel 1.25
(32)
150
(68)
2.5
(1.1)
2650-96 Price
Donut/Washable 5
(127)
Stem/Brake 1.25
(32)
150
(68)
2.625
(1.2)
2650-97 Price
Notes:
1. Stem casters are shipped with donut bumpers at no additional charge.
2. Rigid casters are held in place by a connection channel. When ordering rigid casters, provide the shelf depth.
3. When adding casters to an InterMetro shelving unit to create a mobile storage system, specify caster-compatible mounting posts.
Additional Technical Data:
Stem Caster Technical Data.pdf Plate Caster Technical Data.pdf

High Modulus Cleanroom-Approved casters provide vibration dampening in controlled environments. Each includes a nickel horn, resilient tread wheel, dust cover and Celcon bearing. Resists virtually all cleaners, solvents, oils and acids. Not recommended for wet or humid environments.

High Modulus Cart-Washable Cleanroom-Approved casters can be washed with the power washers commonly used to clean carts. They are grease sealed with zerk fittings in the swivel and axle.

A Note on Load Ratings
"Rated Capacity" is, by definition, the maximum load per caster recommended by the manufacturer for use over smooth floors at operating speeds of 3 mph or less. As a general rule, the true load-bearing capacity of a four-caster cart is rarely more than three times the rated capacity of a single caster. Unbalanced loads, acceleration forces, cornering, uneven floors, and other obstacles place too great a demand on each wheel to permit extensive operation at full rated capacity.

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