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Most of our casters are assembled and dispatched within 24-48 hours.
Technical Specifications
Wheel Diameter
4"
Caster City Recommendation
Ollie Recommends!
Non-Marking
Yes
Stainless Steel Grade
304 Stainless Steel
Durometer
60D ± 5
ISO 9001
ISO 9001:2015 Certified
Wheel Width
1.25"
Wheel Bearing
Delrin
Maximum Capacity (lbs)
300 lbs
Overall Height
5-1/8"
Swivel Radius
3-1/4"
Color
Blue
Stainless Steel Stem Add Ons
ER17, ER21, ER25, ER26, ER27, ER28, ER29, ER9, GR91, GR95, HK1/2, RD3/4, SQ3/4, SQ7/8-GR, TS-S1, TS-S2, TS-S3, TS-S7, TS22, TS26N, TS61
Brake Codes
PTB, TB
Lube Axle Code
LA
Weight
2.75 lbs
Description
Caster City’s Economy Stainless Steel Model K3 Stem Caster delivers corrosion-resistant swivel performance in washdown environments at a lower cost than the standard stainless Model 3. Constructed from 304 stainless stamped steel, this stem caster inserts into equipment socket holes for fast installation without drilling or bolting. Threaded, grip ring, and expanding adapter stems are available. The swivel section features two rows of ball bearings on polished smooth raceways with an open design that eliminates the dust cap and grease fitting so water drains through the swivel instead of collecting. The swivel is held together by a 1/2″ diameter rivet with a 3/8″ diameter axle for wheel mounting. Capacity up to 350 lbs per caster depending on wheel and stem; limit to 1,000 lbs on a set of 4. NSF listed and RoHS compliant for bakery racks, catering equipment, and sanitary processing areas.
This blue all polyurethane caster wheel makes an excellent choice for institutional applications where sanitary conditions and washdowns are critical. Solid polyurethane wheels are fantastic solutions for heavy wash-down and food grade environments. The solid polyurethane wheel provides a one piece molded solution which eliminates the issues of tread bond failures making them durable solutions for tough environments. These wheels are non-marking and non-conductive. Solid polyurethane wheels are highly resistant to oil, grease, water and most chemicals and solvents even up to 10% acidity. The “AP” blue all polyurethane industrial caster wheel is offered with a variety of bearing choices to suit your application, including stainless steel choices such as stainless precision sealed ball bearings or roller bearings. This industrial caster wheel comes with a durometer of Shore 60-65D and the temperature range is -20° to 180°F. These wheels are designed for use in a wet environment and they eliminate the possibility of tire separation. These wheels are not recommended for applications involving shock, overloading, abuse, obstructions, poor floors, or for storage (standing) loads. Ideal for food processing equipment, hospitals, and pharmaceutical laboratories.
FAQ
Economy Stainless Steel Stem Caster Model K3 with All Polyurethane Wheel
What is the Economy Stainless Steel Stem Caster Model K3 with All Polyurethane Wheel?
The Economy Stainless Steel Stem Caster Model K3 with All Polyurethane Wheel is a light-duty caster made from stamped 304 stainless steel, designed for wet, corrosive environments. It features a 4″ blue all polyurethane (AP) wheel (also available in 3″ to 5″ and 4″ to 8″ diameters, 1-1/4″ or 2″ widths) with a Shore 60D-65D durometer, operating from -20°F to 180°F. The swivel has a double ball raceway with a 1/2″ stainless steel rivet, a 3/8″ axle bolt, and supports up to 1000 lbs for a set of four casters.
What environments is the Economy Stainless Steel Stem Caster Model K3 with All Polyurethane Wheel suited for?
This caster is designed for pharmaceutical labs, hospitals, and food processing plants requiring sanitary designs. Its 304 stainless steel frame and all polyurethane wheel resist rust and chemicals in wet or corrosive conditions, making it suitable for washdown applications while meeting NSF and ROHS standards for hygiene.
What is the weight capacity of the Economy Stainless Steel Stem Caster Model K3 with All Polyurethane Wheel?
The Model K3 with All Polyurethane Wheel supports up to 1000 lbs for a set of four casters (250 lbs per caster) for manual movement. To avoid overloading, divide the total equipment load by the number of casters, ensuring each caster’s capacity exceeds the calculated load for uneven surfaces or dynamic forces.
What is the temperature range of the Economy Stainless Steel Stem Caster Model K3 with All Polyurethane Wheel?
The all polyurethane wheel operates in temperatures from -20°F to 180°F, suitable for light-duty applications in washdown or sanitary settings. For higher temperature needs, such as autoclaving, consult Caster City at 800-501-3808 to explore alternative wheel options.
What are the key features of the Economy Stainless Steel Stem Caster Model K3 with All Polyurethane Wheel?
It features a 304 stainless steel frame, a double ball raceway swivel with a 1/2″ rivet, and a 3/8″ axle bolt with an optional lube axle. The 4″ all polyurethane wheel (Shore 60D-65D) is non-marking, non-conductive, and has no metal center, with bearing options like roller, Delrin, or sealed precision ball bearings in stainless steel. It lacks a dust cap and grease fitting for better washdown drainage.
What wheel options are available for the Economy Stainless Steel Stem Caster Model K3 with All Polyurethane Wheel?
The Model K3 comes with a 4″ all polyurethane wheel (also available in 3″ to 5″ and 4″ to 8″ diameters, 1-1/4″ or 2″ widths) with bearing options including roller bearings, Delrin bearings, or sealed precision ball bearings, all available in stainless steel. These wheels are designed for sanitary and washdown applications but not for shock, overloading, or poor floors.
Is the Economy Stainless Steel Stem Caster Model K3 with All Polyurethane Wheel resistant to chemicals?
Yes, the 304 stainless steel frame resists corrosion from water, chemicals, and washdowns. The all polyurethane wheel resists oils, cleaning solutions, solvents, and acids, making it suitable for food processing, labs, and healthcare settings with frequent sanitation.
What is the durometer of the Economy Stainless Steel Stem Caster Model K3 with All Polyurethane Wheel?
The all polyurethane wheel has a Shore D durometer of 60 to 65, providing a hard, durable surface that withstands light-duty use while maintaining smooth rolling and floor protection in sanitary applications.
What is the lead time for the Economy Stainless Steel Stem Caster Model K3 with All Polyurethane Wheel?
The Model K3 has a fast lead time, typically 2 days, allowing quick delivery for industrial buyers. Orders can be placed through Caster City’s website or by calling 800-501-3808 for prompt processing.
The Model K3 supports a wide range of stem types for mounting:
Expanding Rubber Stems (for round tubes, secured with a knurled nut):
ER9: Fits 7/8″ to 1″ round tubes, 1-7/8″ length, expands 0.730″ to 0.851″.
ER27: Fits 7/8″ to 1″ round tubes, 1-7/8″ length, expands 0.852″ to 0.927″.
ER28: Fits 1″ to 1-1/16″ round tubes, 1-7/8″ length, expands 0.928″ to 1.029″.
ER29: Fits 1-1/16″ to 1-1/8″ round tubes, 1-7/8″ length, expands 1.030″ to 1.140″.
ER17: Fits 1-1/8″ to 1-1/4″ round tubes, 2-1/4″ length, expands 1.141″ to 1.303″.
ER25: Fits 1-1/2″ to 1-9/16″ round tubes, 2-1/4″ length, expands 1.300″ to 1.425″.
ER26: Fits 1-5/8″ to 1-11/16″ round tubes, 2-1/4″ length, expands 1.426″ to 1.589″.
ER21: Fits 1-7/8″ to 1-9/16″ round tubes, 2-1/4″ length, expands 1.590″ to 1.950″.
Grip Ring Stems (for sockets, secured by a grip ring):
GR91: 7/16″ diameter, 1-7/16″ length, 1-1/8″ usable length below grip ring.
GR95: 7/8″ diameter, 1-7/8″ length, 1-1/2″ usable length below grip ring.
Square and Round Metal Stems (for square or round metal tubes):
SQ3/4: 3/4″ square stem, 1-1/4″ length, fits 3/4″ square tubes, 1-1/8″ usable length.
SQ7/8-GR: 7/8″ round stem with grip ring, 2-1/4″ length, fits 7/8″ round tubes, 1-1/2″ usable length.
SQ7/8: 7/8″ round stem, 2-1/4″ length, fits 7/8″ round tubes, 1-1/2″ usable length.
Threaded Stems (for threaded holes or with a nut):
TS81: 3/8-16 thread, 1″ length.
TS82: 3/8-16 thread, 1-1/2″ length.
TS22: 1/2-13 thread, 1-1/2″ length.
TS26N: 1/2-13 thread, 2-3/4″ length.
TS5/8: 5/8-11 thread, 1-3/4″ length.
TS3/4: 3/4-10 thread, 1-3/4″ length.
TSC1: 5/8-11 thread, 4″ length.
TSC2: 3/4-10 thread, 4″ length.
TSC3: 3/4-10 thread, 6″ length.
These stem types and sizes ensure compatibility with a wide range of equipment setups in light-duty applications.
Our #1 goal is to help you find the best caster and wheels for your needs. If you need help finding the right casters, contact our team of professionals. You can also customize many of our casters with a variety of options such as swivel locks, wheel brakes and zerk fittings. We ship our products from assembly plants in Georgia, Pennsylvania, Virginia, Texas, Nevada and Canada. Whether you’re a one-man shop or a global giant, we can provide you with: We specialize in Business to Business, however, consumer orders are gladly accepted and we can provide you with:
- Fastest Lead Time in the Industry
- Caster performance data.
- Comparative data.
- Customized caster solutions.
- Help with caster solutions.
- Case studies by industry or application.
- Manufacturer and Distributor of over $25 million dollars in Finished Component Parts
- Majority of Orders Processed and Shipped in 2 Days or Less
If you have any questions about your measurements, please call 800-501-3808
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