FAQ

Economy Stainless Steel Stem Caster Model K3 with Polyurethane Wheel on Polyolefin

What is the Economy Stainless Steel Stem Caster Model K3 with Polyurethane Wheel on Polyolefin?

The Economy Stainless Steel Stem Caster Model K3 with Polyurethane Wheel on Polyolefin is a light-duty caster made from stamped 304 stainless steel, designed for wet, corrosive environments. It has a capacity of up to 300 lbs per caster (150 lbs when parked), features a double ball raceway swivel with a 1/2″ stainless steel rivet, and uses a 3/8″ axle bolt. The polyurethane tread on a polyolefin core, with sealed ball bearings and thread guards, ensures smooth, quiet rolling without marking floors.

What environments is the Economy Stainless Steel Stem Caster Model K3 suited for?

This caster is designed for food service plants, hospitals, research labs, schools, bakeries, and light industrial settings with smooth floors. Its 304 stainless steel construction resists rust in wet or corrosive conditions, making it ideal for washdown applications like animal labs or butcher tables, while meeting NSF and ROHS standards for hygiene.

What is the weight capacity of the Economy Stainless Steel Stem Caster Model K3?

The Model K3 has a capacity of up to 300 lbs per caster for manual movement and 150 lbs when parked. 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?

The polyurethane on polyolefin wheel operates in temperatures from -20°F to 180°F, suitable for light-duty applications. 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?

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 wheel is polyurethane on a polyolefin core with sealed ball bearings, offering chemical resistance, floor protection, and a capacity of 300 lbs per caster. 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?

The Model K3 comes with a polyurethane on polyolefin wheel with sealed ball bearings, but other wheel options are available, including polyolefin for standing loads to prevent flat spots. Wheel sizes range from 3″ to 5″ in diameter, and additional bearing types like Delrin or plain bore can be selected based on application needs.

Is the Economy Stainless Steel Stem Caster Model K3 resistant to chemicals?

Yes, the 304 stainless steel frame resists corrosion from water, chemicals, and washdowns. The polyurethane on polyolefin wheel also resists oils, cleaning solutions, and mild 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 wheel?

The polyurethane on polyolefin wheel has a Shore A durometer of approximately 90 (±5), providing a balance of durability and smooth rolling on flat surfaces, while protecting floors from marks in light-duty applications.

What is the lead time for the Economy Stainless Steel Stem Caster Model K3?

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.

What are the mounting specifications for the Economy Stainless Steel Stem Caster Model K3?

The caster uses a stem for mounting, with options like threaded stems, grip rings, or bolt holes (e.g., 1/2″ hole for a bolt), depending on the stem type selected. The wheel uses bearings for a 3/8″ axle, ensuring secure attachment for light-duty carts.

How should the Economy Stainless Steel Stem Caster Model K3 be maintained?

Maintenance is minimal due to its open swivel design and lack of grease fitting, which prevents water retention. Clean the caster regularly to remove debris, especially after washdowns, to maintain performance in corrosive environments.

Where can I buy the Economy Stainless Steel Stem Caster Model K3?

Buy the Model K3 directly from Caster City’s website or by calling 800-501-3808. With a fast lead time and online availability, it’s accessible for industries needing corrosion-resistant, washdown-ready casters.

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.