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3″ Red Polyurethane on Polyolefin – Stainless Steel Stem K3

$55.84

PN: SS-K3RG3X
In Stock
Please select any add ons you require for your caster and if you are selecting multiple option types, add all of the quantity for the first choice and then make your selections for the second, third, fourth, etcโ€ฆ choices. (Example: 2 With Brakes and 2 Without Brakes)

Click Here To See Stem Options (Modular Stems available for variety of fastening needs)

HK1/2 | HK1/2 - Single 1/2" Bolt Hole For Your Bolt +$1.00TS61 | TS61 - Threaded Stem 3/8"-16 x 1" Long +$3.00TS22 | TS22 - Threaded Stem 1/2"-13 x 1-1/2" LongTS26N | TS26N - Threaded Stem 1/2"-13 x 2-3/4" Long +$3.00TSC1 | TSC1 - Threaded Stem 1/2"-13 x 4" Long +$25.00TSC2 | TSC2 - Threaded Stem 5/8"-11 x 4" Long +$25.00TSC3 | TSC3 - Threaded Stem 3/4"-10 x 6" Long +$25.00TSC4 | TSC4 - Threaded Stem 3/4"-10 x 4" Long +$25.00GR91 | GR91 - Grip Ring Stem 7/16" Diameter x 1-3/8" Long +$27.00GR95 | GR95 - Grip Ring Stem .846" x 2-3/16" (For 7/8" Inner Diameter "Metro" Shelving) +$27.00SQ7/8-GR | SQ7/8-GR - 7/8" Plain Square Grip Ring (To Drill Your Own Cross-Holes) +$27.00RD3/4 | RD3/4 - 3/4" Round - 3 Cross Holes +$27.00SQ3/4 | SQ3/4 - 3/4" Square - 3 Cross Holes +$27.00ER9 | ER9 - Expanding Rubber for 3/4" Inner Diameter +$25.00ER27 | ER27 - Expanding Rubber for 7/8" Inner Diameter +$25.00ER28 | ER28 - Expanding Rubber for 1" Inner Diameter +$25.00ER29 | ER29 - Expanding Rubber for 1-1/8" Inner Diameter +$25.00ER17 | ER17 - Expanding Rubber for 1-1/4" Inner Diameter +$25.00ER25 | ER25 - Expanding Rubber for 1-3/8" Inner Diameter +$25.00ER26 | ER26 - Expanding Rubber for 1-1/2" Inner Diameter +$25.00ER21 | ER21 - Expanding Rubber for 1-13/16" Inner Diameter +$25.00

Please Select a Brake Option.

No BrakeTB | TB - Metal Pedal on side of wheel +$10.00PTB | PTB - Plastic Pedal on top of wheel (Easier To Use) +$10.00TL | TL - Total Locking Brake +$30.00
Volume Pricing on Inquiry. Call us: 800-501-3808

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Technical Specifications

3
Wheel Diameter
3
Ollie Recommends!
Caster City Recommendation
Ollie Recommends!
Yes
Non-Marking
Yes
304 Stainless Steel
Stainless Steel Grade
304 Stainless Steel
90-95A
Durometer
90-95A
1 1/4
Wheel Width
1 1/4
Precision Sealed
Wheel Bearing
Precision Sealed
200 lbs
Maximum Capacity (lbs)
200 lbs
4 1/16"
Overall Height
4 1/16"
2 7/8
Swivel Radius
2 7/8
Red
Color
Red
ER17ER21ER25ER26ER27ER28ER29ER9GR91GR95HK1/2RD3/4SQ3/4SQ7/8-GRTS-S1TS-S2TS-S3TS-S7TS22TS26N
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
PTBTB
Brake Codes
PTB, TB
LA
Lubeย Axleย Code
LA
Weight
Weight
2.25 lbs

Description

The Economy Stainless Steel Stem Caster Model K3 with Polyurethane Wheel on Polyolefin is built for wet, corrosive environments where hygiene and durability are critical. Made from stamped 304 stainless steel, it resists rust and handles harsh conditions like those in labs, hospitals, or food plants. Its swivel design skips the dust cap and grease fitting, featuring a drain hole to shed water and reduce maintenance, making it a cost-effective choice for washdown applications with a capacity of up to 300 lbs per caster (150 lbs when parked).ย  This injection-molded polyurethane on polyolefin wheel comes in 4 colors: red, gray, black, or blue.

This caster uses a polyurethane tread on a polyolefin core, paired with sealed ball bearings and thread guards, ensuring smooth, quiet rolling without marking floors. Itโ€™s designed for smooth surfaces, offering resistance to chemicals and corrosion, but isnโ€™t suited for rough terrain or heavy shocks. The swivel bearing has a double ball raceway held by a 1/2″ stainless steel rivet, and the wheel uses a 3/8″ axle bolt with a latching nut, with an optional stainless steel lube axle available for added lubrication.

The Model K3 fits applications like research labs, hospitals, food service plants, schools, bakeries, and light industrial settings with smooth floors. Itโ€™s ideal for institutional environments needing quiet, clean operation and meets NSF and ROHS standards for hygiene. Available online at Caster City with a fast lead time, this caster provides reliable, low-maintenance mobility for light-duty manual use in demanding conditions.

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 casterโ€™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 -20ยฐF to 180ยฐF, 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 (ยฑ5), 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 Cityโ€™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 Cityโ€™s website or by calling 800-501-3808. With a fast lead time and online availability, itโ€™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.

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 youโ€™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 Partsย 
  • Majority of Orders Processed and Shipped in 2 Days or Less
Call us during the design phase of your project, we can help you avoid costly modifications once fabrication has started. We guarantee what we recommend.Industrial & Heavy Duty Casters | Caster City

If you have any questions about your measurements, please call 800-501-3808