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4″ Polyolefin Wheel – Stainless Steel Stem 3

$81.83

PN: SS-3PB4X
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, etc… 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 +$2.00TS22 | TS22 - Threaded Stem 1/2"-13 x 1-1/2" LongTS26N | TS26N - Threaded Stem 1/2"-13 x 2-3/4" Long (+$3.00) +$3.00GR82 | GR82 – Dual Grip Ring Stem 1-1/8″ Diameter x 2-3/16″ Long +$40.00GR91 | 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 - Pedal on side of wheel +$10.00PTB | PTB - Pedal on top of wheel +$10.00TL | TL - Total Lock - Lock Swivel & Wheel +$30.00
Volume Pricing on Inquiry. Call us: 800-501-3808

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Technical Specifications

4
Wheel Diameter
4
Ollie Recommends!
Caster City Recommendation
Ollie Recommends!
Yes
Non-Marking
Yes
304 Stainless Steel
Stainless Steel Grade
304 Stainless Steel
1 1/4
Wheel Width
1 1/4
Plain
Wheel Bearing
Plain
300 lbs
Maximum Capacity (lbs)
300 lbs
5 1/8"
Overall Height
5 1/8"
3 1/4
Swivel Radius
3 1/4
Black
Color
Black
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
Lube Axle Code
LA
Weight
Weight
2.75 lbs

Description

4″ Polyolefin ( Black ). Swivel Bearing Seal & Grease Fitting. Shown in photo with 5″ wheels. The Stainless Steel Model 3 stem caster frames are constructed with stamped steel. This stainless steel stem caster uses a ⅜” diameter axle and the swivel caster raceway is held together by a ½” diameter rivet. The swivel bearing of stainless steel stem Caster Model 3 is defined by two rows of ball bearings to help with thrust loads and changing direction. There is a solid cover over the swivel raceways to shield them from dirt and dust. The Stainless Steel Stem Caster Model 3 performs best if you limit the load to no more than 1000 lbs on a set of 4 Model 3 casters.

The PB Black Polyolefin Wheel (Plain Bore) is a versatile option for the Stainless Steel Swivel Stem Caster Model SS-3, designed for light-duty institutional stainless steel caster needs in warehouses, retail spaces, and light industrial areas, supporting up to 300 lbs per wheel on smooth floors from -20°F to 180°F, with a 1.25-inch width and available in 3”, 4”, and 5” diameters, featuring a solid black polyolefin construction, equipped with a plain bore for a 3/8” axle and either stainless steel or delrin spanners for smooth rolling, offering non-marking performance, resistance to water, chemicals, oils, and solvents, and no flat-spotting during extended parking, though not suited for shock, overloading, abuse, obstructions, or rough floors, making it a reliable choice for dry or mildly wet environments. The stainless steel caster assembly, crafted from 304 stainless steel with a stamped steel design, includes raceway seals for high-temp usage (up to 400°F), a zerk fitting, and a dust cover to protect the double ball bearing swivel raceways, ensuring smooth movement and allowing specialized grease use, with modular stem options including grip ring stems, threaded stems, round stems, square stems, stems with cross holes (both round and square), and expanding rubber stems for versatile mounting in institutional equipment like carts or tables, offering brake options like the Total Locking Brake (TL), Top Lock Brake (TB), and Plastic Top Lock Brake (PTB), with the stainless steel assembly being NSF and ROHS compliant, providing corrosion resistance in wet environments for reliable performance in sanitary or washdown settings; note that threaded stem casters should not be used as a leveling device, and capacity ratings are based on the weight being directly on the top of the swivel bearing, not above it on the threaded stem.

Application Use

  • Healthcare (Up to 350 lbs): Hospital beds, medical carts, IV poles — Non-marking, rubber wheels
  • Education (Up to 300 lbs): Classroom chairs, library carts — Polypropylene, rubber wheels
  • Offices (Up to 300 lbs): Office chairs, desks — Soft rubber, nylon wheels
  • Retail (Up to 300 lbs): Display racks, shopping carts — Non-marking, polyurethane wheels
  • Food Service (Up to 1250 lbs, NSF certified): Food carts, kitchen equipment — Stainless steel, high-temp wheels
  • Industrial (Up to 350 lbs): Moving dollies, stocking carts — Hard rubber, nylon wheels
  • Hospitality (Up to 300 lbs): Banquet tables, laundry carts — Chrome, rubber wheels
  • Warehouses (Up to 1500 lbs): Shelving, carts — Polyurethane, steel wheels
  • Manufacturing (Up to 350 lbs): Assembly lines, material handling — Phenolic, rubber wheels

TYPES OF STEMS FOR THIS MODEL

NO STEM:

  • HK1/2 – Single 1/2″ Hole For Your Own 1/2″ Diameter Bolt

THREADED STEMS:

  • TS61 – Threaded Stem 3/8″-16 x 1″ Long
  • TS22 – Threaded Stem 1/2″-13 x 1-1/2″ Long
  • TS26N – Threaded Stem 1/2″-13 x 2-3/4″ Long
  • TSC1 – Threaded Stem 1/2″-13 x 4″ Long
  • TSC2 – Threaded Stem 5/8″-11 x 4″ Long
  • TSC3 – Threaded Stem 3/4″-10 x 6″ Long
  • TSC4 – Threaded Stem 3/4″-10 x 4″ Long

GRIP-RING STEMS + SQUARE AND ROUND METAL STEMS:

  • GR91 – Grip Ring Stem 7/16″ Diameter x 1-3/8″ Long
  • GR95 – Grip Ring Stem .846″ x 2-3/16″ (For 7/8″ Inner Diameter “Metro” Shelving)
  • SQ7/8-GR – 7/8″ Plain Square Grip Ring (To Drill Your Own Cross-Holes)
  • RD3/4 – 3/4″ Round – 3 Cross Holes
  • SQ3/4 – 3/4″ Square – 3 Cross Holes

EXPANDING RUBBER STEMS:

  • ER9 – Expanding Rubber for 3/4″ Inner Diameter
  • ER27 – Expanding Rubber for 7/8″ Inner Diameter
  • ER28 – Expanding Rubber for 1″ Inner Diameter
  • ER29 – Expanding Rubber for 1-1/8″ Inner Diameter
  • ER17 – Expanding Rubber for 1-1/4″ Inner Diameter
  • ER25 – Expanding Rubber for 1-3/8″ Inner Diameter
  • ER26 – Expanding Rubber for 1-1/2″ Inner Diameter
  • ER21 – Expanding Rubber for 1-13/16″ Inner Diameter

Polyolefin Caster Wheels from Caster City

Polyolefin Caster Wheels are injection molded from a blend of thermoplastic polymers, forming a one-piece solid sanitary design that prioritizes durability and hygiene. These wheels are available with a plain bore, precision sealed ball bearings, roller bearings, or Delrin bearings for smooth operation across various light to medium-duty applications. As a cost-effective and lightweight option, polyolefin wheels are hard, non-marking, and non-conductive, offering superior resistance to water, chemicals, solvents, acids, grease, oils, and gasoline. Their unique composition ensures excellent abrasion resistance and impact absorption, making them a reliable choice for environments where sanitation and floor protection are essential.

Polyolefin Caster Wheels are particularly suited for wet and corrosive applications due to their outstanding resistance to most commonly encountered liquids, ensuring long-lasting performance. Their slightly crowned tread enhances rollability and maneuverability, and they do not develop flat spots when parked for extended periods. With a hardness of 65–70 Shore D, these wheels provide floor protection, low noise, and easy cleaning, while remaining impervious to sterilization processes. However, they can become brittle in cold, dry environments like refrigerated storerooms and should not be used in freezers or heat applications above 180°F during intermittent usage, such as rack washers.

Ideal for bakeries, food processing, dairies, meat packaging, laundries, supermarkets, warehouses, manufacturing plants, cleanrooms, medical facilities, and offices, these wheels excel where chemical resistance and non-marking performance are critical. Capable of handling impacts and loads up to 900 lbs per wheel depending on size, they offer economical mobility in harsh conditions. For reliable, sanitary, and floor-friendly caster solutions tailored to your needs, contact Caster City to explore custom configurations of our durable Polyolefin Caster Wheels.

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
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