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4″ Phenolic Wheel – Stem Caster K3

$32.25

PN: K3TM4X
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)

GR95 | GR95 - Grip Ring Stem .846" x 2-3/16" (For 7/8" Inner Diameter "Metro" Shelving)SQ3/4 | SQ3/4 - 3/4" Square-3 Cross HolesSQ7/8 | SQ7/8 - 7/8" Square-3 Cross HolesSQ7/8-8GR | SQ7/8-8GR - 7/8" Plain Square Grip Ring (To Drill Your Own Cross-Holes)

Please Select a Brake Option.

No BrakeTB | TB - Metal Pedal on side of wheel +$3.00PTB | PTB - Plastic Pedal on top of wheel (Easier To Use) +$6.00TL | TL - Total Locking Brake +$6.00
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
1 1/4
Wheel Width
1 1/4
Plain
Wheel Bearing
Plain
300 lbs
Maximum Capacity (lbs)
300 lbs
5"
Overall Height
5"
3 1/4
Swivel Radius
3 1/4
Black
Color
Black
GR95SQ3/4SQ7/8SQ7/8-GR
K3 Stem Add Ons
GR95, SQ3/4, SQ7/8, SQ7/8-GR
Weight
Weight
3.25 lbs

Description

4″ Phenolic WheelPlain Bore – No bearings in the Wheel.  Shown in photo with 5″ Wheel.  Phenolic caster wheels are a hard composition, non-marking wheel that is excellent for large loads that do not move often. Phenolic caster wheels are capable of withstanding the impact shocks of obstructions or shock loads, and will not develop a flat spot if left parked for a prolonged period. Phenolic can absorb water and other chemicals if excessive exposure occurs. This caster wheel comes with either a roller bearing or precision sealed ball bearings. This wheel comes in diameters ranging from 3” to 18” and the width of the wheels ranges from 1-¼” to 4”. All phenolic wheels have a Durometer of Shore D 90 and the temperature range is -40° to +250° F. Contact us if you need help with placing an order: 800-501-3808

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
  • TS-S1 – Threaded Stem 1/2″-13 x 4″ Long
  • TS-S2 – Threaded Stem 5/8″-11 x 4″ Long
  • TS-S3 – Threaded Stem 3/4″-10 x 6″ Long
  • TS-S7 – 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

Phenolic Caster Wheels from Caster City

Our Phenolic Caster Wheels, made from macerated canvas mixed with phenolic resin and molded under high pressure and temperature are a cost-effective, hard-composition, non-marking solution ideal for supporting heavy stationary loads that move infrequently. With a hardness comparable to polished maple flooring and a Durometer of Shore D 90, these wheels are designed to handle large loads comparable to metal wheels without developing flat spots, even when parked for prolonged periods under load. Available in diameters from 3” to 18” and widths from 1-¼” to 4”, they come standard with roller bearings or optional precision sealed ball bearings, making them perfect for smooth concrete surfaces in industrial settings like warehouses or manufacturing facilities.

These phenolic caster wheels are highly resistant to oil, grease, gasoline, and mild acids, and can withstand shock loads and impacts from small obstructions. They are recommended for storage loads without permanent set and offer slight floor wear, except on already deteriorating surfaces. For enhanced performance, a laminated unmacerated tread option provides 25% more capacity and greater chip resistance, though the wheel material may chip or cut from contact with steel plates or rough surfaces. With a temperature range of -40°F to +250°F, and intermittent use up to 300°F, these wheels are built for durability in dry environments where they excel in supporting heavy static loads.

While Phenolic Caster Wheels are tough and versatile, they are not suitable for wet applications or environments with excessive exposure to water, oil, or chemicals, as they can slowly absorb these substances and fail over time. For applications involving routine moisture or strong acids and alkaline solutions, consider alternative wheel materials. Ideal for dry, high-capacity settings requiring impact resistance and floor protection, these wheels are a reliable, economical choice. Contact Caster City at 800-501-3808 for assistance with custom configurations or to place an order for our durable Phenolic Caster Wheels.

FAQ

What is the Stem Caster Model K3?

The StemCaster Model K3, also known as a stud caster due to its metal stem design, is a durable institutional stem caster designed for reliability. Made with stamped steel and a bright zinc-plated finish for corrosion resistance, this light duty industrial caster supports up to 350 pounds per caster. It is NSF listed, making it ideal for institutional equipment in environments like food service and healthcare.

What is the Stem Caster Model K3 made of?

The StemCaster Model K3 features a stamped steel construction for durability, ensuring it can handle frequent use in demanding settings. Its external metal parts are bright zinc-plated to resist corrosion.

What are the mounting specifications for the Stem Caster Model K3?

Mounting plate: 2-3/8” x 3-5/8”; Slotted hole pattern: 1-3/4” x 2-7/8” to 3”; Bolt size: 5/16”.

What stem options are available?

  • Square Stems: SQ3/4 (3 x 1/4 CRX DRL), SQ7/8 (3 x 1/4 CRX DRL), SQ7/8-GR (5/16 CRX DRL)
  • Grip Ring Stems: GR91 (7/16, 1-3/8″ length), GR95 (7/16, 2-3/16″ length)

What are the structural features?

3/8” axle, 1/2” rivet, double ball bearings, and a metal dust cap protecting the swivel raceways.

What is the weight capacity?

350 pounds per caster, regardless of brake type.

What wheel sizes are available?

3”, 3.5”, 4”, and 5”.

What tread widths are available?

1.25” or 1.5”, depending on wheel configuration.

What types of wheels are available?

What are the brake options?

  • TB: Top lock metal pedal, high-temp capable
  • PTB: Plastic pedal, easier to engage/disengage
  • TL: Total locking brake (wheel + bracket)

What are the benefits of its design?

Double ball raceways ensure smooth swivel motion and even load distribution; dust cap increases longevity; zinc finish resists corrosion.

Is it certified?

Yes, it’s NSF listed for sanitation compliance in institutional settings.

Why is it considered a new model?

It’s an updated version of Model 3 with improved stem options and performance features, despite legacy part numbers.

How does it compare to other casters?

Offers improved strength, versatility, and safety compared to other stem swivel casters due to its structural and material design.

Key Features Summary

  • Construction: Stamped steel, zinc-plated
  • Capacity: 350 lbs per caster
  • Stem Options: Square and grip ring
  • Brake Options: TB, PTB, TL
  • Wheel Sizes: 3”–5”
  • Tread Widths: 1.25”–1.5”
  • Mounting: 2-3/8” x 3-5/8”, slotted pattern
  • Structure: 3/8” axle, 1/2” rivet, dust cap
  • Certifications: NSF listed

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