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4″ Polyolefin – Stainless Steel Stem Caster Total Lock Brake 3A

$64.84

PN: SS-3APB4X-ML
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 +$1.00TS21 | TS21 - Threaded Stem 1/2" - 13 x 1" LongTS22 | TS22 - Threaded Stem 1/2"- 13 x 1-1/2" LongTS23 | TS23 - 1/2"-13x2" Threaded Stem +$1.00TS61 | TS61 - Threaded Stem 3/8"-16 x 1" LongTS62 | TS62 - Threaded Stem 3/8"-16 x 1-1/2" LongTS26N | TS26N - Threaded Stem 1/2"-13 x 2-3/4" Long +$1.00TS5/8 | TS5/8 - Threaded Stem 5/8"-11 x 1-3/4" Long +$7.00TS3/4 | TS3/4 - Threaded Stem 3/4"-10 x 1-3/4" Long +$7.00TSC1 | TSC1 - Threaded Stem 1/2"-13 x 4" Long +$20.00TSC2 | TSC2 - Threaded Stem 5/8"-11 x 4" Long +$20.00TSC3 | TSC3 - Threaded Stem 3/4"-10 x 6" Long +$20.00RD3/4 | RD3/4 - 3/4"x 2" Round Metal Stem w/ 3 cross drilled holes +$8.00GR82 | GR82 – Dual Grip Ring Stem 1-1/8″ Diameter x 2-3/16″ Long +$10.00GR91 | GR91 - Grip Ring Stem 7/16" Diameter x 1-3/8" Long +$10.00GR95 | GR95 - Grip Ring Stem .846" x 2-3/16" (For 7/8" Inner Diameter "Metro" Shelving) +$10.00SQ7/8-GR | SQ7/8-GR - 7/8" Plain Square Grip Ring (To Drill Your Own Cross-Holes) +$10.00SQ3/4 | SQ3/4 - 3/4" Square-3 Cross Holes +$10.00SQ7/8 - 7/8" Square-3 Cross Holes +$10.00ER9 | ER9 - Expanding Rubber for 3/4" Inner Diameter +$10.00ER27 | ER27 - Expanding Rubber for 7/8" Inner Diameter +$10.00ER28 | ER28 - Expanding Rubber for 1" Inner Diameter +$10.00ER29 | ER29 - Expanding Rubber for 1-1/8" Inner Diameter +$10.00ER17 | ER17 - Expanding Rubber for 1-1/4" Inner Diameter +$10.00ER25 | ER25 - Expanding Rubber for 1-3/8" Inner Diameter +$10.00ER26 | ER26 - Expanding Rubber for 1-1/2" Inner Diameter +$10.00ER21 | ER21 - Expanding Rubber for 1-13/16" Inner Diameter +$10.00
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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
60D ± 5
Durometer
60D ± 5
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"
4 3/8
Swivel Radius
4 3/8
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
LA
Lube Axle Code
LA
Weight
Weight
2.5 lbs

Description

4″ Polyolefin Wheel. Brake Locks both the Swivel and Wheel Shown in photo with 5″ wheels. This 3A stem swivel caster is our stainless steel total locking light duty industrial caster which uses the same 1-¼” wide wheels as our standard Model 3. A total lock brake locks both the wheel and the swivel on a swivel caster. It latches them simultaneously by one foot on the brake pedal. The plate caster swivel model 3A has a metal total lock pedal.  It is simple to turn on but not as simple to let go as the nylon brake pedal featured on K3. The metal lock can only be reached if the release deise with the type of your shoe which may not allow enough burden to be utilized to unlock the brake.  This is not an issue with the nylon brake pedal on model k3. The metal total lock brake pedal is an alternative on 3a swivels. The metal pedal is shown slightly under the mounting plate of the swivel caster and slightly over the wheel.  The metal pedal extends behind the wheel so the toe of your foot can simply reach the activation pedal. The metal pedal burrows into polyurethane and rubber tires more than the nylon pedal. The amount of the metal pedal total lock brake is more than the cost of a total lock brake with a nylon pedal. Neither type of total lock brake are possible on a caster rigid.

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

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

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