Heavy Duty Kingpinless Swivel Caster Set of 4 with 4 Inch Semi Steel Cast Iron Wheels and Ball Bearings - Includes 4 Swivel - 4,000 lbs. Total Capacity - Service Caster Brand

Details

Manufacturer

Service Caster

Model

Series#KP30

SKU

SCC-KP30S420-SSB-4

Condition

new

Quantity

4

UPC

734005540468

Dimensions (L x W x H)

12 x 12 x 7.5 in

Shipping weight

29 lb

Posted

Sep 17, 2026, 7:00 PM CDT

Specifications

Bolt Size

3/8" (hardware not included)

Capacity

2800

Color

4 Swivel - No Brake - Silver

Heat Capacity

-45 degrees F to 600 degrees F

Item Weight Unit of Measure

pounds

Load Height

5-5/8"

Lower Temperature

-45

Lower Temperature UofM

F

Maximum Temperature

600

Maximum Temperature UofM

F

Mounting Height

5-5/8"

Mounting Type

Top Plate

Plating/Coating

Bright Zinc Plated Finish

Casters Mounting Method

Plate

Swivels

Yes

Size

4" Wheel

Top Plate Size

4" x 4-1/2"

Tread Width

2

Tread Width UofM

inches

Type

(4) Swivel casters

Wheel Bearing

Ball Bearing

Wheel Diameter

4

Wheel Diameter UofM

inches

Wheel Material

Semi Steel Cast Iron

Wheel Size

4" x 2"

Wheel Type

Semi Steel Cast Iron

Description

Listing is for a set of four (4) Service Caster Series #KP30 swivel caster with a 4" diameter by 2" wide silver semi steel cast iron wheels and maintenance free precision ball wheel bearings capable of supporting a total weight of 4,000 lbs. (1,000 lbs./caster). When searching for a reliable and durable solution to your caster needs, consider Service Caster’s Series KP30 semi-steel cast iron casters. Semi-steel cast iron provides a long lasting, high capacity wheel capable of easy rolling under heavy loads. These cast iron based wheels feature a machined hub and wheel face. An economic choice over steel, semi-steel wheels are abrasion resistant and rugged while also having the capability to perform in temperatures up to 600 degrees Fahrenheit. Featuring a Kingpinless hot forged ASTM1045 steel design that increases caster durability and integrity, the series KP30 eliminates problems associated with kingpin failure due to severe shock loading. In addition, the Kingpinless design features 3/8” diameter HRC45 steel ball bearings which absorb thrust and load in severe environments. Lastly, Service Caster’s Series KP30 casters are finely crafted with zinc plating, grease fittings, and 4 position notches to accept 4-position locks. These highly versatile casters are ideal for a wide range of applications, such as dollies, platform trucks, warehouse carts and freight terminals. Even drywall carts, welding carts, and wall panel carts will be ready to roll on the Series KP30. • These Service Caster Series #KP30 Semi Steel Cast Iron casters offer various wheel sizes and mounting heights: 4” Wheel: 5-5/8” mounting height; 5” wheel: 6-1/2” mounting height; 6” wheel: 7-1/2” mounting height; 8" wheel: 9-1/2" mounting height. • Weight capacity ranges from 700 lbs on the 4” caster, 1000 lbs on the 5”, 1200 lbs on the 6” and 1250 lbs. on the 8”. • Top plate measures at 4" x 4-1/2" with a bolt hole pattern of 2-5/8" x 3-5/8" to 3" x 3" and can either be bolted or welded on. • Brake options include a side lock brake (SLB) which applies a positive locking force against the wheel hub which prevents the wheel from moving freely, or a bolt-on swivel lock (BSL) that when inserted into one of 4 notches found on the swivel raceway converts a swivel caster to rigid for straight-line tracking at any 90 degree angle. Combining both brake types ensures complete immobility over both swivel and wheel on the caster.