Kingpinless Rubber on Cast Iron Swivel Top Plate Caster w/4" x 2" Black Wheel - 400 lbs Capacity/Caster - Service Caster Brand

Details

Manufacturer

Service Caster

Model

Series#KP30

SKU

SCC-KP30S420-RSR

Condition

new

Quantity

1

UPC

011586555822

Dimensions (L x W x H)

12 x 12 x 7.5 in

Shipping weight

8 lb

Posted

Sep 17, 2026, 7:00 PM CDT

Specifications

Bolt Size

3/8" (hardware not included)

Capacity

400

Color

Swivel - No Brake - Black

Durometer

80A

Heat Capacity

-40 degrees F to 180 degrees F

Item Weight Unit of Measure

pounds

Load Height

5-5/8"

Lower Temperature

-40

Lower Temperature UofM

F

Maximum Temperature

180

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

Swivel caster

Wheel Bearing

Roller Bearing

Wheel Diameter

4

Wheel Diameter UofM

inches

Wheel Material

Rubber on Cast Iron

Wheel Size

4" x 2"

Wheel Type

Rubber on Cast Iron

Description

Listing is for one (1) Service Caster Series #KP30 swivel caster with a 4" diameter by 2" wide rubber on cast iron wheel capable of supporting 400 lbs./caster. When searching for a reliable and durable solution to your caster needs, consider Service Caster Series KP30 moldon rubber on cast iron wheel casters. The Service Caster Series KP30 is ideal for material handling, carts, equipment, and shop projects. The moldon rubber tread performs especially well on hard surfaces such as concrete, tile, and wood, while the cast iron core wheel stands up to heavier loads with a stable and secure roll. 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 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, keeping you moving forward. • These Service Caster Series #KP30 Rubber on 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 400 lbs on the 4” caster, 400 lbs on the 5”, 450 lbs on the 6” and 500 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.