Kingpinless Thermo Rubber Flat Tread Swivel Top Plate Caster w/4" x 2" Gray Wheel & Side Lck Brake - 300 lbs Capacity/Caster - Service Caster Brand

Details

Manufacturer

Service Caster

Model

Series#KP30

SKU

SCC-KP30S420-TPRRF-SLB

Condition

new

Quantity

1

UPC

011586558403

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

300

Color

Swivel - Side Lock Brake - Gray

Durometer

75A

Heat Capacity

-20 degrees F to 180 degrees F

Item Weight Unit of Measure

pounds

Load Height

5-5/8"

Locking Type

Top Lock Brake

Lower Temperature

-20

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

Locking Castersor Wheels

Yes

Swivels

Yes

Size

4" Wheel

Top Plate Size

4" x 4-1/2"

Tread Width

2

Tread Width UofM

inches

Type

Swivel caster w/side lock brake

Wheel Bearing

Roller Bearing

Wheel Diameter

4

Wheel Diameter UofM

inches

Wheel Material

Thermoplastic Rubber Tread on Polyolefin Core

Wheel Size

4" x 2"

Wheel Type

Thermoplastic Rubber on Polyolefin

Description

Listing is for one (1) Service Caster Series #KP30 swivel caster with a 4" diameter by 2" wide thermoplastic rubber flat tread wheel and a side lock brake capable of supporting 300 lbs./caster. When searching for a reliable and durable solution to your caster needs, consider Service Caster’s Series KP30 thermoplastic rubber on polyolefin core flat tread casters. The soft flat tread is made of thermoplastic rubber that is non-marking and non-marring, and on the polyolefin core provides a long lasting, high capacity wheel that is capable of easy rolling under heavy loads. 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 Thermoplastic Rubber Flat Tread 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 300 lbs on the 4” caster, 350 lbs on the 5”, 500 lbs on the 6” and 600 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.