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Total Locking Casters – StemCaster Model K3A

Caster City ships all casters from Texas, Ohio, or Washington.

Capacity up to 300 pounds per caster. These institutional casters are ideal for any light duty application where the caster must be totally immobile when the caster brake is applied. Caster Model K3A has a unique brake which locks both the wheel and the swivel bearing at the same time. This “Total-Lock” brake insures that the swivel caster will not turn when the wheel is locked. This combination wheel brake and swivel lock is essential for safety in some applications – such as on worktables, tablesaws, and medical equipment. The Total-Lock brake is desireable whenever a brake is needed because it makes a swivel caster totally immobile.

Stem # ID of Tubing Rubber Range ( smallest size to largest size )
ER9 3/4″ .720″ to .851″
ER27 7/8″ .852″ to .927″ fits 1″ O.D. 16 or 18 Gauge
ER28 1″ .928″ to 1.029″
ER7A 1 1/16″ 1.020″ to 1.100
ER29 1 1/8″ 1.100″ to 1.180″
ER17 1 1/4″ 1.178″ to 1.303″
ER25 1 3/8″ 1.360″ to 1.425″
ER26 1 1/2″ 1.426″ to 1.589″ fits 1 5/8″ O.D. 16 or 18 Gauge
ER21 1 13/16″ 1.790″ to 1.850″
Stem # Threaded Stem Size Threaded Stem Length
TS21 1/2″ – 13″ 1″
TS22 1/2″ – 13″ 1 1/2″
TS26N 1/2″ – 13″ 2 3/4″
TS61 3/8″ – 16″ 1″
TSC1 1/2″ – 13″ 4″
TS5/8 5/8″ – 11″ 1 3/4″
TSC2 5/8″ – 11″ 4″
TS3/4 3/4″ – 10″ 1 3/4″
TSC3 3/4″ – 10″ 6″
HK1/2 1/2″ HOLLOW KINGPIN 1/2″ SLIP FIT / HOLE FOR YOUR BOLT

Total Locking Stem Caster Model K3A Chart
(Click the Part Number to Order)

We do NOT include mounting Hardware.

Desktop: When you put your mouse over the words in the wheel description column you see a picture of the wheel. Click on the part number in the Swivel and Rigid columns to see the complete caster.

Mobile: Hold down your finger on the chart and scroll to the right to click on the part number you would like to order.

Filter through the Available Diameters to find the size you need.

CASTER WHEEL DIAM. TREAD WIDTH WHEEL TREAD MATERIAL Click below for Replacement Wheels
 STD BRG TYPE MAX CAP. EACH CASTER LBS. Swivel Casters with Total-Lock Brake Part Number Swivel Casters Threaded Stem Only ( without Brake ) Part Number APPROX SWIVEL WEIGHT(LBS) OVERALL HEIGHT
3″ 1 1/4″ Gray Rubber Caster Wheels
PS 150 K3ARF3X-ML K3ARF3X 1 3/4 4″
3″ 1 1/4″ Super Soft Gray Soft Rubber
B 150 K3ARS3X-ML K3ARS3X 1 3/4 4″
3″ 1 1/4″ High Capacity Rubber
B 200 K3ARH3X-ML K3ARH3X 1 3/4 4″
3″ 1 1/4″ Maroon/Gray Premium Polyurethane
B 250 K3APM3X-ML K3APM3X 1 3/4 4″
3″ 1 1/4″ Black/Gray Polyurethane
PS 200 K3ABK3X-ML K3ABK3X 1 3/4 4″
3″ 1 1/4″ Blue/Gray Polyurethane
PS 200 K3ABP3X-ML K3ABP3X 1 3/4 4″
3″ 1 1/4″ Gray Polyurethane
PS 200 K3AGP3X-ML K3AGP3X 1 3/4 4″
3″ 1 1/4″ Red/Gray Polyurethane
PS 200 K3ARG3X-ML K3ARG3X 1 3/4 4″
3″ 1 1/4″ Blue Polyurethane on Aluminum
B 250 K3APA3X-ML K3APA3X 1 3/4 4″
3″ 1 1/4″ Polyolefin – Black
P 250 K3APB3X-ML K3APB3X 1 3/4 4″
3″ 1 1/4″ Polyolefin – Black Donut
B 250 K3APB3BX-ML K3APB3BX 1 3/4 4″
3″ 1 1/4″ Nylon ( White )
B 250 K3ANY3BX-ML K3ANY3BX 1 3/4 4″
CASTER WHEEL DIAM. TREAD WIDTH WHEEL TREAD MATERIAL Click below for Replacement Wheels
 STD BRG TYPE MAX CAP. EACH CASTER LBS. Swivel Casters with Total-Lock Brake Part Number Swivel Casters Threaded Stem Only ( without Brake ) Part Number APPROX SWIVEL WEIGHT(LBS) OVERALL HEIGHT
4″ 1 3/8″ Extra Soft Rubber
RB 250 K3ARC4X-ML K3ARC4XL 2 5″
4″ 1 1/4″ Gray Rubber
PS 200 K3ARF4X-ML K3ARF4X 2 5″
4″ 1 1/4″ Super Soft Gray Soft Rubber
B 120 K3ARS4X-ML K3ARS4X 2 5″
4″ 1 1/4″ High Capacity Rubber
B 250 K3ARH4X-ML K3ARH4X 2 5″
4″ 1 1/4″ Maroon/Gray Premium Polyurethane
B 300 K3APM4X-ML K3APM4X 2 5″
4″ 1 1/4″ Gray Polyurethane
PS 250 K3AGP4X-ML K3AGP4X 2 5″
4″ 1 1/4″ Black/Gray Polyurethane
PS 250 K3ABK4X-ML K3ABK4X 2 5″
4″ 1 1/4″ Blue/Gray Polyurethane
PS 250 K3ABP4X-ML K3ABP4X 2 5″
4″ 1 1/4″ Red/Gray Polyurethane
PS 250 K3ARG4X-ML K3ARG4X 2 5″
4″ 1 1/4″ Blue Polyurethane on Aluminum
B 250 K3APA4X-ML K3APA4X 2 5″
4″ 1 1/4″ Gray Rubber on Aluminum B 300 K3ARA4X-ML K3ARA4X 2 5″
4″ 1 1/4″ Polyolefin – Black
P 300 K3APB4X-ML K3APB4X 2 5″
4″ 1 1/4″ Polyolefin – Black Donut
B 300 K3APB4BX-ML K3APB4BX 2 5″
4″ 1 1/4″ Nylon ( White )
B 300 K3ANY4BX-ML K3ANY4BX 2 5″
CASTER WHEEL DIAM. TREAD WIDTH WHEEL TREAD MATERIAL Click below for Replacement Wheels
 STD BRG TYPE MAX CAP. EACH CASTER LBS. Swivel Casters with Total-Lock Brake Part Number Swivel Casters Threaded Stem Only ( without Brake ) Part Number APPROX SWIVEL WEIGHT(LBS) OVERALL HEIGHT
5″ 1 1/4″ Gray Soft Rubber
PS 250 K3ARF5X-ML K3ARF5XE 2 1/2 6 1/8″
5″ 1 1/4″ Super Soft Gray Soft Rubber
B 125 K3ARS5X-ML K3ARS5XE 2 1/2 6 1/8″
5″ 1 1/4″ High Capacity Rubber
B 250 K3APM5X-ML K3APM5X 2 1/2 6 1/8″
5″ 1 1/4″ Maroon/Gray Premium Polyurethane
B 300 K3APM5X-ML K3APM5X 2 1/2 6 1/8″
5″ 1 1/4″ Gray Polyurethane
PS 250 K3AGP5X-ML K3AGP5X 2 1/2 6 1/8″
5″ 1 1/4″ Black/Gray Polyurethane
PS 250 K3ABK5X-ML K3ABK5X 2 1/2 6 1/8″
5″ 1 1/4″ Blue/Gray Polyurethane
PS 250 K3ABP5X-ML K3ABP5X 2 1/2 6 1/8″
5″ 1 1/4″ Red/Gray Polyurethane
PS 250 K3ARG5X-ML K3ARG5X 2 1/2 6 1/8″
5″ 1 1/4″ Blue Polyurethane on Aluminum
B 250 K3APA5X-ML K3APA5X 2 1/2 6 1/8″
5″ 1 1/4″ Gray Rubber on Aluminum B 300 K3ARA5X-ML K3ARA5X 2 1/2 6 1/8″
5″ 1 1/4″ Polyolefin – Black
P 300 K3APB5X-ML K3APB5X 2 1/2 6 1/8″
5″ 1 1/4″ Polyolefin – Black Donut
B 300 K3APB5BX-ML K3APB5BX 2 1/2 6 1/8″
5″ 1 1/4″ Nylon ( White )
B 300 K3ANY5BX-ML K3ANY5BX 2 1/2 6 1/8″
CASTER WHEEL DIAM. TREAD WIDTH WHEEL TREAD MATERIAL Click below for Replacement Wheels
 STD BRG TYPE MAX CAP. EACH CASTER LBS. Swivel Casters with Total-Lock Brake Part Number Swivel Casters Threaded Stem Only ( without Brake ) Part Number APPROX SWIVEL WEIGHT(LBS) OVERALL HEIGHT
6″ 1 1/4″ Gray Rubber
PS 300 K3ARFR6X-ML K3ARFR6X 3 7″

Types of Wheels for the Total Locking StemCaster Model K3A:

Total Locking Stem Caster Model K3A Features:

img Up to 300lbs per each caster
img The caster brackets are made of stamped 304 stainless steel.
img Swivels bearings are standard with a seal and grease fitting.
img Gray Soft Rubber and Polyurethane wheels have a sealed precision ball bearing.
img Swivel Radius for Casters with the Total-Lock Brake – ALL SIZES – 4 3/8″

Use the Polyolefin ( Industrial Plastic ) wheel for “Standing Loads”. Polyolefin wheels eliminate the possiblilty of a flat spot developing on the surfiace of polyurethane and rubber tires when the weight exceeds 2/3 of the rated capacity when the object is left parked most of the time.

Threaded Stem Casters should NOT be used as a “Leveling Device”! Capacity ratings are based on the weight being directly on the top of the swivel bearing, not somewhere above it on the threaded stem.

Swivel Radius for Casters with the Total-Lock Brake – ALL SIZES – 4 3/8″

Combination Wheel Brake and Swivel Lock

This brake simultaneously locks the wheel and the swivel. One step on the activating pedal instantly locks the entire caster holding the equipment firmly in place. One step on the release pedal frees the swivel and wheel.

T-Nuts for Threaded Stems

T-Nuts can be used to secure our threaded stem casters to wooden items. Here we show the typical use of the T-Nut for both a Horizontal and a Vertical Application.

In the Horizontal Application, you would drill a hole equal to the diameter of the barrel of the T-Nut and completely thru your wood. Hammer the T-Nut into the hole and thread your caster in from the bottom. This is the strongest mounting.

The Vertical Application is for attaching casters to the bottom of legs and into the end grain of the wood. This is not an exceptionally strong way to mount! Drill your hole equal to the diameter of the barrel of the T-Nut and to the depth of the length of the stem of the caster plus about 1/4″. Apply 2 part epoxy to the T-Nut for additional strength. Hammer the T-Nut into the hole and thread your caster in from the bottom. You must use epoxy as we have had problems with some woods where the nuts ( and the casters ) fall off.

Typical Application Use for the Total Locking Stem Caster Model K3A Series:

img Workbenches
img Shop Equipment
img Kitchen Islands
img Movie Soundstage Equipment
img Hospital / Medical Equipment
img Computer Equipment Stands and Mobile Workstations
img Electronics Diagnostic Equipment and Carts
img Any Application requiring the item to be held firmly in place

Need Help with your order?
(800) 501-3808

You should never select on the basis of load capacity alone. There is no industry standard for load capacity ratings and they may not include a factor for abuse. Our capacity ratings are below what the casters are capable of carrying because most applications have less than perfect conditions. Please refer to the information shown at the bottom of this page. If you have any doubt as to which wheel or caster is the BEST choice for your application contact us for a recommendation.