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All measurements indicate the wheel diameter by the tread width.

The below capacity ranges indicate the working (dynamic) load that each caster will support. A safety factor should be included in your formula to determine your required load rating per caster.

W/(C-1)=R W is total weight needed to move. C is total number of casters required. R is ideal load rating, with safety factor built in. Divide the total load weight by one less caster than you will use to safely determine load rating.

Plate dimensions shown are overall mounting plate size.
When replacing existing casters, select the closest plate size and verify bolt-hole compatibility.
BHP = Bolt Hole Pattern, shown under each plate.

BHP: 1-3/4″ × 2-7/8″, slotted to 3″
BHP: 1-3/4″ × 2-7/8″, slotted to 3″
BHP: 1-3/4″ × 2-15/16″ slotted to 2-3/8″ × 3-3/8″
BHP: 1-3/4″ × 2-15/16″ slotted to 2-3/8″ × 3-3/8″
BHP: 2-5/8” X 3-5/8” (Slotted to 3” x 3”)
BHP: 2-5/8” X 3-5/8” (Slotted to 3” x 3”)
BHP: 2-7/16" x 4-15/16" slotted to 3-3/8" x 5-1/4"
BHP: 2-7/16" x 4-15/16" slotted to 3-3/8" x 5-1/4"
(3″ Wide Casters), Industry-Standard
(3″ Wide Casters), Industry-Standard
BHP: 3-3/8" x 5-1/4" slotted to 4-1/8" x 6-1/8"
BHP: 3-3/8" x 5-1/4" slotted to 4-1/8" x 6-1/8"
BHP: 4-1/8" x 6" slotted to 4-1/2" x 6-1/8"
BHP: 4-1/8" x 6" slotted to 4-1/2" x 6-1/8"
View All • 21 Plate Sizes
View All • 21 Plate Sizes
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Caster Wheel Materials & Selection Guide

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Polyurethane Casters

Custom made to order. All sales final.

Each Hamilton product is custom manufactured for your order (lead time is shown on each product page). Please confirm all specs before checkout, since made-to-order items aren't eligible for returns, exchanges or refunds. Need help? Call 844-439-4335 or email info@casterhq.com and we'll verify fit for you.

Diameter: 12 to 18 inTread: 5-1/2 to 9 inCapacity: 5,800 to 15,000 lb per casterPlate sizes: 8-1/2 x 8-1/2
This page lists ten polyurethane casters with 12 to 18 in wheels, rated 5,800 to 15,000 lb each, made by Hamilton. All mount on a 8-1/2 x 8-1/2 in plate, with swivel and rigid versions, with no brake options. Examples include a Hamilton S-ZFMD-1355POYB-ULTRA 13.5 x 5.5 in poly swivel caster rated 6,300 lb and a Hamilton ZFMD-1890POYB-ULTRA 18 x 9 in poly swivel kingpinless caster rated 15,000 lb.

Shop by type

5 types

Wheel = wheel diameter · capacity is per caster.

15000 lbs
TieredPricing
Hamilton Spinfinity Maxi-Duty Swivel Caster with 18" x 9" Natural Polyurethane (93A Ester) Presson Wheel with 2" Sealed Precision Ball Bearings MSRP Hamilton
Made to Order · 4-6 Wk
Hamilton ZFMD-1890POYB-ULTRA 18" x 9" Poly Swivel Kingpinless Caster – 15000 lb
Part # S-ZFMD-1890POYB-ULTRA
from $8,095.00
Volume pricing available
PolyurethanePlate
Load rating
15000 lbs
Size18" x 9"
Capacity15000 lbs
WheelPolyurethane
MountPlate 8-1/2" x 8-1/2"
TypeSwivel
More Details Less Details
Width 9"
Height 21-3/4"
Temp Range -70°F to 175°F
Rig Type Swivel
Brake No Brake
Frame Platinum Powder
Hamilton Spinfinity Maxi-Duty Swivel Caster with 18" x 9" Natural Polyurethane (93A Ester) Presson...
Shop Product
9800 lbs
TieredPricing
Hamilton Spinfinity Maxi-Duty Swivel Caster with 16" x 7" Natural Polyurethane (93A Ester) Presson Wheel with 1 1/2" Sealed Precision Ball Bearings Hamilton
Made to Order · 4-6 Wk
Hamilton ZFMD-1670POYB-ULTRA 16" x 7" Polyurethane Swivel Kingpinless Caster
Part # S-ZFMD-1670POYB-ULTRA
from $4,780.00
Volume pricing available
PolyurethanePlate
Load rating
9800 lbs
Size16" x 7"
Capacity9800 lbs
WheelPolyurethane
MountPlate 8-1/2" x 8-1/2"
TypeSwivel
More Details Less Details
Width 7"
Height 19-3/4"
Temp Range -70°F to 175°F
Rig Type Swivel
Brake No Brake
Frame Platinum Powder
Hamilton Spinfinity Maxi-Duty Swivel Caster with 16" x 7" Natural Polyurethane (93A Ester) Presson...
Shop Product
11800 lbs
TieredPricing
Hamilton Spinfinity Maxi-Duty Swivel Caster with 15" x 9" Natural Polyurethane (93A Ester) Presson Wheel with 1 1/2" Sealed Precision Ball Bearings Hamilton
Made to Order · 4-6 Wk
Hamilton ZFMD-1590POYB-ULTRA 15" x 9" Poly Kingpinless Swivel Caster
Part # S-ZFMD-1590POYB-ULTRA
from $4,500.00
Volume pricing available
PolyurethanePlate
Load rating
11800 lbs
Size15" x 9"
Capacity11800 lbs
WheelPolyurethane
MountPlate 8-1/2" x 8-1/2"
TypeSwivel
More Details Less Details
Width 9"
Height 18-7/8"
Temp Range -70°F to 175°F
Rig Type Swivel
Brake No Brake
Frame Platinum Powder
Hamilton Spinfinity Maxi-Duty Swivel Caster with 15" x 9" Natural Polyurethane (93A Ester) Presson...
Shop Product
6300 lbs
TieredPricing
Hamilton Spinfinity Maxi-Duty Swivel Caster with 13.5" x 5.5" Natural Polyurethane (93A Ester) Presson Wheel with 1 1/2" Sealed Precision Ball Bearings Hamilton
Made to Order · 4-6 Wk
Hamilton S-ZFMD-1355POYB-ULTRA 13.5" x 5.5" Poly Swivel Caster – 6300 lb
Part # S-ZFMD-1355POYB-ULTRA
from $3,782.00
Volume pricing available
PolyurethanePlate
Load rating
6300 lbs
Size13" x 5-1/2"
Capacity6300 lbs
WheelPolyurethane
MountPlate 8-1/2" x 8-1/2"
TypeSwivel
More Details Less Details
Width 5-1/2"
Height 17-1/8"
Temp Range -70°F to 175°F
Rig Type Swivel
Brake No Brake
Frame Platinum Powder
Hamilton Spinfinity Maxi-Duty Swivel Caster with 13.5" x 5.5" Natural Polyurethane (93A Ester) Presson...
Shop Product
5800 lbs
TieredPricing
Hamilton Spinfinity Maxi-Duty Swivel Caster with 12" x 5.5" Natural Polyurethane (93A Ester) Presson Wheel with 1 1/4" Sealed Precision Ball Bearings Hamilton
Made to Order · 4-6 Wk
Hamilton S-ZFMD-1255POYB-ULTRA 12" x 5.5" Poly Swivel Caster – 5800 lb
Part # S-ZFMD-1255POYB-ULTRA
from $3,415.00
Volume pricing available
PolyurethanePlate
Load rating
5800 lbs
Size12" x 5-1/2"
Capacity5800 lbs
WheelPolyurethane
MountPlate 8-1/2" x 8-1/2"
TypeSwivel
More Details Less Details
Width 5-1/2"
Height 15-1/2"
Temp Range -70°F to 175°F
Rig Type Swivel
Brake No Brake
Frame Platinum Powder
Hamilton Spinfinity Maxi-Duty Swivel Caster with 12" x 5.5" Natural Polyurethane (93A Ester) Presson...
Shop Product
15000 lbs
TieredPricing
Hamilton Spinfinity Maxi-Duty Rigid Caster with 18" x 9" Natural Polyurethane (93A Ester) Presson Wheel with 2" Sealed Precision Ball Bearings MSRP Hamilton
Made to Order · 4-6 Wk
Hamilton 18" x 9" Polyurethane Rigid Kingpinless Caster – 15000 lb
Part # R-ZFMD-1890POYB-ULTRA
$7,201.00
Volume pricing available
PolyurethanePlate
Load rating
15000 lbs
Size18" x 9"
Capacity15000 lbs
WheelPolyurethane
MountPlate 8-1/2" x 8-1/2"
TypeRigid
More Details Less Details
Width 9"
Height 21-3/4"
Temp Range -70°F to 175°F
Rig Type Rigid
Brake No Brake
Frame Platinum Powder
Hamilton Spinfinity Maxi-Duty Rigid Caster with 18" x 9" Natural Polyurethane (93A Ester) Presson...
Shop Product
9800 lbs
TieredPricing
Hamilton Spinfinity Maxi-Duty Rigid Caster with 16" x 7" Natural Polyurethane (93A Ester) Presson Wheel with 1 1/2" Sealed Precision Ball Bearings Hamilton
Made to Order · 4-6 Wk
Hamilton ZFMD-1670POYB-ULTRA 16" x 7" Polyurethane Rigid Caster
Part # R-ZFMD-1670POYB-ULTRA
$5,027.00
Volume pricing available
PolyurethanePlate
Load rating
9800 lbs
Size16" x 7"
Capacity9800 lbs
WheelPolyurethane
MountPlate 8-1/2" x 8-1/2"
TypeRigid
More Details Less Details
Width 7"
Height 19-3/4"
Temp Range -70°F to 175°F
Rig Type Rigid
Brake No Brake
Frame Platinum Powder
Hamilton Spinfinity Maxi-Duty Rigid Caster with 16" x 7" Natural Polyurethane (93A Ester) Presson...
Shop Product
11800 lbs
TieredPricing
Hamilton Spinfinity Maxi-Duty Rigid Caster with 15" x 9" Natural Polyurethane (93A Ester) Presson Wheel with 1 1/2" Sealed Precision Ball Bearings Hamilton
Made to Order · 4-6 Wk
Hamilton ZFMD-1590POYB-ULTRA 15" x 9" Polyurethane Rigid Caster – 11800 lb
Part # R-ZFMD-1590POYB-ULTRA
$4,488.00
Volume pricing available
PolyurethanePlate
Load rating
11800 lbs
Size15" x 9"
Capacity11800 lbs
WheelPolyurethane
MountPlate 8-1/2" x 8-1/2"
TypeRigid
More Details Less Details
Width 9"
Height 18-7/8"
Temp Range -70°F to 175°F
Rig Type Rigid
Brake No Brake
Frame Platinum Powder
Hamilton Spinfinity Maxi-Duty Rigid Caster with 15" x 9" Natural Polyurethane (93A Ester) Presson...
Shop Product
6300 lbs
TieredPricing
Hamilton Spinfinity Maxi-Duty Rigid Caster with 13.5" x 5.5" Natural Polyurethane (93A Ester) Presson Wheel with 1 1/2" Sealed Precision Ball Bearings Hamilton
Made to Order · 4-6 Wk
Hamilton R-ZFMD-1355POYB-ULTRA 13.5" x 5.5" Polyurethane Rigid Caster – 6300 lb
Part # R-ZFMD-1355POYB-ULTRA
$3,920.00
Volume pricing available
PolyurethanePlate
Load rating
6300 lbs
Size13" x 5-1/2"
Capacity6300 lbs
WheelPolyurethane
MountPlate 8-1/2" x 8-1/2"
TypeRigid
More Details Less Details
Width 5-1/2"
Height 17-1/8"
Temp Range -70°F to 175°F
Rig Type Rigid
Brake No Brake
Frame Platinum Powder
Hamilton Spinfinity Maxi-Duty Rigid Caster with 13.5" x 5.5" Natural Polyurethane (93A Ester) Presson...
Shop Product
5800 lbs
TieredPricing
Hamilton Spinfinity Maxi-Duty Rigid Caster with 12" x 5.5" Natural Polyurethane (93A Ester) Presson Wheel with 1 1/4" Sealed Precision Ball Bearings Hamilton
Made to Order · 4-6 Wk
Hamilton R-ZFMD-1255POYB-ULTRA 12" x 5.5" Poly Rigid Caster – 5800 lb
Part # R-ZFMD-1255POYB-ULTRA
$3,294.00
Volume pricing available
PolyurethanePlate
Load rating
5800 lbs
Size12" x 5-1/2"
Capacity5800 lbs
WheelPolyurethane
MountPlate 8-1/2" x 8-1/2"
TypeRigid
More Details Less Details
Width 5-1/2"
Height 15-5/8"
Temp Range -70°F to 175°F
Rig Type Rigid
Brake No Brake
Frame Platinum Powder
Hamilton Spinfinity Maxi-Duty Rigid Caster with 12" x 5.5" Natural Polyurethane (93A Ester) Presson...
Shop Product

Spinfinity Kinpinless Caster Series with TerraTech Ultra Wheels

The new TerraTech Ultra Press-On Wheels are Hamilton's answer to applications running up to 10 mph continuously (24/7) and carrying heavy loads up to 13,000 lbs. Two primary design features provide the continuous duty rating: 1) the face or running surface of the TerraTech Ultra tire is CNC-machined with only 0.015" total run-out providing our smoothest riding press-on and prolonged wheel work-life and 2) the TerraTech Ultra compound is formulated similar to our DuraGlide Wheels and represents our coolest running press-on wheel. The TerraTech Ultra is also your best choice of a polyurethane press-on wheel for outdoor applications.

To support the high speeds and provide greater rollability, engineers equipped the new TerraTech wheels with massive double-stacked maintenance-free precision ball bearings. Also, the extra-thick, extra-wide solid tires feature a bond to the rim that is guaranteed to never fail. The replaceable tire & steel rim are "pressed on" to a heavy duty 1045 steel core cnc-machined to tight tolerances.

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