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Maxi-Duty Casters

Capacity Range: 3,000 - 23,000 lbs.

 
#S-MD-84FST Swivel w/ Forged Steel Wheel
Maxi-Duty Rigid models feature reinforced 3/8” x 5” plate steel legs, continuously welded inside and outside to 1/2" thick mounting plates.
The enhanced Maxi-Duty Series now features Hamilton’s Precision Integrated HPI™ Swivel Technology. This new technology outperforms conventional CNC-machined ball raceways, kingpinless, and unit load bearing swivel constructions.
The new design improves the bearing’s element of contact and more than doubles the number of contact points. The new HPI™ raceways are also 45% harder than conventional hardened raceways and the surface finish is an incredibly smooth 16 micro inches.
 
 
Move over 10 tons on Hamilton’s top-of-the-line Maxi-Duty Casters, designed and built for the toughest applications including shipbuilding, manufactured housing, automotive and aerospace. Long life and dependable service are assured now more than ever with Hamilton's new HPI™ Swivel Technology. The new technology is a significant upgrade from conventional ball raceways or unit load bearings and provides an even stronger platform to support Hamilton’s three year product warranty. All forged steel wheels are machined with a slight crown to enhance rollability and swiveling.

OPTIONAL ACCESSORIES

  • Swivel Lock
- 4 Position (-4SL) - convert swivel to rigid for straight line steering, robotically welded housing & CNC-milled slots assure long lasting, trouble-free performance.
  • Sealed Swivel Assembly
(-SS) - prolongs caster life in harsh environments.
  • Wheel Bearing Seals
(-DS) - prolong wheel life in harsh environments.
  • V-Grooved Wheel Models
  • Custom Engineering
- Hamilton engineers will custom design any caster to meet customer requirements.

 
 

QUALITY FEATURES

  • Swivel Construction
- 5/8" thick drop forged steel mounting plate (rigid plate 1/2" thick); 3/8" x 5" plate steel contoured legs are welded inside and outside to forged steel horn base.
  • Kingpin
- 1 1/4" diameter integrally forged with mounting plate guaranteed for life, prevents bending or breaking; threaded for 1 1/4" slotted nut secured by roll pin for positive locking.
  • Main Load Bearing
- HPI™ thrust bearing with outside diameter of 7 1/2"; raceways hardened to 58-62HRC and ground to surface finish 16 micro inches.
  • Secondary Load Bearing
- 1 1/4" precision tapered thrust bearing counteracts radial thrust.
  • Axle
- 1 1/4" diameter grade 5 hex head with slotted nut and cotter pin.
  • Lubrication Fittings
- Ball-check type in swivel assembly and in wheel hubs with tapered or straight roller bearings.
 

THREE YEAR WARRANTY

The Maxi-Duty Series (MD) is backed by Hamilton’s Three Year Product Warranty. Refer to selection table for qualifying wheels.
 

FEATURED WHEEL BEARINGS

Best for most severe heavy duty and power-towed applications. Tapered Roller Bearings
Double sealed, maintenance free, superior rollability aids manual applications, not recommended if shock loading is prevalent. Precision Ball Bearings

WHEEL CHOICES

Maxi-Duty Caster Selection Table

 
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= available for 24 Hour PRONTO® shipment More Information

At Hamilton we understand that fast delivery is critical. This PRONTO® Symbol identifies one of thousands of PRONTO® models we stock for you in our warehouse (so you don't have to) and pledge to ship either SAME-DAY, if arrived before noon EST, or otherwise next day service - all for no extra charge.

3YR =Three Year Warranty applies
Dimensions in inches
WheelSwivel CasterRigid Caster

Dia.FaceMore Information

 
Hover over the Wheel Type to see more information.

Type
More Information

 
Click on the Model Number to view details about the Caster.

Model Number
MSRPWt.
Lbs.
More Information

 
Click on the Model Number to view details about the Caster.

Model Number
MSRPWt.
Lbs.
Load
Cap.
Lbs.
Overall
Height
B
63Forged Steel

Highest capacity drop forged steel tensile strength in the 75,000 psi range.

S-MD-63FST 3YR $49861R-MD-63FST 3YR $305441200010
Nylast®

Solid high capacity cast nylon resistant to moisture & many chemicals.

S-MD-63NYB 3YR $49348R-MD-63NYB$301275400
83Forged Steel

Highest capacity drop forged steel tensile strength in the 75,000 psi range.

S-MD-83FST 3YR $50070R-MD-83FST 3YR $307551400011
Nylast®

Solid high capacity cast nylon resistant to moisture & many chemicals.

S-MD-83NYB$55648R-MD-83NYB$363287200
Super Ultralast®

New Ultimate Urethane 1" thick on forged steel center.

S-MD-83STRT 3YR $71765R-MD-83STRT 3YR $524484200
Superlast XC®

1" thick harder (70D) poly on forged steel for 30% more capacity than Superlast®.

S-MD-83SYT70 3YR $58364R-MD-83SYT70 3YR $390484500
Superlast®

1" thick 95A polyurethane tread chemically bonded to forged steel center.

S-MD-83SYT 3YR $53964R-MD-83SYT 3YR $347473500
4Forged Steel

Highest capacity drop forged steel tensile strength in the 75,000 psi range.

S-MD-84FST 3YR $56876R-MD-84FST 3YR $3715917000
103Forged Steel

Highest capacity drop forged steel tensile strength in the 75,000 psi range.

S-MD-103FST 3YR $52371R-MD-103FST 3YR $34455650013
Nylast®

Solid high capacity cast nylon resistant to moisture & many chemicals.

S-MD-103NYB$62155R-MD-103NYB$441428200
4Forged Steel

Highest capacity drop forged steel tensile strength in the 75,000 psi range.

S-MD-104FST 3YR $58390R-MD-104FST 3YR $4047418000
Super Ultralast®

New Ultimate Urethane 1" thick on forged steel center.

S-MD-104STRT 3YR $91387R-MD-104STRT 3YR $734686000
Superlast XC®

1" thick harder (70D) poly on forged steel for 30% more capacity than Superlast®.

S-MD-104SYT70 3YR $70787R-MD-104SYT70 3YR $528686500
Superlast®

1" thick 95A polyurethane tread chemically bonded to forged steel center.

S-MD-104SYT 3YR $65285R-MD-104SYT 3YR $472685000
5Duralast XC®

A harder (70D) liquid cast polyurethane with load capacity 30% higher than Duralast®.

S-MD-105DT70 3YR $65588R-MD-105DT70 3YR $468756500
Duralast®

Hamilton's classic liquid cast 95A polyurethane tread bonded to heavy duty iron center.

S-MD-105DT 3YR $61888R-MD-105DT 3YR $431735000
124Forged Steel

Highest capacity drop forged steel tensile strength in the 75,000 psi range.

S-MD-124FST 3YR $919174R-MD-124FST 3YR $7221622300015 1/2
Nylast®

Solid high capacity cast nylon resistant to moisture & many chemicals.

S-MD-124NYB$876100R-MD-124NYB$6809010000
Super Ultralast®

New Ultimate Urethane 1" thick on forged steel center.

S-MD-124STRT 3YR $1,050106R-MD-124STRT 3YR $854967200
Superlast XC®

1" thick harder (70D) poly on forged steel for 30% more capacity than Superlast®.

S-MD-124SYT70 3YR $803106R-MD-124SYT70 3YR $607967800
Superlast®

1" thick 95A polyurethane tread chemically bonded to forged steel center.

S-MD-124SYT 3YR $738103 1/2R-MD-124SYT 3YR $542856000
5Duralast XC®

A harder (70D) liquid cast polyurethane with load capacity 30% higher than Duralast®.

S-MD-125DT70 3YR $692103R-MD-125DT70 3YR $501938000
Duralast®

Hamilton's classic liquid cast 95A polyurethane tread bonded to heavy duty iron center.

S-MD-125DT 3YR $72799R-MD-125DT 3YR $536836200
164Duralast XC®

A harder (70D) liquid cast polyurethane with load capacity 30% higher than Duralast®.

S-MD-164DT70 3YR $741114R-MD-164DT70 3YR $549104700019 1/2
Duralast®

Hamilton's classic liquid cast 95A polyurethane tread bonded to heavy duty iron center.

S-MD-164DT 3YR $669114R-MD-164DT 3YR $4771045500
5Duralast XC®

A harder (70D) liquid cast polyurethane with load capacity 30% higher than Duralast®.

S-MD-165DT70 3YR $1,017125R-MD-165DT70 3YR $82511710000
Duralast®

Hamilton's classic liquid cast 95A polyurethane tread bonded to heavy duty iron center.

S-MD-165DT 3YR $936125R-MD-165DT 3YR $7441157700