Maxi-Duty Casters (MD) Series Capacity to 20,000 lbs.

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Maxi-Duty Casters
Series MD - Cap. to 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


Tapered Roller Bearings	Precision Ball Bearings

Maxi-Duty Series Selection Table

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= available for 24 Hour PRONTO^® shipment 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. =Three Year Warranty applies									Dimensions in inches
Wheel			Swivel Caster			Rigid Caster			Load Cap. Lbs.	Overall Height B	Swivel Offset G
Dia.	Face	Hover over the Wheel Type to see more information. Type	Click on the Model Number to view details about the Caster. Model Number	MSRP	Wt. Lbs.	Click on the Model Number to view details about the Caster. Model Number	MSRP	Wt. Lbs.	Load Cap. Lbs.	Overall Height B	Swivel Offset G
6	3	Forged Steel Highest capacity drop forged steel tensile strength in the 75,000 psi range.	S-MD-63FST	$480.00	61	R-MD-63FST	$295.00	44	12000	10	2 1/2
6	3	Nylast® Solid high capacity cast nylon resistant to moisture & many chemicals.	S-MD-63NYB	$482.00	48	R-MD-63NYB	$297.00	27	5400	10	2 1/2
8	3	Forged Steel Highest capacity drop forged steel tensile strength in the 75,000 psi range.	S-MD-83FST	$482.00	61	R-MD-83FST	$297.00	44	14000	11	2 1/2
		Nylast® Solid high capacity cast nylon resistant to moisture & many chemicals.	S-MD-83NYB	$544.00	48	R-MD-83NYB	$359.00	28	7200
		Super Ultralast® New ultimate urethane 1" thick on forged steel center.	S-MD-83STRT	$691.00	65	R-MD-83STRT	$506.00	48	4200
		Superlast XC® 1" thick harder (70D) poly on forged steel for 30% more capacity than Superlast®.	S-MD-83SYT70	$562.00	64	R-MD-83SYT70	$377.00	48	4500
		Superlast® 1" thick 95A polyurethane tread chemically bonded to forged steel center.	S-MD-83SYT	$528.00	64	R-MD-83SYT	$343.00	47	3500
	4	Forged Steel Highest capacity drop forged steel tensile strength in the 75,000 psi range.	S-MD-84FST	$550.00	76	R-MD-84FST	$360.00	59	17000
10	3	Forged Steel Highest capacity drop forged steel tensile strength in the 75,000 psi range.	S-MD-103FST	$505.00	71	R-MD-103FST	$332.00	55	6500	13	3
	3	Nylast® Solid high capacity cast nylon resistant to moisture & many chemicals.	S-MD-103NYB	$599.00	55	R-MD-103NYB	$426.00	42	8200
	4	Forged Steel Highest capacity drop forged steel tensile strength in the 75,000 psi range.	S-MD-104FST	$562.00	90	R-MD-104FST	$390.00	74	18000
		Super Ultralast® New ultimate urethane 1" thick on forged steel center.	S-MD-104STRT	$881.00	87	R-MD-104STRT	$708.00	68	6000
		Superlast XC® 1" thick harder (70D) poly on forged steel for 30% more capacity than Superlast®.	S-MD-104SYT70	$682.00	87	R-MD-104SYT70	$510.00	68	6500
		Superlast® 1" thick 95A polyurethane tread chemically bonded to forged steel center.	S-MD-104SYT	$628.00	85	R-MD-104SYT	$456.00	68	5000
	5	Duralast XC® A harder (70D) liquid cast polyurethane with load capacity 30% higher than Duralast®.	S-MD-105DT70	$631.00	88	R-MD-105DT70	$452.00	75	6500
	5	Duralast® Hamilton's classic liquid cast 95A polyurethane tread bonded to heavy duty iron center.	S-MD-105DT	$596.00	88	R-MD-105DT	$416.00	73	5000
12	4	Forged Steel Highest capacity drop forged steel tensile strength in the 75,000 psi range.	S-MD-124FST	$886.00	174	R-MD-124FST	$698.00	162	23000	15 1/2	3 1/4
		Nylast® Solid high capacity cast nylon resistant to moisture & many chemicals.	S-MD-124NYB	$886.00	100	R-MD-124NYB	$657.00	90	10000
		Super Ultralast® New ultimate urethane 1" thick on forged steel center.	S-MD-124STRT	$1,013.00	106	R-MD-124STRT	$824.00	96	7200
		Superlast XC® 1" thick harder (70D) poly on forged steel for 30% more capacity than Superlast®.	S-MD-124SYT70	$774.00	106	R-MD-124SYT70	$586.00	96	7800
		Superlast® 1" thick 95A polyurethane tread chemically bonded to forged steel center.	S-MD-124SYT	$711.00	103 1/2	R-MD-124SYT	$523.00	85	6000
	5	Duralast XC® A harder (70D) liquid cast polyurethane with load capacity 30% higher than Duralast®.	S-MD-125DT70	$668.00	103	R-MD-125DT70	$484.00	93	8000
	5	Duralast® Hamilton's classic liquid cast 95A polyurethane tread bonded to heavy duty iron center.	S-MD-125DT	$701.00	99	R-MD-125DT	$517.00	83	6200
16	4	Duralast XC® A harder (70D) liquid cast polyurethane with load capacity 30% higher than Duralast®.	S-MD-164DT70	$729.00	114	R-MD-164DT70	$530.00	104	7000	19 1/2	3 1/4
	4	Duralast® Hamilton's classic liquid cast 95A polyurethane tread bonded to heavy duty iron center.	S-MD-164DT	$659.00	114	R-MD-164DT	$460.00	104	5500
	5	Duralast XC® A harder (70D) liquid cast polyurethane with load capacity 30% higher than Duralast®.	S-MD-165DT70	$995.00	125	R-MD-165DT70	$796.00	117	10000
	5	Duralast® Hamilton's classic liquid cast 95A polyurethane tread bonded to heavy duty iron center.	S-MD-165DT	$917.00	125	R-MD-165DT	$718.00	115	7700