Casters
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Whirlaway Casters

Capacity Range: 200 - 500 lbs.

  • Swivel Construction
Cold forged steel mounting plate and horn base. Legs 1/4" plate steel, formed for increased strength and continuously welded to horn base.
  • Kingpin
Permanent rivet type, 5/8" diameter heat treated steel.
  • Main and Secondary Load Bearings
Hardened and polished steel balls rotate in two smoothly coined, case hardened raceways.
  • Axle
1/2" diameter bolt with lock nut.
  • Lubrication Fittings
In swivel assembly and to roller bearings in most wheels.
  • Brakes
- Keep safety manager happy with all-steel cam-actuated side foot brake (-FB), or tread contact brake (-CB) for more positive locking. Other styles available. Select desired caster from selection table to see brake details.
  • Swivel Lock
Field installable (-4SL)- convert swivel to rigid for straight line steering.
  • Sealed Swivel Assembly
(-SS)- prolongs caster life in harsh environments.
  • Wheel Bearing Seals
(-BS)- prolong wheel life in harsh environments.
  • Thread Guards (most models)
 
 
The Whirlaway Series is the cold forged companion to the MS, GS, and 52 Series, but scaled down for 1-1/2" wide wheels. The two separate coined and case hardened raceways, joined by a heat treated rivet kingpin, make Whirlaway Swivel Casters top performers and sellers in the 500-600 lb. duty class.

Rugged 1/4" thick mounting plates are ideal for distortion-free welding to all types of mobile equipment, or bolt them on through slotted holes that fit two popular template patterns. All Series WW casters sport bright zinc plated finish.
Hamilton Precision and Durability
At Hamilton we understand that fast delivery is critical. That's why as you browse our website, you'll notice the proliferation of a red star (). 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.
Whirlaway-Swivel-Caster-WW
#S-WW-5P Swivel w/ Plastex Wheel

Whirlaway-Rigid-Caster-WW
#S-WW-5M Rigid w/ Metal Wheel

Wheel Choices
Whirlaway Series Selection Table
= available for 24 Hour PRONTO® shipment Dimensions in inches
Wheel
DiameterFaceType
3 1/41 1/2

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

Fiber-reinforced phenolic resin wheel.

41 1/2

Injection molded polyolefin: water resistant high impact strength.

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

Heavy duty cast iron with extra thick hubs, CNC-machined in our USA factory..

1500 psi 70A Rubber vulcanized to heavy duty
cast iron center.

Fiber-reinforced phenolic resin wheel.

51 1/2

Injection molded polyolefin: water resistant high impact strength.

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

Heavy duty cast iron with extra thick hubs, CNC-machined in our USA factory..

1500 psi 70A Rubber vulcanized to heavy duty
cast iron center.

Fiber-reinforced phenolic resin wheel.

61 1/2

Injection molded polyolefin: water resistant high impact strength.

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

1500 psi 70A Rubber vulcanized to heavy duty
cast iron center.

Fiber-reinforced phenolic resin wheel.

81 5/8

Soft, non-marking gray rubber (70A) bonded to aluminum core

Model NumberMSRPWeight
Lbs.
Load
Capacity
Lbs.
Overall
Height
S-WW-3D$5664755 1/4
S-WW-3P$375.50550
S-WW-4AZ$3444005 5/8
S-WW-4D$626550
S-WW-4M$486.25550
S-WW-4R$536200
S-WW-4P$384.50550
S-WW-5AZ$364.504506 1/2
S-WW-5D$676.50550
S-WW-5M$557550
S-WW-5R$566.50240
S-WW-5P$385550
S-WW-6AZ$395.255507 1/2
S-WW-6D$708.25550
S-WW-6R$577.50280
S-WW-6P$396550
3759 1/2
Model NumberMSRPWeight
Lbs.
Load
Capacity
Lbs.
Overall
Height
R-WW-3D$5154755 1/4
R-WW-3P$324.50550
R-WW-4AZ$303.254005 5/8
R-WW-4D$575.25550
R-WW-4M$435.50550
R-WW-4R$485.25200
R-WW-4P$333.75550
R-WW-5AZ$313.754506 1/2
R-WW-5D$635.75550
R-WW-5M$506.25550
R-WW-5R$515.75240
R-WW-5P$344.25550
R-WW-6AZ$344.255507 1/2
R-WW-6D$657.25550
R-WW-6R$526.50280
R-WW-6P$355550
R-WW-8AR$5273759 1/2