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Casters 101: Quick guide on finding the right caster - FAST!
First time looking for casters and don't know the options and terminology? Read on for a quick & easy beginner's guide to finding what you need. Keep in mind, you can always call for assistance.
Tutorial Chapters:
Lesson 1: Caster Types - Determine what product to look for.
Most casters can be categoried into one of the groups shown below. Click on the picture for a listing of the respective casters on our website.
Other caster types exist, but if you are using or needing those, you are probably beyond the need for this tutorial. You might just call with your questions.
ball-caster

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Ball Casters, sometimes called Planetary Casters
    Easy rolling, elegant casters for many applications.
    Sizes from 1-1/2" to 3" diameter.
    Variety of finishes
    Metal or rubber tread available
    Larger sizes available with brakes.
twin-wheel-caster

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Twin Wheel Casters
    Economical and widely used; relatively wide range of pricing
    Sizes from 40mm (1-3/8") to 125mm (5") in diameter. Tip: the bigger the caster, the easier it rolls and overcomes obstacles or debris. Chair casters are best at 60mm (2-3/8") or 75mm (3"). For the small cost, you will be thankful for years for getting a larger size. Check the load heights if that is a factor for your application.
    Various tread types available: Hard nylon is good for carpet and durable surfaces. Polyurethane and TPR rubber are good for vinyl, hardwood, and tile.
    Brakes are available with most models.
    Available with or without hoods. Hoods are also available in a variety of finishes.
spherical-caster

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Spherical (or Hooded Ball) Casters
    Economical and widely used
    1-5/8" ball available in rubber or hard plastic
    2" ball available in hard plastic
    Brakes not available
    Hoods available in a several finishes.
single-wheel-casters
Single Wheel Casters
    No link at left as these can be found in many categories.
    Furniture sizes typically to up 5" and industrial up to 16" diameter wheels.
    Considerable price variety depending on wheel material, bearing quality, and size.
    Wheel & total-lock brakes often available.
    Rigid models available.
    Good choice when higher weight capacities are needed.
    Available in various rig materials and finishes including steel, nylon, stainless, black and others.
dual-wheel-caster

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Dual Wheel Casters
    Provide higher weight capacity with a lower profile. Generally 2" and 3" diameter, though industrial, heavy-duty dual-wheel casters also available.
    Considerable price variety depending on wheel material, bearing quality, and size.
    Available with plates, threaded stems and grip ring stems.
    Wheel brake & total-lock brakes available.
    Rigid models available (top plate connector only).
    Also available with a single, wider wheel.
ball-transfer

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Ball Transfers
    Provide omni-directional mobility.
    Extremely easy rolling.
    Available with plates, threaded stems and grip ring stems.
    Nylon balls available.
    Stainless ball and housings available.
    No braking possible.
floor-locks

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Floor Locks (a/k/a Truck Locks)
    Provide firm braking for carts.
    Must be precisely matched with casters - typically 1/8" higher load height.
    Never meant to be load bearing.
caster-padscaster-pads

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Caster Pads (a/k/a Quick-Change Plates)
    Quick way to remove or replace casters.
    Must be matched with caster plate size and sometimes with caster manufacturer.
    Snap-in and bolt-in styles available.
    Bolt-on and weld-on styles available.
caster-sockets

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Caster Sockets
    Used to receive and retain casters and glides.
    Slide in, screw-on and weld-on sockets available for tubing, wood or metal applications.
    Available for standard Grip-Neck, Grip-Ring and Threaded Stems.


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