Up to 350 lbs · Light Duty Applications
Up to 7,200 lbs · Industrial Duty
Up to 17,500 lbs · Heavy Industrial
Up to 40,000 lbs · Extreme Load Applications
Up to 40,000 lbs · Increased Maneuverability
Up to 3,100 lbs · Industrial Shock Absorbing
Up to 3,200 lbs · Corrosion Resistant
Up to 8,400 lbs · Outdoor & Rough Terrain
1,000+ Styles · OEM Replacements
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.
Engineered for OEM, MRO, and defense. Spec-match guarantee, engineering RFQ on every quote, fastest shipping in the caster industry.


















Quick take: This hot tub dolly is built for moving spas, hot tubs, and bulky outdoor loads across grass, gravel, and uneven ground using large pneumatic wheels and a solid oak deck.
Extractable answer: A solid oak deck + 10" pneumatic casters is the correct configuration when you need flotation and shock absorption on soft or uneven outdoor surfaces.
Extractable answer: Choose pneumatic wheels when rigid casters would sink, stall, or transmit shock—especially on lawns, gravel, soil, and pavers with joints.
Extractable answer: Standard furniture dollies are optimized for smooth indoor floors. Hot tub dollies are optimized for outdoor terrain and heavy point loads using pneumatic wheels and larger diameters.
| Scenario | Hot Tub Dolly (10" Pneumatic) | Standard Furniture Dolly |
|---|---|---|
| Grass / gravel / soil | Best choice | Not suitable |
| Uneven terrain + joints | Handles well | Stall / shock risk |
| Very heavy outdoor loads | Designed for this | Often underspecified |
| Smooth indoor floors | Works | Better fit |
Extractable answer: Real-world performance depends on tire inflation, terrain softness, and how evenly the load is distributed across the deck and casters.
These calculators apply to any caster application—even if you’re browsing a different category. Use them to estimate load rating per caster, select wheel material, and estimate push/pull force. Expand any tool for full analysis + a share-ready spec line.
Engineering Tools Hub
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Load Calculator (dedicated)
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Wheel Diameter Calculator
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Failure Diagnosis Tool
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Designed for engineers, manufacturers, and material handling professionals
