Up to 350 lbs
Up to 7,000 lbs
Up to 16,000 lbs
Up to 40,000 lbs
Shock absorbing
Outdoor / rough terrain
View All Specialty Casters
Browse all specialty caster types
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.
Specialty Casters
Gate Casters
BBQ Pit & Smoker Casters
Keyed Drive Wheels
Drywall Cart Casters
Skid Wheels & Casters for RVs
Leveling Casters
Shopping Cart Wheels & Casters
Band Equipment Casters & Wheels
Low Profile Casters
Cart Wheels & Casters
Toolbox Caster Sets
Bakery & High Temperature Casters
Kitchen Prep Table Caster Sets
Wire Shelving Casters
Silent Glide Casters
This product listing is the most common U-Boat Cart Replacement Wheel Set. U-Boats are commonly seen on Home Depot Carts, Lowes Carts, At Home Carts, Platform Trucks, Stock Carts, Grocery Store Carts, etc. This listing is for two pieces of our 8" x 2" Polyurethane on Polyolefin Wheels and four pieces of our 4" x 1-1/4" Polyurethane on Polyolefin Wheels for a total of six replacement wheels. We also include the replacement axles and lock nuts for all wheels included. The wheel configuration on this listing is a direct replacement for U-Boat carts with two 8" wheels for the middle of the carts and four 4" wheels for the corners. Industry-standard replacement wheels and a direct fitment for almost all major brand u-boat carts.
This setup is commonly seen on a lot of retail and grocery store stock carts. Please note that the 4" x 1-1/4" casters on this listing is different than the caster sizes seen on the home depot and lowes carts. We do offer replacement casters for home depot carts and lowes carts known as u-boat casters and wheels which can be found on our u-boat caster page and the title will be labeled home depot cart casters and wheels.
Direct-Fit Replacement wheels for most U-boat carts that are commonly found in places like Home Depot, Lowes, & Grocery Stores
Kit includes two 8" x 2" polyurethane wheels for the middle and four 4" x 1-1/4" polyurethane wheels for the corners
Includes replacement Axles & Nuts | Two 1/2" x 3-3/8" zerk axles for the 8" middle wheels & four 3/8" x 2-1/4" bolts for the 4" corner wheels
Wheels are High Quality, Non-marking, & floor safe and roll very smooth and quiet | Wheels hold up to 1,800 lbs Capacity after installation
Direct High-Quality OEM Replacement Wheels | (Not Off Brand)
Order processing
In stock. Orders placed before 12pm CT (Mon–Fri) typically ship the same or next business day from our Mansfield, TX warehouse.
Shipping method
Because of its size and weight, this item typically ships LTL freight on a pallet. Smaller add-on items may ship parcel. Freight cost is calculated by destination and shown before payment, or quoted for large orders.
Payment & procurement terms
New to CasterHQ? Open an account or request terms and send your resale or tax-exemption certificate before ordering so it is applied at checkout.
Volume pricing & quotes
Quantity discounts apply automatically — no codes needed. For large, recurring, or custom requirements, request a bulk quote and our team will confirm pricing, lead time, and total landed freight upfront.
Returns & warranty
Stock items carry a 30-day return policy in unused, resalable condition. Made-to-order and custom items are non-returnable once production starts. All products carry the manufacturer's warranty against defects.
Central & Southern U.S.: typically 1–2 business days
East & West Coasts: typically 2–3 business days
Remote areas and freight deliveries may take longer.
For pallet freight, scheduled releases, or blanket purchase orders, contact our team and we'll confirm total landed cost before you commit. Direct line: 844-439-4335.
This 8" & 4" Polyurethane U-Boat Platform Truck Wheel & Axle Kit – 1,800 lb is rated to 1800 lbs per wheel. Divide the total load across the number of wheels in your rig and keep working loads within about 75-80% of the rating for continuous use.
This is a Polyurethane wheel. Polyurethane protects finished floors, rolls quietly, and resists most chemicals while carrying heavy loads.
8" diameter x 2" tread width. Verify your axle diameter and hub/bore length against your existing wheel before ordering.
Yes. Most wheels can be paired with a swivel or rigid rig to build a complete caster. Tell us your mount and load and we will spec the rig - request it on our bulk pricing page.
Rated for -20°F to 180°F. Operating outside the rated range can shorten wheel life and reduce capacity.
We accept purchase orders and offer Net 30 on approved accounts, ACH, and all major cards, plus tax-exempt ordering with a resale or exemption certificate. Volume discounts apply automatically; request a bulk quote for large or recurring orders. Stock items carry a 30-day return policy in unused condition (made-to-order items are non-returnable once production starts).
$117.00
| Dimensions & Mounting | |
| Wheel Diameter | 8" |
| Wheel Tread Width | 2" |
| Load & Performance | |
| Wheel Capacity | 1800 lbs |
| Temp Range | -20°F to 180°F |
| Materials & Finish | |
| Wheel Material | Polyurethane |
| Wheel Core Material | Polyolefin |
| Frame Material | Zinc Plated Steel |
8" x 2" Red Ductile Steel Swivel Caster – 1,500 lb | 4-1/2" x 6-1/4" Plate
8" x 2" · 1500 lbs
$89
8" x 2" Gray Iron Semi Steel Industrial Replacement Wheel – 1,400 lb | CasterHQ
8" x 2" · 1400 lbs
$32
8" x 2" Phenolic Rigid Kingpinless Caster – 1,400 lb | 4" x 4-1/2" Top Plate
8" x 2" · 1400 lbs
$36
View all 8′ x 2′ casters & wheels →
Your selection is highlighted. Every option shares its wheel size and mount; a Direct fit tag means the same mounting plate — a drop-in replacement. Step up or down in load rating, all in-stock.
| Casters (in stock) | Load capacity | Wheel | Type | Overall height | Price | |
|---|---|---|---|---|---|---|
| 1400 lbsLighter duty | 8" × 2"Phenolic | — | — | $28.00 | View → | |
| 1500 lbsLighter duty | 8" × 2"Ductile Iron | Swivel | 9-1/2" | $89.00 | View → | |
| 1800 lbs | 8" × 2"Polyurethane | — | — | $117.00 | Viewing | |
| 2500 lbsHeavier duty | 8" × 2"Ductile Iron | — | — | $57.00 | View → | |
| 2800 lbsHeavier duty | 8" × 2"Gray Rubber | — | — | $98.00 | View → |





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