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

Elevate industrial and commercial mobility with our Hamilton Spring Loaded Rigid Caster. Engineered for an impressive 620 lbs load capacity, experience a blend of performance, durability, and ease, enhanced by a 6"x2" UltraGlide Ergo Polyurethane Wheel for reduced rolling resistance and optimal ergonomics.
Suited for an array of applications, this Rigid caster is a blend of robust build and high load capacity, ensuring operational efficiency, reduced maintenance, and augmented productivity.
Model R-SPWH-6SWC85-1 is characterized by a 620 lbs load capacity, a 6" x 2" wheel size, crafted from UltraGlide Ergo Polyurethane (85A) on cast iron, and equipped with 1/2" sealed precision ball bearings, amalgamating strength and smooth navigation.
Experience the unmatched quality and durability with Hamilton’s engineering excellence. Each caster is a testament to years of reliability and innovation.
Note: Dive into the world of Hamilton’s innovation, where every feature is meticulously crafted for optimal performance and longevity.
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
Smaller orders ship parcel (UPS/FedEx Ground). Heavy or bulk quantities consolidate to LTL freight. The method and final cost are shown before payment, so there are no post-checkout adjustments.
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.
The Hamilton UltraGlide Ergo is your ultimate solution for heavy-duty, aesthetic, and performance needs, ensuring effortless maneuverability and long-lasting service.
Revel in the caster’s 6-inch UltraGlide wheel, aluminum core, and a versatile weight capacity. Its design guarantees not just smooth operation but an enduring service even under intensive use.
Equipped with a user-friendly mounting plate and optimal dimensions, this caster promises easy installation and unrivaled flexibility in movement, enhancing operational efficiency.
With Hamilton’s signature forged kingpin and precision sealed ball bearings, expect reduced rolling resistance, corrosion resistance, and a visually appealing aesthetic touch from the platinum powder finish.
Adapted for varied industrial and commercial uses, the caster’s design, and capacity make it a staple for enhanced mobility, ensuring every task is executed with precision and ease.
With the designated W-620-SWC85-1/2 replacement wheel and a detailed guide, maintenance becomes a breeze, ensuring your operations are uninterrupted and consistently efficient.
Note: Opt for Hamilton UltraGlide Ergo, where premium quality, unmatched durability, and aesthetic appeal converge for an unparalleled operational experience.
This Hamilton R-SPWH-6SWC85-1 6"x2" UltraGlide Poly Rigid Spring Loaded Caster – 620 lb is rated to 620 lbs per caster. Size a set by dividing the total load by the number of casters, and for uneven floors assume 3 of 4 casters carry the load. Keep continuous-use loads within about 75-80% of the rating.
This caster runs a Cast Iron wheel with a 2" tread width. Steel / iron wheels give maximum capacity and durability on smooth, hard industrial floors and tolerate heat.
This is a Rigid caster. Rigid casters track straight for directional stability. For most mobile equipment we recommend 2 swivel + 2 rigid, or 4 swivel with at least 2 brakes.
Rated for -20°F to 180°F. Operating outside the rated range can reduce wheel life and load capacity, so match it to your environment (wash-down, freezer, oven-adjacent, etc.).
The Cast Iron wheel performs best on smooth, hard industrial floors. For non-marking or clean-environment needs, ask us about matching tread options.
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).
$617.00
| Identification | |
| Brand | Hamilton |
| Dimensions & Mounting | |
| Wheel Diameter | 6" |
| Wheel Tread Width | 2" |
| Rig Type | Rigid |
| Load & Performance | |
| Wheel Capacity | 620 lbs |
| Temp Range | -20°F to 180°F |
| Brake Type | No Brake |
| Materials & Finish | |
| Wheel Material | Cast Iron |
| Frame Material | Zinc Plated Steel |
6" x 2" Thermo Rubber Rigid Caster – 600 lb | 4" x 4-1/2" Plate | CasterHQ
6" x 2" · 600 lbs
$31
6" x 2" Mold-On Rubber Rigid Caster – 550 lb | 4" x 4-1/2" Plate | CasterHQ
6" x 2" · 550 lbs
$32
6" x 2" Mold-On Rubber Swivel Caster – 550 lb | 4" x 4-1/2" Top Plate | CasterHQ
6" x 2" · 550 lbs
$38
View all 6′ 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 | |
|---|---|---|---|---|---|---|
| 550 lbsLighter duty | 6" × 2"Rubber | — | — | $164.00 | View → | |
| 600 lbsLighter duty | 6" × 2"Gray Rubber | Rigid | 7-1/2" | $31.00 | View → | |
| 620 lbs | 6" × 2"Cast Iron | Rigid | — | $617.00 | Viewing | |
| 700 lbsHeavier duty | 6" × 2"Polyolefin | Swivel | — | $25.00 | View → | |
| 700 lbsHeavier duty | 6" × 2"Cast Iron | — | — | $151.00 | View → |





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