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  1. Home
  2. Casters
  3. Kingpinless Casters
  4. Kingpinless Extra Heavy Duty
  5. Spinfinity ZFSEC2 Casters Series
Spinfinity-Super-Endurance-Dual Wheel-Swivel-Caster
Spinfinity-Super-Endurance-Dual Wheel-Swivel-Caster

Mission-Critical AI Infrastructure

Load Ratings (ea): 350 – 7000 lbs.

These Hamilton Casters have been expressly designed to deliver superior durability and performance for high-load applications across data centers, energy systems, cooling infrastructure, generators, turbines, and heavy industrial equipment. Precision rolling minimizes vibration to protect sensitive electronics and mechanical systems, while optional ESD-safe configurations ensure static control compliance. Maintenance-free design reduces lifecycle costs and downtime risk, enabling design engineers and facilities leaders to specify robust mobility solutions that enhance structural integrity, simplify installation/relocation, and maximize asset lifespan across the entire AI infrastructure ecosystem.

Industries & Applications

  • Data Center Server Racks
  • Power/Cooling Systems
  • AI Material Handling Systems
  • Generator/Turbine Systems

AI Infrastructure Casters

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Endurance Casters

Capacity: up to 1000 lbs.
Choose from EN, ENS, EN2 & ENS2 platforms.
  • CNC Machined forgings
  • Small, compact design
  • Wheel Diameters: 3-1/4” - 5”
Learn More
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Champion Stainless Steel Casters

Capacity: up to 3200 lbs.
  • Rugged hot forged swivel construction
  • CNC machined raceways
  • Wheel Diameters: 4” - 8””
Learn More

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Extra Heavy Duty Casters

Capacity: up to 5000 lbs.
Choose from the EHD platform.
  • CNC machined raceways
  • Twelve wheel types offered
  • Wheel Diameters: 6" - 12"
Learn More
Extra Heavy Duty Dual Wheel Swivel Caster

Heavy Duty Dual Wheel Casters

Capacity: up to 7000 lbs.
Choose from the EHD2 platform.
  • Lower height, more capacity
  • Designed with forged steel kingpin
  • Wheel Diameters: 6" - 12"
Learn More

A Tread for Critical AI infrastructure

All Hamilton AI Infrastructure polyurethane treads feature a 95(A) dynamic responsive polyurethane specially formulated to run much cooler than other industrial polyurethanes and therefore endure less stress fatigue for longer life. The tread is also designed to minimize any flat-spotting inherent with other conventional polyurethane materials.

AI Infrastructure Wheels

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DuraGlide® Wheels

Capacity: up to 7700 lbs.
Wheel Diameters: 2", 3" - 5"
  • ”1 & 2” thick treads for high loads
  • Heavy duty cast iron & forged steel cores
  • Press-fit bushings to eliminate play & reduce noise
Learn More
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UltraGlide® Wheels

Capacity: 750 to 6500 lbs.
Wheel Diameters: 2", 3-1/2" - 5"
  • Multi-wheel design offers high capacity
  • Heavy Duty Die-Cast Aluminum Cores
  • Easy turning under heavy loads
Learn More
3-1/2 Nylast® Wheel

Nylast® Wheels

Capacity: 1500 - 30,000 lbs.
Wheel Diameters: 3-1/2" - 24"
  • Heavy duty cast nylon
  • Highest capacity in category
  • Viable alternative to steel
Learn More

Talk to a Sales Representative. Request more information.

Want to talk to a sales representative about a specific caster or wheel? Fill out the form. We’ll get back to you within 24 hours.


  • Overview
  • Quality Features
  • Wheel Choices
  • Accessories
Overview

The all-new Spinfinity® Super Endurance Dual Caster (ZFSEC2) Series sets a new standard in kingpinless caster design for extra heavy-duty applications. Engineered for rugged performance, these dual-wheel casters deliver unmatched stability, durability, and maintenance-free operation, making them the ideal solution for demanding environments.

These dual-wheel casters feature a completely sealed swivel construction leveraging a new ‘V-Style’ seal that provides exceptional defense against dirt, debris, and moisture. Combined with sealed precision ball wheel bearings, this caster series ensures zero-fix, 100% maintenance-free performance.

For the single wheel version in this caster series, check out Spinfinity® Super Endurance Casters.

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Quality Features
  • Swivel Construction

    Forged steel top plate and fork base; 3/8" x 3" precision laser cut steel legs welded inside and outside to forged steel horn base.

  • Load Bearing 

    3 5/8" diameter CNC-machined and hardened raceway with 1/2" balls.

  • Sealed Swivel Construction 

    The forged ring is CNC-machined with a v-shaped seal made from FKM elastomer to retain grease and keep contaminants out. Zero Fix Spinfinity® = Maintenance-Free.

  • Product Finish

    Powder Coated - Caster rigs are powder coated with Hamilton’s Platinum Powder, a metallic HAA Polyester providing a premium look and excellent durability for both interior and exterior environments.

  • Axle

    3/4" diameter hex head with lock nut.

Wheel Choices

DuraGlide

New 1" thick 95A polyurethane best for higher speeds or outdoor environments.

Duralast XC®

A harder (70D) liquid cast polyurethane with load capacity 30% higher than Duralast®.

Duralast®

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

Forged Steel

Highest capacity drop forged steel tensile strength in the 75,000 psi range.

Nylast®

Solid high capacity cast nylon resistant to moisture & many chemicals.

Superlast XC®

1" thick harder (70D) poly on forged steel for 30% more capacity than Superlast®.

Superlast®

1" thick 95A polyurethane tread chemically bonded to forged steel center.

UltraGlide® 24-7

New 24/7 | AGV multi-wheel superstar - 95A high speed poly on aluminum core.

UltraGlide® Ergo

New ergonomic and quiet-riding superstar - multi-wheel 85A poly on aluminum core.

UltraGlide® XC

New multi-wheel for high load capacity, 70D poly tread on aluminum core.
Accessories
  • Brakes

    Keep safety managers happy with all-steel cam-actuated side foot brake (-FB), or heavy duty face contact brake (-ZB) for more positive locking. Other styles available. Select desired caster from selection table to see brake details.

  • Swivel Lock

    4 Position (★-4SL-SEC) - convert swivel to rigid for straight line steering, robotically welded housing & CNC-milled slots assure long lasting, trouble-free performance.

  • Extra Tough Poly Tread

    For applications moving heavy loads at speeds up to 10 mph, check out Hamilton's Speed Casters.

  • Toe Guard

    Toe Guards help protect workers’ feet and can be used for both manual and power applications.

  • Custom Engineering

    Hamilton engineers will custom design any caster to meet customer requirements. See Custom Gallery

Hamilton Caster

Manufactured Lean in the USA Since 1907

  • CAGE: 26935
  • DUNS: #004232344

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  • Trucks & Trailers E-Catalog

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