Extra Heavy Duty Cast Iron Casters
Cast iron cored wheels for loads that would flat-spot anything softer.
Big Heavy Caster Models
Model prefixes distinguish the bracket type within the same wheel family; capacity is published against each wheel diameter.
CF1801 Heavy Duty Cast Iron Rubber Caster
CF1901 Heavy Duty Cast Iron Caster
CF5031 Heavy Duty Cast Iron Rubber Caster
CP1801 Heavy Duty Cast Iron Rubber Caster
CP1901 Heavy Duty Cast Iron Caster
CP5031 Heavy Duty Cast Iron Rubber Caster
CR1801 Heavy Duty Cast Iron Rubber Caster
CR1901 Heavy Duty Cast Iron Caster
CS1801 Heavy Duty Cast Iron Rubber Caster
CS1901 Heavy Duty Cast Iron Caster
CS5031 Heavy Duty Cast Iron Rubber Caster
CS5031 Heavy Duty Cast Iron Rubber Caster Variant 2
About This Family
At the top of the range the wheel gets a cast iron core. Cast iron cored rubber wheels carry heavy static loads without flat-spotting, and they keep rolling on floors that would chew a plastic wheel.
This range publishes wheel material, diameter, width, overall height and capacity per diameter across fixed, swivel and plate mount variants.
What Goes Wrong Without the Right Extra Heavy Duty Caster
Problem 1
Heavy equipment parked in one place for weeks that flat-spots its wheels and will not roll again.
Problem 2
Foundry, forge and yard floors that destroy plastic and thin rubber wheels in months.
Problem 3
Loads specified on a four-wheel average when in practice three wheels carry everything.
Buyers This Family Is Built Around
Heavy industry and foundries
Hot, rough floors and very heavy static loads.
Machine tool and plant movers
Equipment repositioned rarely but at very high load.
Shipyard and fabrication shops
Jigs, fixtures and sub-assemblies moved across yard floors.
What the Published Specification Gives You
Cast iron cored wheels
A metal core resists flat-spotting under long static loads in a way solid rubber alone does not.
Capacity published per diameter
Four ratings against four diameters, so the caster can be matched to the actual wheel chosen.
Fixed swivel and plate variants
The same wheel is offered across bracket types, so a set can combine fixed and swivel positions.
Wide wheel sections
Section width is published, which is what spreads a heavy point load across a floor.
Where These Are Used
Machine and die handling
Tooling and dies moved between press lines.
Foundry and forge floors
Rough, hot, debris-covered surfaces.
Heavy fabrication
Weldments and sub-assemblies across a shop.
Long-term static equipment
Loads parked for weeks that must still roll.
How to Choose Within This Family
- For long static parking, the metal-cored wheel is the point of this family — a softer wheel will take a set.
- Check your floor can take the point load: a narrow wheel at 400kg concentrates a lot of force on one spot.
- Combine two fixed and two swivel casters where the equipment has to track straight over long distances.
What is not published
Minimum order quantity, lead time, payment terms, warranty and certifications are not published by Renwei, so none of them are stated on this site. Ask for them in writing with your model list before you plan a shipment.
Industries That Buy This Family
Manufacturing and Workshops
Construction and Contracting
Warehousing and Logistics
Reading Before You Specify
Caster Load Ratings Explained
Matching Wheel Material to Your Floor
Big Heavy Caster Questions
Why choose a cast iron cored wheel?
A cast iron core resists deformation under sustained static load, so the wheel does not develop a flat spot when equipment stands for long periods. It also survives rough and hot floors better than plastic.
What capacity is available?
Capacity is published per wheel diameter. A typical model in this range is listed at 150, 250, 300 and 400kg across the 100, 125, 150 and 200mm wheels.
What is the difference between the CP, CS and CF model prefixes?
The prefix distinguishes the bracket type within the same wheel family. Send the mounting arrangement you need with the wheel size and Renwei will confirm which prefix matches.
Will these mark a concrete floor?
Cast iron cored rubber wheels are for industrial floors. On finished or coated floors, choose a polyurethane wheel from the heavy duty caster range instead.
Other Families Buyers Pair With This One
Quote the Big Heavy Caster Range
Send the model numbers you want from the 12 listed above, with quantities and your destination market.