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DH Casters swivel caster 4 inch DuraPoly is a plate mount medium duty caster built for jobs that demand frequent movement and repositioning. The swivel design lets the caster rotate under load, so platform trucks, carts, and equipment can change direction smoothly in tight work areas. The 4 inch wheel diameter and 2 inch tread width give a compact footprint that still supports substantial weight, which helps when you are balancing maneuverability with floor space and storage rack clearances. A 660 lb load capacity allows a single caster to support heavy service loads, so four casters under a cart can handle significant combined weight when configured within that rating. The integrated brake on the swivel caster locks the wheel, so carts and equipment stay put when loaded, which matters on slightly sloped floors or when loading and unloading bins, tools, or materials.
This plate mount swivel caster uses a plate size of 3-15/16 inches by 4-1/2 inches, so it is suited to frames or bases with mounting areas that match this footprint. The plate mounted design spreads the 660 lb load rating across the mounting surface, which matters on platform trucks and flatbed carts built from steel or wood decks. The 4 inch wheel diameter and 2 inch tread width sit under that plate, so overall height and clearance can be planned around those dimensions during fabrication. Because it is a swivel type caster with a brake, mounting it at the corners of carts or containers gives both steering capability and holding power, helping installers plan layouts that balance maneuverability with stable parking at workstations.
This plate mounted caster is categorized under plate mounted casters and described for applications such as platform trucks, flatbed carts, containers, automotive equipment, distribution carts, and warehouse equipment, so it fits naturally into material handling builds around those uses. The 660 lb load capacity per caster allows equipment designers to configure multiple units under a deck to support combined loads appropriate for medium duty handling within that rating. The 4 inch wheel diameter and 2 inch tread width create a compact rolling contact patch that carries weight without being oversized, which is useful when carts need to pass through narrow aisles or between machinery lines. The red Dura br Poly non-marking wheel keeps floors looking clean in show-through areas of warehouses or automotive shops. Because it is a swivel caster with brake, it is well-suited to the steering end of a cart or truck, where operators rely on controlled rotation and then need to hold position for loading and unloading.
The double ball heat treated raceways in this swivel caster support repeatable turning performance when weights approach the 660 lb capacity, which helps operators feel consistent resistance from one move to the next and reduces unexpected caster behavior. Double-welded legs add structural stability around the wheel, maintaining alignment when carts encounter floor transitions, so rolling remains predictable over time. The nut-and-bolt kingpin design keeps the swivel assembly secure, supporting longer service intervals in automotive equipment and warehouse equipment that see constant motion. Zinc plating limits rust formation on exposed steel, which helps mounting plates stay sound at the interface with trucks and carts in typical indoor environments. Zerk fittings give a direct point for adding grease to bearings, supporting smoother swivel and wheel rotation and helping maintain performance across multiple shifts. The non-marking Dura br Poly tread protects finished and sealed concrete in distribution carts and platform trucks, supporting clean, professional traffic lanes through work areas.
The C-MHD4DPRSB is a DH Casters swivel caster with a brake and plate mount, which lets carts steer easily and then hold position when the brake is applied.
This swivel caster has a 660 lb load capacity, so one caster can support that weight rating, which helps plan total support when installing multiples on a truck or cart.
The wheel diameter is 4 inches and the tread width is 2 inches, giving a compact size that still carries substantial loads on platform trucks and warehouse equipment.
The plate size is 3-15/16 inches by 4-1/2 inches, so mounting surfaces must match this footprint to support the swivel caster securely on carts and equipment bases.
The caster is described for platform trucks, flatbed carts, containers, automotive equipment, distribution carts, and warehouse equipment, fitting typical material handling setups.
The red Dura br Poly wheel is non-marking, so it protects finished or sealed floors in warehouses and automotive areas while equipment is moved frequently.
The DH Casters C-MHD4DPRSB swivel caster with 4 inch red Dura br Poly wheel, brake, and plate mount combines a 660 lb load capacity, non-marking tread, and a 3-15/16 inch by 4-1/2 inch plate suited to common material handling frames. Its double ball heat treated raceways, double-welded legs, nut-and-bolt kingpin, zinc plating, and zerk fittings support dependable swivel action in platform trucks, flatbed carts, containers, automotive equipment, distribution carts, and warehouse equipment. For builds in these applications, this medium duty caster provides a defined set of mounting and performance details to match with your truck or cart designs.