Description
Technical Overview
Manufacturers produce this structural caster housing component to provide an adjustable mounting interface for mobile wheel configurations within various modular assemblies. To establish high tensile strength, engineers construct the part from injection-moulded Polyamide 66 reinforced with 30% glass fibre (PA66+GF30). Consequently, this advanced materials architecture delivers exceptional dimensional stability under heavy directional loading. Furthermore, the housing geometry incorporates a continuous 360-degree swivel mechanism. An integrated 628RS rubber-shielded ball bearing supports this system, which functions actively as a low-friction pivoting interface. As a direct result of this bearing integration, the housing permits smooth omnidirectional track steering and maximises rotational efficiency during shifts in direction.
Additionally, the base layout features integrated alignment interfaces configured specifically to mount flush into your standard profiles. For instance, four included T-slot alignment tabs index directly into the profile tracks. By doing so, they successfully prevent structural twisting or tracking deviation under continuous mechanical stress. Moreover, the complete assembly accommodates a standard M8 mechanical fastener array. Therefore, these hardware fasteners anchor the non-driven pivoting core firmly against the extrusion faces. This direct integration securely locks the setup into place without requiring any secondary machining or drilling operations.
Applications
Designers specify this mobile mounting hardware primarily for framework mobilization utilizing standard 40 Series T-Slot linear profile systems. To build these mobile structures, technicians apply the component to establish directional pivoting wheels on dynamic industrial setups. Specifically, they install the housing onto utility transport carts and factory material handling trolleys to increase maneuverability. Furthermore, the assembly provides highly responsive directional changes across modular machine platforms. It also mobilizes safety enclosures and mobile diagnostic framing units that undergo frequent repositioning on the workshop floor.
Simultaneously, the completed structural assembly tracks evenly on industrial flooring to enable uniform weight distribution across multi-axis wheel configurations. Because the component secures directly into the external profile slots, users can adjust or reposition the caster mounting points dynamically. Therefore, this spatial flexibility allows you to adapt the framework to suit changing geometric configurations over time. Ultimately, this functional versatility makes the part highly suitable for rolling custom workbench assemblies and material handling kiosks. It also reinforces dynamic modular frames that are regularly subjected to localized impact shocks.
Maker Store Tips and Tricks
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Ensure the four T-slot alignment tabs seat completely into the structural extrusion tracks before tightening the primary assembly fasteners to ensure correct axial tracking.
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Fully tighten the M8 nylon lock nut to limit unexpected axial play, but avoid over-torqueing beyond structural limits to prevent binding the inner 628RS swivel bearing assembly.
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Periodically inspect the rubber shields of the integrated 628RS bearing for structural integrity when using the hardware in environments exposed to moisture or fine particulate debris.
Package Includes:
- 1 × 4-Inch Wheel House
- 4x T-Slot Alignment Tabs
- 1 x M8 x 40mm Cap Head Bolt
- 1x M8 x 50mm Cap Head Bolt
- 1x M8 Nylon Lock Nut
Wheel House Technical Drawings:
| A | B | C | D | E | Weigth |
| 40mm | 40mm | 24.5mm | 8mm | 8.5mm | 122g |
Products to Pair with 4-inch Wheel House- 40 Series
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4-Inch Free-Spinning Wheel
$19.99 Inc. GST Add to cart -


Allen Key Wrench 9-Piece Set
$34.13 Inc. GST Add to cart -

M8 Cap Head Bolts
Price range: $3.61 through $11.55 Inc. GST Select options This product has multiple variants. The options may be chosen on the product page -

T-Slot 40 x 40mm – 40 Series – HEAVY Duty – Silver
Price range: $27.57 through $92.88 Inc. GST Select options This product has multiple variants. The options may be chosen on the product page -

T-Slot 40 x 80mm – 40 Series – HEAVY Duty – Silver
Price range: $72.74 through $225.21 Inc. GST Select options This product has multiple variants. The options may be chosen on the product page
What makes T-Slots such an easy assembly task?
Building frames out of T-Slot extrusions is easy because they eliminate the need for specialised tools or welding, simplifying the assembly process. Building frames using T-Slot Linear Rail will require;
- 40 Series T-Slot Extrusions: These are the main structural components, usually made of aluminium, with slots along their lengths that allow you to easily connect various parts and accessories.
- 40 Series Brackets and Connectors: These are specialised components designed to fit into the T-Slot extrusions and secure them together at various angles. They include corner brackets, T-nuts, L-shaped brackets, and other connectors.
- Fasteners: Bolts, screws, and nuts are required to attach the brackets and connectors to the T-Slot extrusions securely.
- Tools: Basic hand tools like wrenches, Allen keys (hex keys), and screwdrivers are necessary for assembly. Additionally, a saw may be needed to cut the T-Slot extrusions to your desired lengths.
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