Chicago Die Cast 2 / 2-1/2 / 3-1/2 / 4 in. D X 5/8 in. D Zinc V-Groove 4-Step Pulley

Meet the Chicago Die Cast 4‑Step V‑Groove Pulley—a compact, versatile belt-drive component built from durable zinc die cast. Designed to simplify gear selection, it offers four distinct outer diameters in one integrated pulley: 2", 2-1/2", 3-1/2", and 4". With a 5/8" bore, this pulley is ready to mount on compatible shafts, delivering reliable belt tracking and smooth operation across a range of small machines and DIY projects.

Key specifications

• Material: Zinc die cast
• Product type: V‑Groove 4‑Step Pulley
• Outer diameter options: 2", 2-1/2", 3-1/2", 4"
• Bore diameter: 5/8"
• Brand: Chicago Die Cast

Why this 4‑step design stands out

Traditional belt drives often require multiple pulleys to achieve different gearing. This single 4‑step pulley consolidates four belt sizes into one robust component, saving space, reducing parts clutter, and simplifying setup. The V‑groove geometry keeps belts aligned under load, minimizing slip and wear for longer belt life and steadier performance in everyday bench-top machines, hobbyist projects, and light-duty drives.

Ideal applications

• Small belt‑driven machines and workshop tools
• DIY projects and educational setups where quick gearing adjustments are valuable
• Compact drive systems where space and cost constraints favor a multi‑groove solution

Practical tips for best results

• Verify that your drive system uses a standard V‑belt and that the belt width matches one of the grooves offered by the pulley.
• Mount on a shaft with a 5/8" bore; ensure proper alignment between driver and driven pulleys to maximize efficiency and belt life.
• When configuring gearing, select the outer diameter that provides the desired speed/torque balance for your specific application.
• Inspect grooves for wear and keep belts clean and free of debris to maintain smooth operation.