Description
OPTIBELT TB SPZ 250/3 PULLEY OPTIBELT | V-grooved Pulley
🔧 Key Specifications
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Brand & Model: OPTIBELT TB SPZ 250/3
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Belt Profile: SPZ (narrow V‑belt, ~9 mm top width)
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Grooves: 3
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Pitch Diameter: 250 mm
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Outside Diameter: 254 mm
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Face/Overall Width: 40 mm
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Bore Type: Taper‑Lock, using bush series 2012, accommodating shaft bores from approximately 14–50 mm
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Material & Construction: Cast iron, spoked design, precision-machined
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Length Through Bore (Hub): ~32 mm
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Weight: ~9.5 lb (≈ 4.3 kg)
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Balance Grade: Typically G6.3 (one-plane) for up to 400 mm or 1500 rpm; can be two-plane balanced per ISO if needed
⚙️ Features
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Three precise SPZ grooves ensure reliable belt tracking and efficient power transmission.
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Taper‑Lock bush simplifies installation and removal—just tighten a few screws to mount securely.
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Spoked cast iron design offers durability while minimizing mass and inertia.
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Factory-balanced (G6.3) for reduced vibration; opt for two-plane balancing for high-speed applications per ISO guidelines
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Corrosion-resistant finish, typical of Optibelt’s standard phosphated surface treatment.
🏭 Applications
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Ideal for industrial machinery, including pumps, compressors, blowers, and fans.
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Common in packaging, textile, material handling, and food & beverage systems.
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Well-suited to agricultural equipment and general-purpose drives requiring compact multi-groove pulleys.
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Great for maintenance-intensive environments with frequent pulley swaps, thanks to the easy taper-bush system.
