Description
OPTIBELT TB SPZ 224/4 PULLEY OPTIBELT | V-grooved Pulley
🔧 Key Specifications
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Brand & Model: OPTIBELT TB SPZ 224/4
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Belt Profile: SPZ (narrow V-belt, ≈9 mm top width)—compatible with SPZ-series belts.
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Grooves: 4
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Pitch Diameter: 224 mm; Outside Diameter: ~228 mm (typically ~231 mm).
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Face Width: ~52 mm (≈13 mm per groove × 4).
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Bore & Mounting: Taper-Lock using 2517 series bush for shafts ≈16–65 mm.
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Construction: Spoked cast iron (EN‑GJL 200), precision-machined.
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Weight: ~5.2 kg.
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Balance: Factory-balanced (one-plane G6.3, suitable up to 1500 rpm; two-plane balancing available for high-speed).
⚙️ Features
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Compact multi-groove design supports higher torque and more belt wraps for efficient power transmission.
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Quick-change Taper-Lock bush enables easy installation and removal without machining the shaft.
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Cast iron build enhances strength and wear resistance while maintaining reduced inertia.
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Precision machining and balancing minimize vibration, belt slippage, and noise on operation.
🏭 Applications
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Ideal for industrial drives including pumps, compressors, blowers, fans, and conveyors.
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Commonly used in packaging, textile, food & beverage, and agricultural machinery.
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Well-suited for systems requiring multiple belts in parallel and frequent pulley servicing.




