TECHNICAL LIBRARY
Selection guides, engineering calculations and maintenance references for plastic modular belts, flat top chains and sprockets - written by the Veybelt technical team.
Four caliper measurements and two photos identify almost any plastic modular belt, even when the original part number is worn off or belongs to a machine builder's internal system. Here is what to measure, how to measure it, and the two mistakes that send the wrong belt to site.
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The 986 series is a 25.4 mm (1 in) pitch modular belt in flat top and flush grid (22.8% open) surfaces, molded in POM or PP with belt strength up to 30,851 N/m on 12/16/20-tooth POM sprockets. This guide compares the two variants and lists what else goes on the order to complete a 986 conveyor.
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The 976 series is a 25.4 mm (1 in) pitch modular belt in PP or PE, rated at 14,650 N/m, with flat top, perforated flat top (7.7% open) and nub top surfaces. The nub top carries sticky or delicate flat product on point contacts so it releases cleanly. This guide covers all three variants, the 12/16/20-tooth sprockets and the accessories.
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The 966 series is a 25.4 mm (1 in) pitch modular belt rated at 26,800 N/m in POM, built in flat top, flush grid (25.3% open) and raised rib surfaces. Pair the raised rib with finger transfer plates and product crosses belt ends without a gap. This guide covers the three variants plus the sprockets and parts that go with them.
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The 956 series is a 50.8 mm pitch modular belt built in three surfaces: flat top, flush grid and perforated flat top, all driven by the same 8/10/12-tooth POM sprockets. This guide walks through each variant, the drive components that fit, and the accessories you need to spec a complete 956 conveyor in one order.
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The 936 series is a 38.1 mm pitch modular belt with 33,000 N/m (PP) belt strength and a 25% open surface, sold in flush grid and nub top styles on POM sprockets. This guide compares the two and covers the drive parts and spares that belong on the same order.
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The 926 series is a fine 12.7 mm pitch, 8.9 mm thin modular belt molded in PP (9,500 N/m) or POM (21,200 N/m), in flat top and flush grid surfaces with single-row or double-row sprockets. Here is how the two variants differ and what goes on the order with them.
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The 900 series is a 27.2 mm small-pitch modular belt with four surfaces: flat top, flush grid, perforated flat top and raised rib. Open area runs up to 31.7%, the POM build is rated 40,300 N/m, and the raised rib version takes finger transfer plates. Here is how to pick a surface and what to order with it.
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The 5935 series is a 19.05 mm fine-pitch modular belt built in flat top, flush grid and perforated flat top surfaces, molded in PP, POM or PE and driven by 9/13/17/24-tooth POM sprockets. Here is how the three surfaces differ, which sprockets and accessories go with them, and what to put in the inquiry so the whole conveyor arrives in one order.
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The 400 series is a 50.8 mm pitch, heavy-strength modular belt rated at 39,200 N/m (PP), sold in flush grid and raised rib surfaces on 10/12/16-tooth POM sprockets. This guide compares the two variants and covers the drive parts, transfer plates and spares that complete a 400 conveyor.
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The 1100 series is our 15.24 mm micro-pitch modular belt, the smallest pitch in the straight-running range, made as flat top or flush grid (7.7% open) and driven by 16/24/32-tooth POM sprockets. This guide covers where micro pitch earns its money, how the two surfaces differ, and what to send for a quote.
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The 1000 series is a 25.4 mm pitch modular belt with a thin 8.7 mm module, built as flat top or flush grid and driven by 16/18/22-tooth POM sprockets. In POM it reaches 39,300 N/m, unusual strength for a belt this thin. Here is how the two surfaces compare and what goes on the order.
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Radius (side-flexing) modular belts run curves and spirals on a single drive, so you lose the transfer points and get the floor space back. This guide explains turn radius and edge collapse in plain terms, then compares the Veybelt 300, 916, 2400 and 7100 by pitch, strength and turning capability.
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The OPB series is a 50.8 mm pitch, 16 mm thick modular belt platform with five surface styles, running from a fully closed flat top out to a 29% large open grid, all on the same 8/10/12-tooth POM sprockets. This guide walks the open-area ladder variant by variant and covers the drive parts and accessories that finish the conveyor.
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Narrow down from 20+ plastic modular belt series in three steps: pitch, belt strength, then surface style. This master index puts every Veybelt series in one comparison table, from 12.7 mm fine-pitch belts up to 2-inch heavy platforms, radius belts and flat top chains, with a link to the dedicated buyer's guide for each.
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Flat-top chains carry bottles, cans and packs single-file on a smooth, continuous plate. This guide covers when a flat-top chain beats a modular belt, how the straight-running 820, side-flexing 880 and heavy-duty 880HD differ, and the drive/idler wheels, spiral plate and 40P-60P miniature plates that round out the range.
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Modular belts are named by series number (pitch family) plus surface style. Learn how to read series codes and measure pitch, rod diameter and thickness to identify any belt for replacement.
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Plastic modular belts expand with temperature: PP 0.13, PE 0.18, POM 0.12 mm per meter per degree C. Use dL = L x P x dT to size clearances - worked example included.
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Select a modular belt in 4 steps: match pitch to load and transfer size, choose PP/PE/POM by temperature and chemicals, set open area by drainage needs, then pick the surface type.
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Modular plastic belts use hinged, sprocket-driven modules while conventional belts rely on friction-driven rubber/PVC. Here is a point-by-point comparison of drive, maintenance, hygiene and cost.
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