Factory Price Uhmw-pe Plastic Large Sprocket Wheel Plastic Gear

Factory-price UHMW-PE plastic large sprocket wheels — Korea Ever-Power supplies ultra-high molecular weight polyethylene large sprocket wheels at direct-from-factory pricing, CNC-machined to any large diameter from UHMW-PE plate, rod, or block stock. Large UHMW-PE sprocket wheels (OD 150 mm to over 1,000 mm) are the preferred choice for heavy-duty conveyor chain drives in food processing, mining, chemical processing, and agricultural industries where the combination of extreme wear resistance, near-zero friction, outstanding chemical resistance, and FDA food-contact compliance is required — and where the size and quantity make injection moulding uneconomical. Korea Ever-Power's factory-direct pricing eliminates trader margins, offering the most competitive pricing available for industrial-grade large UHMW-PE sprocket wheels with full material certification and quality traceability.

Korea Ever-Power's factory-price large UHMW-PE sprocket wheels serve as excellent replacements for cast iron, fabricated steel, and stainless steel large sprockets — saving 40–65% of the metal sprocket cost while delivering superior noise reduction, zero lubrication maintenance, and elimination of corrosion in wet, chemical, and food-processing environments. Quote within 24 hours. 25–35 day lead. Video QC before delivery.

Large UHMW-PE

Drive Sprocket

Custom Large

Lightweight Property of Large UHMW-PE Sprockets

Small plastic gears are used for their low density in applications where weight is a direct performance factor (toy drives, battery-powered devices). For large sprocket wheels, the lightweight property takes on additional significance: a large UHMW-PE sprocket (OD 400 mm, 25 mm face, 10T, 50B chain) weighs approximately 2.8 kg vs 22.4 kg for the equivalent steel sprocket — an 87% weight reduction. This dramatically reduces the rotational inertia (I = mass × radius²) that the drive motor must overcome on start-up and during speed changes, reducing peak motor current, extending motor and gearbox service life, and enabling faster conveyor acceleration/deceleration cycles.

Low Coefficient of Friction — Heavy-Duty Chains

Large sprocket wheels operating under heavy chain tensions and high chain speeds generate significant frictional heat at the tooth-chain contact zone. UHMW-PE's ultra-low friction coefficient (μ ≈ 0.04–0.08) minimises this heat generation — the chain-UHMW-PE interface remains cool even at high chain speeds (> 2 m/s), preventing the thermal softening and accelerated wear that limits nylon and POM sprockets in high-speed, high-tension heavy chain drives. The compatibility of different standards including MIL-STD-45662A and ANSI-45208A is maintained by Korea Ever-Power's precision CNC machining to chain pitch standards.

Dimensional Stability Under Moisture — Critical for Large Sprockets

For large sprocket wheels, dimensional change from moisture absorption is proportionally more critical than for small sprockets. A nylon large sprocket (OD 400 mm) absorbs 2–3% water — a diametral growth of 8–12 mm — completely disrupting the chain pitch alignment. UHMW-PE's < 0.01% water absorption produces essentially zero dimensional change (< 0.04 mm on the same OD 400 mm sprocket) through repeated wet-to-dry cycles. This is the fundamental reason UHMW-PE dominates food processing conveyor chain drive applications where daily high-pressure CIP washing is standard practice.

Elastic Modulus and Temperature Effects

Small plastic gears — elastic modulus depends on temperature, loading rate, humidity, and chemical exposure (data obtainable by tensile testing and dynamic mechanical analysis). For large UHMW-PE sprocket wheels, the lower elastic modulus (0.5–0.8 GPa vs steel's 200 GPa) means the tooth root deflects more under high chain tension — this tooth deflection must be considered in the sprocket design to ensure the tooth does not deflect so far that adjacent teeth are brought into simultaneous contact with the chain. Korea Ever-Power's sprocket design engineers verify tooth deflection at maximum design chain tension before production.

Face Width — Less Than 0.01 Inches Wide?

Small plastic gear faces are usually less than 0.01 inches wide for micro-gear applications. Large UHMW-PE sprocket wheels require face widths matched to the chain strand width — typically 25–80 mm for heavy industrial chains. Korea Ever-Power CNC-machines the face width to the exact chain standard dimension plus a guide flange on each side to prevent lateral chain walk-off. The guide flange geometry is particularly important for large sprockets where the chain tension is high and lateral forces from conveyor path curvature would otherwise cause chain disengagement.

Pumping and Cutting Applications

UHMW-PE large sprocket wheels are also used in pumping applications (peristaltic pump roller sprockets) and in cutting machine chain drives (saw chain drives for timber processing, stone cutting machine chain drives). In these applications, the UHMW-PE sprocket's near-zero friction and self-lubrication eliminate the lubricant contamination that would compromise product quality — timber and stone surfaces are contaminated by grease from metal sprocket lubrication. UHMW-PE sprockets in these applications operate completely dry without wear penalty.

Mining and Bulk Material Handling

Large UHMW-PE sprocket wheels (OD 300–800 mm) on coal, ore, and aggregate conveyor chain drives. Mining chain drives operate under the highest chain tensions of any industrial application — and in abrasive slurry environments where UHMW-PE's exceptional abrasion resistance (lowest wear rate of any engineering plastic) directly extends sprocket life from months (nylon/POM) to years. The factory-direct pricing makes UHMW-PE large sprockets competitive with fabricated steel alternatives when total life-cycle cost is compared.

Food Processing — Large Format Lines

Large UHMW-PE sprocket wheels in poultry, fish, and meat processing conveyor main drive stations; large vegetable washing conveyor drives; and bakery tunnel oven chain conveyors. Large food processing conveyors require large sprockets (OD 300–600 mm) where the high tooth count distributes chain tension across many teeth simultaneously — and UHMW-PE's FDA compliance, CIP washdown resistance, zero lubrication, and corrosion freedom are all essential properties for food processing conveyor main drives.

Chemical and Petrochemical Plant

Large UHMW-PE sprocket wheels in chemical plant maintenance conveyors, hazardous material handling chains, and offshore platform equipment drives. UHMW-PE's resistance to virtually all industrial chemicals (acids, alkalis, solvents, oils) at temperatures below 80°C, combined with its excellent impact strength at low temperatures (cryogenic service capability), suits the full temperature and chemical exposure range of chemical and petrochemical plant environments where stainless steel sprockets are otherwise required at very high cost.

Large Agricultural Equipment

Large UHMW-PE sprocket wheels in combine harvester main chain drives, sugar cane processor chain conveyors, and cotton gin chain drives. Agricultural main chain drives use large sprockets (OD 200–500 mm) at high chain tensions — demanding a sprocket material with both high abrasion resistance (grain, soil, straw abrasives) and chemical resistance (crop residue acids, cleaning solvents). UHMW-PE satisfies both requirements in agricultural main chain drive service.

Timber and Woodworking

Large UHMW-PE sprocket wheels in sawmill log conveyor chain drives, timber processing line chain heads, and wood chip conveyor drives. The zero-lubrication property of UHMW-PE sprockets eliminates oil contamination of timber surfaces — a product quality requirement for premium timber processing. The resistance to wood tannins and sawmill chemical treatments that corrode steel ensures long service life in timber processing environments.

Waste and Recycling Facilities

Large UHMW-PE sprocket wheels in waste sorting conveyor main drives, recycling line chain conveyors, and compost facility material handling drives. Waste and recycling environments combine the most aggressive conditions for chain drives: abrasive materials (glass, metal fragments, grit), corrosive chemicals (organic acids, leachate), and continuous 24/7 operation. UHMW-PE large sprocket wheels have been proven in these applications to last 3–5× longer than steel sprockets, which corrode and wear rapidly in leachate and abrasive waste contact.

What is the maximum size of UHMW-PE large sprocket wheel Korea Ever-Power can produce?

Korea Ever-Power CNC-machines UHMW-PE large sprocket wheels up to approximately OD 1,200 mm × 150 mm face width, limited by the available UHMW-PE plate and block size and the CNC machining centre's work envelope. For very large sprockets above OD 800 mm, Korea Ever-Power can supply segmented sprocket designs — the large sprocket is manufactured as 3 or 4 arc segments that are bolted together on-site around the existing shaft, eliminating the need to dismantle the shaft and bearings for sprocket replacement. Segmented UHMW-PE large sprocket designs are available from Korea Ever-Power for all standard heavy chain pitches.

How does Korea Ever-Power's factory-direct pricing compare with trading company or distributor pricing?

Korea Ever-Power operates its own CNC machining facility and sources UHMW-PE plate and rod directly from resin manufacturers — there is no intermediate trading company or distributor in the supply chain. International B2B buyers who source large UHMW-PE sprocket wheels through trading companies typically pay 30–50% above Korea Ever-Power's factory-direct price for equivalent specification and quality. Korea Ever-Power provides the same ISO9001 quality documentation, FDA material certificate, and pre-shipment inspection as any premium-priced supplier — at factory-direct pricing. Request a quotation and compare with your current supplier.

"We operate a fish processing facility and replaced all stainless steel large sprocket wheels (OD 380 mm, 50B chain, 14T) with UHMW-PE sprockets from Korea Ever-Power. Previous stainless sprockets required weekly degreasing and showed significant pitting after 6 months in fish processing acids. UHMW-PE sprockets at 18 months: zero wear measurement, zero surface degradation in daily CIP with 2% NaOH solution. Noise reduction: 11 dB(A). No lubrication for 18 months. Factory-direct price: 47% below our previous stainless supplier per sprocket. Will never return to stainless."

Kim Gyeong-ho  |  Production Manager, Incheon Marine Foods Processing Co.  ·  Q1 2026

"We manage coal mine conveyor maintenance and trialled UHMW-PE large sprocket wheels (OD 520 mm, 50A heavy chain, 11T) from Korea Ever-Power on our most abrasive conveyor head station. Steel sprockets lasted 8 months on this conveyor. UHMW-PE sprocket at 14 months: tooth wear measurement 0.6 mm — equivalent steel sprocket was replaced at 4.2 mm at month 8. Projected UHMW-PE life: > 3 years. Korea Ever-Power also supplied a segmented design for the tail sprocket that we fitted without shaft removal — 2-hour replacement vs 16 hours for the previous bolted steel sprocket."

Lee Cheol-min  |  Conveyor Maintenance Manager, Gyeonggi Mining Equipment Co.  ·  Q3 2025