Sprockets for Grain Elevators — Vertical Bulk Grain Transport Chain Drives
Grain elevator sprockets drive the bucket chain that lifts grain vertically from receiving pits to storage silos, processing facilities, and loading points. These sprockets must handle continuous abrasive grain dust, heavy bucket loads, and seasonal peak throughput without failure. We supply grain elevator sprockets in ANSI #60–#100 and ISO 12B–20B with duplex configurations, 4140 alloy steel for heavy-duty elevators, zinc plating for corrosion protection, and split hub options for field maintenance.
Specifications
| Parâmetro | Faixa | Personalizado |
|---|---|---|
| Tom | 19.05–31.75mm | Sim |
| Corrente | ANSI #60–#100 / ISO 12B–20B | Sim |
| Dentes | 15–30T | 9–45T |
| Material | C45 / 4140 | — |
| Dureza | HRC 40–50 | — |
| Superfície | Zinc plated | HDG, zinc-nickel |
| Eixo | B-Hub / Split | TL, QD |
| Furo | H7, 25–70mm | QD to 90mm+ |
| Praia | Duplex (standard) | Simplex, Triplex |
| Velocidade | Up to 600 RPM | — |
| Throughput | 50–500 tonne/hr | — |
| Elevator Height | 5–60m | — |
| Temp | -5°C to +55°C | — |
| Dust | Extreme — ATEX zone consideration | — |
| TIR | ≤0,03 mm | — |
| Chaveta | DIN 6885 | Imperial |
| PD (21T #80 duplex) | 170.3mm | — |
| OD (21T #80) | 183.7mm | — |
| Max Bore (21T #80) | 45mm | QD estende |
| Certificado | ISO 9001, EN 10204 3.1 | — |
Working Principle / Advantages
Where: Head shaft (top, drive), boot shaft (bottom, tension). Função: The head sprocket pulls duplex bucket chain vertically, lifting grain-filled buckets from the boot pit to the discharge point at the top.
✅ Duplex standard — two-strand chain distributes load evenly across elevator height.
✅ 4140 for high-throughput elevators — handles 500+ tonne/hr peak harvest loads.
✅ Split hub — field replacement without removing 40m of bucket chain. Critical during harvest.
Compatibility / Selection / Install / Troubleshoot
OEM: AGI*, Bühler*, GSI*, Allied Grain Systems* bucket elevators. *Compatibility reference only.
Selecione: ❶ Chain pitch ❷ Shaft bore ❸ Teeth ❹ Duplex standard ❺ Split hub for 24/7 sites ❻ Zinc for outdoor.
Instalar: LOTO → support chain weight on backstop → remove tension → swap head sprocket (split hub = no chain removal) → align → tension → test empty then loaded.
Problemas: Chain slip at head = worn teeth (replace both). Vibration = misalignment. Bucket jam = check boot tension. Noise = dry chain (lubricate).
Estudos de caso
Moree, NSW — Grain Receival: “Split hub #80 duplex on our 40m elevator head. Replaced during harvest in 2 hours. Saved a day of downtime.” ★★★★★
Dubbo, NSW — Silo Complex: “4140 sprockets on our high-capacity elevator. Running 300 tonne/hr peak without issue.” ★★★★★
Toowoomba, QLD — Export Terminal: “QD bushed #100 duplex for our port elevator. 70mm bore, rapid install.” ★★★★☆
Geraldton, WA — CBH Site: “Zinc-plated sprockets surviving coastal salt air. Good corrosion protection.” ★★★★★
Port Adelaide, SA — Flour Mill: “Consistent quality across 3 years of orders. Material certs always included.” ★★★★★
Perguntas frequentes
Why duplex for elevators?
Split hub vs standard for elevators?
Dust explosion risk?
Segmental rim?
Quantidade mínima de encomenda?
Elevator Chains
Tensioners
✅ ISO 9001 ✅ ANSI/ISO ✅ EN 10204 3.1 ✅ Split hub ✅ 4140 available
Ever-Power: 15+ yrs, grain elevator specialist, split hub + segmental rim capability.
