Sprockets for Rock Crushers — Extreme Shock-Load Chain Drives
Rock crusher sprockets drive the chain mechanisms in jaw crushers, cone crushers, impact crushers, and feeder systems used in quarrying, mining, and construction aggregate production across Australia. These sprockets endure the most extreme shock loads, abrasive dust, and vibration of any industrial application. We supply crusher sprockets in 4140 alloy steel with induction-hardened teeth HRC 45-55, QD/split hubs, and full EN 10204 Type 3.1 traceability.
Specifications
| Parameter | Range | Custom |
|---|---|---|
| Pitch | 25.4–50.8mm (1″–2″) | Yes |
| Chain | ANSI #80–#160 / ISO 16B–32B | Yes |
| Teeth | 15–45T | 9–76T |
| Material | 4140 Alloy Steel | 4340 for extreme |
| Hardness | HRC 45–55 | — |
| Hub | QD / Split | TL |
| Bore | 30–120mm | QD to 150mm+ |
| Strand | Duplex / Triplex | — |
| Speed | Up to 400 RPM | — |
| Shock Factor | 3x rated (intermittent) | — |
| Dust | Extreme — silica, limestone | — |
| TIR | ≤0.03mm | — |
| Keyway | DIN 6885 | Imperial |
| Surface | Black oxide | HDG |
| Temp | -10°C to +60°C | — |
| PD (21T #100) | 213.0mm | — |
| OD (21T #100) | 228.0mm | — |
| Max Bore (21T #100) | 55mm | QD extends |
| Fatigue Life | >5M shock cycles | — |
| Cert | ISO 9001, EN 10204 3.1 | — |
Working Principle / Advantages
Where: Crusher feeder chain drive, discharge conveyor head, vibrating grizzly mechanism, crusher toggle drive. Function: Transmit high-torque, shock-loaded power from motor/gearbox to crusher feed and discharge mechanisms.
✅ 4140 alloy steel survives 3x shock overloads — C45 cracks under crusher impact loading.
✅ HRC 45-55 resists abrasive rock dust — unhardened teeth erode within weeks.
✅ Split hub for field replacement — crusher downtime costs AUD 5,000-20,000/hour.
Compatibility / Selection
OEM: Metso*, Sandvik*, FLSmidth*, Terex*, Kleemann* crushers. *Compatibility ref only.
Select: ❶ Chain from existing crusher ❷ 4140 material (minimum for crushers) ❸ QD/split hub ❹ Duplex or triplex ❺ Specify shock factor.
Case Studies
Pilbara, WA — Iron Ore Crusher: “4140 #120 triplex on our primary jaw crusher feeder. Surviving extreme shock loads in 50°C heat. 8 months running.” ★★★★★
Hunter Valley, NSW — Coal Crusher: “Split hub #100 for discharge conveyor. Replaced during planned shutdown in 90 minutes.” ★★★★★
Gladstone, QLD — Limestone Quarry: “QD bushed #80 on our cone crusher. 80mm bore, rapid install on large shaft.” ★★★★☆
Adelaide Hills, SA — Aggregate Plant: “4140 with full material cert. Our structural engineer verified composition.” ★★★★★
Kalgoorlie, WA — Gold Mine: “Heavy-duty crusher sprockets used across our processing plant. Consistent quality.” ★★★★★
FAQ
Why 4140 for crushers?
Split hub for crusher sprockets?
Dust protection?
Compatible with Metso/Sandvik?
MOQ?
Heavy Chains
QD Bushings
✅ ISO 9001 ✅ 4140 standard ✅ EN 10204 3.1 | Ever-Power: crusher sprocket specialist, 15+ yrs mining experience.
