How to Select a Gearbox for Mining Agitators (Quick Guide)
H1: Mining Agitator Gearbox Selection: 4 Key Steps
Mining agitators handle abrasive, heavy slurries (Specific Gravity 1.3–1.8) under 24/7 operation. Selecting by motor kW alone leads to broken gears. Use this quick 4-step guide to find the right heavy-duty reducer.
H2: 1.Selection of reducer for mining mud mixer based on torque rather than motor power
Agitator gearboxes are torque devices. You must ensure the gearbox's rated output torque exceeds your starting torque (which is higher than running torque due to settled solids).
H2: 2.The correct service factor (SF) for the application of mining mixers
Multiply your working torque by the Service Factor. For mining slurries, never use SF < 1.5.
| Application | Recommended SF |
|---|---|
| Standard Mixer (Light slurry) | 1.25 – 1.5 |
| Mining Slurry (Abrasive, continuous) | 1.5 – 2.0 |
| High Settling Slurry (Heavy start load) | 2.0 (Treat as severe shock) |
H2: 3. The heavy-duty mining gearbox series matches your proportion
Agitator shaft speeds are usually 10–40 r/min. Choose the right stage:
| Series | Stages | Ratio Range | Best For |
|---|---|---|---|
| ZLY Series | 2-Stage | 6.3 – 20 | Higher speeds, smaller tanks |
| ZSY Series | 3-Stage | 22.4 – 100 | Standard choice for heavy slurries & low speeds |
H2: 4. Check Mining-Specific Requirements
Overhung Load: Impellers create massive radial loads. Verify the output shaft and bearings.
Thermal Power: 24/7 operation in hot plants requires cooling fans or circulating oil.
Environment: Specify IP55+ for dust, and ATEX/Explosion-proof motors for underground or coal areas.
H2: Get a Fast Engineering Review
Don't risk downtime. Send us your agitator power (kW), shaft speed (r/min), and slurry density. Our engineers will verify the ZLY/ZSY frame size, service factor, and thermal limits for you.