
From municipal clarifiers to demanding mining thickeners, reliable solids handling starts with a drive matched to the job. ClearStream’s heavy-duty drives combine precision bearing technology, flexible configurations, and engineering support for new installations and existing equipment.
The right configuration for your process
Tank layout, rake design, and torque requirements guide drive selection. ClearStream offers:
- Cage drives: Center-column-mounted units that support the bridge, walkway, and suspended cage assembly.
- Shaft drives: Full-span-bridge-mounted units that suspend the shaft and rake mechanism, with access for inspection and service.
- Dual drives: Independent drives for sludge collection and an additional impeller or flocculating mixer in solids contact and flocculating clarifiers.

Precision built into the design
ClearStream’s four-point-contact main bearing uses Gothic arch geometry to distribute overturning loads across the raceway, reducing concentrated loading and wear.
Heavy-duty cage drive features include a precision gear, primary parallel helical gearmotor, secondary planetary reducer, and hydraulic torque indication. Commercially available components support practical serviceability over the equipment’s operating life.

Options for demanding conditions
- Automatic lift: Torque systems raise the rake assembly when torque rises, with manual push-button lowering.
- Multi-pinion drives: Two, three, or four pinion stacks accommodate exceptionally high torque requirements.
- Hydraulic drives: Cage and shaft configurations for heavy-solids and high-density thickening applications, with a torque dial and optional 4–20 mA remote monitoring.

- Direct drives: A lower-cost option for smaller, light-duty clarifiers under 25 feet in diameter and appropriate mixing applications, with built-in torque measurement and optional remote monitoring.
Extend the value of existing equipment
Replacing an aging drive can help preserve useful treatment infrastructure. ClearStream engineers custom adapter plates to connect new drive technology to existing cage or shaft rake mechanisms, helping simplify installation and limit disruption.
- Precision Bearing Upgrades: Bring new life to aging rotating equipment by replacing outdated drives with modern precision bearing technology.
Drive Replacement for Any Brand
Have a clarifier or thickener drive from another manufacturer? ClearStream can engineer a replacement for any drive brand, matching the new unit to your existing equipment and operating requirements.
Our replacement and retrofit capabilities include:
- Drive changeouts: Replacement solutions tailored to existing equipment interfaces and torque requirements.
- Precision bearing upgrades: Modern drive technology for aging rotating equipment.
- Custom adapters: Engineered connections to existing cage or shaft mechanisms.
- Installation support: Field inspection, engineering assistance, and turnkey supply and installation services.
Support Throughout Your Equipment’s Lifecycle
ClearStream develops a detailed 3D model for every unit manufactured to support site-specific fit-up and operator familiarization. Services include field inspection, engineering assistance, installation support, and turnkey supply and installation.

- Turnkey Installation: A one-stop solution for your drive replacement needs, from engineering and equipment supply through installation and startup.
- Field Service & Operator Support: On-site training, troubleshooting, and technical support to help operators maintain reliable equipment performance.
Let’s find the right drive for your system
For a new installation or replacement, share your tank diameter, existing drive manufacturer and model, torque requirement, rake configuration, and available photos or drawings. ClearStream can help identify the right solution.
Explore ClearStream’s drive solutions at ClearStreamEng.com, or contact our team at 801-676-1890 or info@clearstreameng.com.
