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HB Series Drywell/Mixer

Leak-proof industrial helical gearboxes for critical applications

The HB series mixer gearboxes are specially designed with advanced sealing systems for environments sensitive to oil leaks. Featuring reinforced bearings, special seals, and an additional oil leakage reservoir, they offer exceptional reliability in the food, pharmaceutical, and wastewater treatment industries.

Torque range: 11,000 - 70,000 Nm

Reduction ratio: 6 - 419

Configurations: 7 sizes available

Protection: IP55 to IP66 depending on the application

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Main features

Forced and reinforced output shaft bearings to withstand high radial and axial loads
Triple sealing system with special seals and additional oil leakage reservoir
Integrated labyrinth seal for optimal protection against dust and contaminants
Optional oil sensor for early leak detection and predictive maintenance
Precision-machined GG25 cast iron housing for exceptional rigidity and durability
Hardened and ground helical gears for quiet operation and optimal efficiency
Modular design allowing for different mounting and drive configurations

Product range

The HB series comprises 7 different sizes covering a wide torque range from 11,000 to 70,000 Nm, specially designed for mixing and stirring applications in leak-sensitive environments.

Detailed technical data

Setting	Value	Unit
Nominal torque	11,000 - 70,000	Nm
Reduction ratio	6 - 419	-
Output shaft diameter	Ø110 - Ø180	mm
Output shaft length	210 - 300	mm
Degree of protection	IP55, IP65, IP66	-
Serving temperature	-20°C to +120°C	°C
Typical yield	94-96%	-

Size chart

Reduced size	Range of reports [i]	Nominal torque [Nm]	Shaft diameter/length [mm]
H062	8 - 107	11,000	Ø110/210
H072	6 - 318	19,000	Ø120/210
H082	8 - 403	24,000	Ø130/250
H092	6 - 339	29,000	Ø150/250
H102	8 - 419	36,000	Ø160/300
H112	6 - 314	55,000	Ø170/300
H122	8 - 404	70,000	Ø180/300

Technical advantages

Characteristic	Profit
Reinforced bearings	Exceptional resistance to high radial and axial loads in mixing applications
Triple leak-proof system	Virtual elimination of oil leaks in sensitive environments
Additional leak tank	Containment of micro-leaks and protection of the production environment
Maze joint	Superior protection against dust and external contaminants
Optional oil sensor	Early leak detection for predictive maintenance and increased safety

Available options

Oil level sensor and electronic leak detector
FDA/USDA specialty coatings for the food industry
NSF H1 edible oils for accidental contact with products
Fan or heat exchanger cooling systems
Custom assemblies for integration into mixing tanks
Vibration and thermal monitoring instruments

Areas of application

HB Series gearboxes are specifically designed for critical applications where oil leaks are unacceptable:

Food industry - Dough mixers, fermentation tanks, confectionery mixers
Wastewater treatment - Basin agitators, sludge mixers, biological reactors
Pharmaceutical industry - Reaction tanks, active ingredient mixers, bioreactors
Chemicals and cosmetics - Cream mixers, emulsifiers, polymerization tanks
Biotechnology - Fermenters, bioreactors, cell culture systems

Competitive advantages

Absolute waterproofing

Our triple sealing system with integrated leakage reservoir guarantees total protection against oil leaks, essential for the food and pharmaceutical industries where contamination must be absolutely avoided.

Industrial robustness

Reinforced bearings and robust design enable support for the significant radial and axial loads generated by mixing propellers, even in the most demanding applications.

Regulatory compliance

Designed to meet the strictest food and pharmaceutical industry standards (FDA, USDA, EHEDG), with coating and lubricant options that meet food safety requirements.

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