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KB Series

Bevel/helical gear reducers for mixers - Sealed version

The KB series mixer gearboxes are designed with reinforced sealing systems for environments sensitive to oil leaks. Equipped with forced bearings, special seals, and a recovery tank, they meet the stringent requirements of the food, pharmaceutical, and wastewater treatment industries.

Ratio range: 6 - 15.681

Rated torque: 600 - 20,000 Nm

Size range: 8 models available

Applications: Industries sensitive to leaks

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Main features

Reinforced output shaft bearings to withstand the high radial and axial loads of mixers
Triple sealing system: special seals, recovery tank and labyrinth seal
Optional oil sensor for early leak detection
Bevel/helical gear design for optimal power transmission
Robust cast iron housing with anti-corrosion treatment for humid environments
Precision-machined output shafts for easy mounting of mixing propellers
Compact design allows for installation in confined spaces.

Product range

The KB series comprises 8 different sizes covering a torque range of 600 to 20,000 Nm, specially designed for mixing applications in industries sensitive to oil leaks.

Detailed technical data

Setting	Value	Unit
Nominal torque	600 - 20,000	Nm
Report range	6 - 15,681	-
Output shaft diameter	Ø40 - Ø120	mm
Output shaft length	80 - 210	mm
Degree of protection	IP65, IP66, IP67	-
Serving temperature	-10°C to +80°C	°C
Noise level	< 70 dB(A)	dB

Size chart

Reduced size	Report range [i]	Nominal torque [Nm]	Shaft diameter/length [mm]
K.B28	6 - 3.333	600	Ø40/80
K.B37	6 - 3.467	820	Ø40/80
K.B47	6 - 5.227	1,550	Ø50/100
K.B57	7 - 6.612	2,700	Ø60/120
K.B67	8 - 12,681	4,300	Ø70/140
K.B77	7 - 15.619	8,000	Ø90/170
K.B87	10 - 12,789	15,000	Ø110/210
K.B97	12 - 15,681	20,000	Ø120/210

Technical advantages

Characteristic	Profit
Triple sealing system	Near-total elimination of the risk of oil leaks in sensitive processes
Reinforced bearings	Exceptional resistance to radial and axial loads from mixers
Recovery tank	Containing potential micro-leaks before they become problematic
Maze joint	Effective protection against the infiltration of dust and particles
Bevel/helical gears	Silent power transmission and optimal energy efficiency

Available options

Oil level sensor with alarm
Cooling fan for heavy-duty applications
Food-grade epoxy coating for the pharmaceutical and food processing industries
Various types of output shaft (smooth, splined, flanged)
Condition-based monitoring system
Special assemblies for mixing tanks

Areas of application

The KB series gearboxes are specifically designed for mixing applications in leak-sensitive environments:

Food processing industry - Mixing tanks, mixers, kneaders, homogenizers
Wastewater treatment - Aeration tanks, sludge mixers, oil separators
Pharmaceutical industry - Reaction tanks, active ingredient mixers
Chemistry and cosmetics - Reactors, pigment mixers and creams
Biotechnology - Fermenters, bioreactors, culture tanks

Competitive advantages

Absolute waterproofing

Our patented triple-sealing system guarantees total protection against oil leaks, essential for maintaining process purity and preventing product contamination in sensitive industries.

Industrial robustness

Designed to withstand the harsh conditions of continuous mixing applications, with oversized bearings and heat-treated shafts for extended service life.

Versatility and adaptability

With 8 sizes covering a torque range from 600 to 20,000 Nm and variable ratios, the KB series adapts to most industrial mixing applications while meeting the strictest hygiene standards.

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