KAF Series Hollow Shaft Output Helical Gearbox

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KAF Series Hollow Shaft Output Helical Gearbox

A helical gearbox is a mechanical transmission system that uses helical gears to transfer power between two rotating shafts. They are commonly used in industrial applications that require high torque and efficiency.

KAF series bevel gearbox adopts right Angle output bevel gear drive. Its transmission efficiency is up to 95%, flexible installation forms, high load capacity, superior performance, and input power up to 200kW. It can be used with frequency conversion motors, brake motors, explosion-proof motors, servo motors, AC motors, DC motors, three-phase motors, single-phase motors, etc. Therefore, it is widely used in many different fields. KAF series bevel gearbox is suitable for stereo garages, lifting equipment, environmental protection equipment, metallurgical mining equipment, conveying equipment, etc.

KAF Series Helical Bevel Gearbox Specifications:

Product name: KAF series helical bevel gearbox
Model: KAF37/47/57/67/77/87/97/107/127/157/167/187
Mounting ways: Foot-mounted and flange mounted
Input ways: Motor input, AM (IEC) flange input, and shaft input
Output way: Solid shaft output or hollow shaft output
Efficiency: over 95%
Housing material: HT250 high-strength cast iron
Gear material: 20CrMnTi
Surface hardness of gears: HRC58-62
Input/Output shaft: 40Cr steel
Heat treatment: Carburizing and quenching
Bearing: C&U or another brand
Oil seal: NAK or another brand
Lubricating oil: Gear oil
Packing: Pywood case

KAF Series Hollow Shaft Helical Bevel Gearbox Parameters:

Size 37 47 57 67 77 87 97 107 127 157 167 187
Structure K    KA    KF    KAF    KAZ    KAT    KAB
Input power
0.18-3.0 0.18-3.0 0.18-5.5 0.18-5.5 0.37-11 0.75-22 1.1-30 3-45 7.5-90 11-160 00 18.5
Ratio 5.36-
Permissible torque(N.m) 200 400 600 820 1550 2700 4300 8000 13000 18000 32000 50000

KAF Series Helical Bevel Gearbox Parts Manufacture:

KAF series helical bevel gearbox shell is made of HT250 high-strength cast iron, and the inner cavity is shot, effectively reducing parts wear and rapid heat dissipation and increasing the bearing capacity of the thickened box.

Gear made of low carbon alloy steel, imported grinding machine processing, high hardness, stable performance, after vacuum carburizing treatment, carburizing evenly.

The gear shaft is made of high-strength bearing steel, which has been refined by quenching, with strong bearing capacity and smooth transmission.

The output shaft has been precision machined many times and through strict dynamic and static balance tests to ensure that the reducer runs smoothly, with low noise.

For accessories, we only choose high-precision bearings and imported brand oil seals, effectively reducing friction so that the transmission efficiency is high, with less leakage.


We are one of the best helical gearbox suppliers. We can offer wide helical gearbox stock. We have exported our products to clients around the world and earned a good reputation because of our superior product quality and after-sales service. We warmly welcome customers both at home and abroad to contact us to negotiate business, exchange information, and cooperate with us!

Advantages Of Helical Gearbox:

Helical gearboxes offer several advantages over other types of gearboxes, including:

Higher torque capacity: Helical gears in a helical gearbox have a larger contact area than spur gears, which allows them to deliver higher torque loads.

Smooth and quiet operation: The Angle of the helical gears’ teeth allows them to gradually make contact with each other, resulting in a smooth and quiet operation compared to spur gears.

Higher efficiency: Helical gears in helical gears are more efficient than other types of gears, resulting in reduced power losses and improved energy efficiency.

Higher Carrying capacity: Helical gearboxes have higher carrying capacity compared to other types of gearboxes, which makes them suitable for heavy industrial applications.

Longer life: Smooth and progressive meshing of helical gears results in less wear and tear, which extends the life of the gearbox.

Helical Gearbox Application:

Conveyor systems: Helical gear boxes are commonly used in conveyor systems to transfer power between the motor and the conveyor belt.

Mining equipment: Helical gear boxes are used in mining equipment such as crushers, grinders and conveyors to handle heavy loads and high torque requirements.

Power generation: helical gear box is used for wind generator, hydraulic generator and other power generation equipment, to transfer the power of the rotor to the generator.

Marine applications: Helical gear boxes are used in Marine applications such as ships and boats to transfer power between engines and propellers.

Industrial machinery: Helical gear boxes are widely used in industrial machinery, such as pumps, mixers and extruders, to transfer power between the motor and the equipment being driven.

Automotive applications: Helical gear boxes are used in automotive applications such as transmissions and differentials to transfer power between the engine and the wheels.