SAF Series Hollow Shaft Output Helical Gearbox

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SAF 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.

SAF series spiral worm gearbox is one of the four series spiral gear reducers. We use highly rigid cast iron as its shell material, which has a large bearing capacity. The inner hard tooth surface gear is made of high-quality alloy steel. The surface is carburized, hardened, and hardened. The hardness of the tooth surface is up to 58-62hrc, and the grinding accuracy of the tooth surface is up to 56. The worm gear part is made of wear-resistant high-quality copper, fine grinding teeth, smooth transmission, low noise, large bearing capacity, low-temperature rise, and long service life.

From the box to the inner gear, the SAF series spiral worm gearbox adopts a utterly modular structure design suitable for mass production. The selection is flexible. This type of gearbox model is divided in the form of reduced torque. Compared with the traditional equal proportion division, it can better meet the requirements of customers and avoid power waste.

SAF Series Hollow Shaft Helical Gearbox Specifications:

Product name: SAF series helical gearbox
Model: SAF37、SAF47、SAF57、SAF67、SAF77、SAF87、SAF97
Mounting ways: Foot mounted, flange mounted, torque arm
Input ways: Motor input, AM (IEC) flange input, and shaft input
Output way: Solid shaft output or hollow shaft output
Efficiency: up to 96%
Housing material: HT250 high-strength cast iron
Worm Gear material: High-quality copper
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: Plywood case

SAF Series Hollow Shaft Helical Gearbox Parameters:

Size 37 47 57 67 77 87 97
Structure S  SA  SF  SAF  SAT  SAZ
Input power(kW) 0.18-0.75 0.18-1.5 0.18-3 0.25-5.5 0.55~7.5 0.75-15 1.5-22
Ratio 10.27~165.71 11.46-244.74 10.75-196.21 11.55-227.20 96-241.09 11.83-223.26 12.75-230.48
Permissible torque(N.m) 90 170 300 520 1270 2280 4000

SAF Series Hollow Shaft Helical Gearbox Features:

● SAF series helical gearbox with high technical content, including helical gear and worm gear integrated transmission, improves the torque and efficiency of the machine. This series of products has complete specifications, a wide rotation speed range, good universality, suitable for various installation methods, safe and reliable performance, long service life, and has implemented the international standard requirements.

● The convex surface of the body has the functions of heat dissipation, strong vibration absorption, low-temperature rise, and low noise.

● This machine has good sealing performance and strong adaptability to the working environment.

●SAF series helical gearbox has high transmission accuracy, is especially suitable for frequent starting occasions, can be connected with various reducers and configured with various types of motor drives, and can be installed in the 90-degree drive operation position.

●The key parts and components of the SAF series helical gearboxes are made of high wear-resistant materials and have undergone special heat treatment, featuring high machining accuracy, smooth transmission, small size, large bearing capacity, and long service life.

● Helical gear reducer can be used with all kinds of motors, forming mechanical and electrical integration, fully ensuring the quality of the product characteristics.



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.