Bevel gears

ATA Gears designs and manufactures various types of bevel gears for various types of applications, ranging from the simplest low-load motion transfer mechanisms to the most demanding high-speed multi-megawatt power transmission drives. Whether it be straight, skew or spiral bevel gears with small or large angle shaft, we have the design and manufacturing capability. ATA’s main product, the spiral bevel gear, offers smoother and more gradual tooth meshing to reduce noise and impact on the teeth. As spiral bevel gears can bear heavy loads at high speeds, our bevel gears are used in the world’s biggest and most demanding mechanic thrusters with over 10 MW power.

Cylindrical gears and splines

ATA Gears’ production capabilities and knowhow for cylindrical gears and splines are the result of decades of experience and development with all viable technologies – both traditional tooth cutting methods and state-of-the-art 5-axis machining methods. As pioneers of 5-axis machining for bevel gears, we are the technology leader in that field, and we apply this same knowhow in the production of cylindrical gears and splines.

The greatest advantages of 5-axis methods for cylindrical gears are that no special tooling is needed and the gear design is not restricted by the limitations of conventional gear cutting/grinding machines. So we can optimize tooth geometries much more freely and small-batch project with critical leadtimes become more economically viable. Basically all kinds of cylindrical gear geometries are feasible: spur, helical, double helical, crossed helical, curved tooth couplings, gear racks, etc. Splines of basically any geometry are also possible: involute, straight-sided and serration profiles being the most common. In addition to cylindrically-shaped spline connections, face tooth couplings are also feasible (e.g. Hirth coupling). With this vast capability, we can offer our customers complete deliveries, which often brings big benefits in the order process, classification and project management.

Dimensions of shafts and gear wheels

Shafts up to
Diameter 1 000 mm / 39 in
Length 4 000 mm / 160 in
Weight 4 000 kg / 8 800 lbs

Gear wheels up to
Diameter 3 000 mm / 117 in
Height 1 000 mm / 40 in
Weight 10 000 kg / 22 000 lbs

Product dimensions near the maximum dimensions should be checked case by case as other factors such as weight and tooth geometry may impose limitations.

Even larger sizes can be achieved through cooperation with our dedicated and trusted subcontractor network.