Are you looking for a helical gear units?
In most cases, helical gearboxes do not compete with cycloidal gearboxes and strain wave gears - the technical performance data, specific advantages and typical areas of application are too different. Nevertheless, there are some fields of application in which a switch from helical gear units to cycloidal gearboxes could be worthwhile. These include, for example, welding positioners, the printing industry and conveyor systems in packaging technology and the food industry, where stations have to be approached precisely or where intermittent transportation takes place.
We have precision gearboxes for the highest requirements
Helical gear units are not suitable for precision applications due to their higher gear backlash. Cycloidal gears and strain wave gears have a clear advantage here. The precision gearboxes enable maximum precision up to the highest reduction ratios. Cycloidal gears are characterized by minimal backlash over the entire service life (hysteresis loss < 1 arcmin, pure torsional backlash 0.1-0.2 arcmin), strain wave gears are absolutely backlash-free. Your benefits: precisely executed movements and pinpoint positioning.
Another plus: Our precision gearboxes have a large step change of 1:30 or even higher. Even high reduction ratios only require two or three gear stages. With helical gear units, on the other hand, the transmittable torque is limited by the meshing of the teeth: Only very small reduction ratios can be realized in one stage. Several gear stages are therefore required for higher reduction ratios. This leads to a larger number of components in the gearbox and an increased space requirement. The large step change in cycloidal gears and strain wave gears therefore has two advantages: a more compact design and greater safety. The smaller number of gear stages reduces the complexity of the overall system and minimizes the susceptibility to errors.
Compact design saves installation space
The very compact design enables users to build their machines smaller and lighter. This saves installation space and resources. Due to their lower mass moment of inertia, cycloidal gears and strain wave gears can also be accelerated more quickly. Although helical gear units are more cost-effective, this price advantage can be offset by the lower power density, especially with high torques and high reduction ratios.
Incidentally, cycloidal gears also have a helical gear units stage. This is located in front of the eccentric stage and transmits the rotary motion of the drive or servomotor to the eccentric shafts. However, the backlash of thehelical gear units is not significant at this point, as it is reduced by the cycloidal stage.
Discover cycloidal gears Discover strain wave gears
The advantages of our gearboxes
- Low backlash (cycloidal gearbox) or absolutely zero backlash (strain wave gears)
- Maximum precision for all reduction ratios
- Better dynamics
- Lower mass inertia
- Higher power density (torque-to-weight ratio)
- High reduction ratios with compact design
- Higher rigidity with comparable mass inertia
- Lower weight
Helical gear units
Helical gearboxes are very simple in design. Power is transmitted via straight or helical spur gears on parallel shafts, whereby several output shafts are also possible. For higher reduction ratios, several gears and shafts are connected in series. The backlash of the individual stages in the helical gear units adds up, so that the total backlash of the gearbox continues to increase. In addition, the efficiency of the helical gear units decreases with each additional stage. Higher reduction ratios require the use of larger gears. The module (size of a gearwheel) increases and with it the size and weight of the gearbox. The direction of rotation of the output shaft changes with each stage.
Helical gearboxes are characterized by a robust design, high efficiency and high speeds. They are extremely versatile and are one of the most widely used types of gearbox. Applications with high demands on load capacity and robustness in particular benefit from the special features of helical gear units, for example cranes, construction machinery or conveyor systems. They are also used in turbines and propellers. This is where the high speeds come into play. The manual gearbox in cars is also a helical gear units.
