Crown gear units: precise power redirection through 90°.
Crown gear units enable compact 90° power redirection with high running smoothness and high torsional stiffness. They are used as a right-angle stage or as part of multi-stage drivetrains.
- 90° redirection
- spiral toothing
- high running smoothness
- high stiffness
A rough-running right-angle stage makes itself heard first as noise — and later as wear, growing backlash and imprecise positioning across the entire drivetrain.
The overlapping crown gear mesh runs quietly and with little wear — and we design bearings and geometry for high stiffness and minimal backlash.
The key figures at a glance.
Series reference values — the final design is always based on your load profile.
How the Crown Gear Units works.
Spiral toothing
The gearing geometry ensures a smooth tooth mesh and uniform power transmission. This improves running smoothness and service life compared with simpler gearing forms.
Stiff and precise
High torsional stiffness keeps backlash and play small — the basis for exact positioning and smooth synchronous running in your plant.
Conceived as a system
Redirection and ratio from a single source: the crown gear stage turns the corner, downstream planetary or helical stages deliver the ratio.
Where our drives work.
Wherever power has to be guided cleanly around the corner — quiet and stiff.
- Right-angle drives in machinery
- Slewing and rotary drives
- Drives in conveying technology
- Multi-axis drivetrains
- Special plants with installation-space constraints
- Testing and positioning technology
The knowledge behind the design.
A crown gear unit is the right choice when:
- the drive must be redirected by 90°,
- high running smoothness and stiffness are required,
- quiet running counts even at higher speeds,
- the redirection is part of a multi-stage drivetrain.
Spiral toothing for overlapping mesh
Unlike simple bevel gears, the crown gear geometry provides a uniform, overlapping tooth mesh — meaning quiet running and low wear.
Stiffness keeps backlash small
High torsional stiffness reduces backlash and play — important wherever positioning accuracy or synchronous running is required.
Conceived within the drivetrain
We readily combine the crown gear stage for redirection with downstream planetary or helical stages to achieve the desired ratio.
Configuration (coaxial / parallel / right-angle)
The position of input and output relative to each other: coaxial (single axis, planetary), parallel-shaft (helical) or at an angle (bevel/crown gear). It determines installation space, stiffness and integration.
Gearing quality
Manufacturing accuracy of the teeth (e.g. per DIN/ISO quality grades). Higher quality means smoother running, lower wear and better efficiency.
Efficiency η
The share of input power that arrives at the output as usable power. In multi-stage gearboxes, the stage efficiencies multiply — every percentage point counts in continuous operation.
Lubrication & sealing
Lubricant film, viscosity, lubricant selection and sealing concept determine service life and maintenance effort — matched to speed, temperature, mounting position and ambient conditions.
Crown Gear Units by ATP — designed for your real load spectrum, not picked from a catalogue.
What sets us apart from off-the-shelf.
Designed for your load profile
We calculate every gearbox on the actual load spectrum and the real operating conditions of your plant — not merely on a theoretical nominal rating.
Brand-independent service
We maintain, repair and replace gearboxes from all manufacturers — including reverse engineering of legacy equipment and spare parts to original dimensions or with an improved design.
Fast support when it matters most
Downtime does not keep office hours. Our service hotline is staffed around the clock — we assess the situation, agree the next steps with you and dispatch our service technicians right away.
Engineering from Austria
Design, manufacturing and service from a single source in Marchtrenk — since 1995. Short paths, dedicated contacts, full responsibility for the result.
Frequently asked questions.
/ 01How does a crown gear unit differ from a bevel gearbox?+
Both redirect through an angle. The crown gear geometry offers a more uniform, overlapping mesh — resulting in quieter running and often higher stiffness, especially at higher speeds./ 02Can you combine crown gear stages with other gearboxes?+
Yes. We frequently place a crown gear stage at the input for redirection and combine it with planetary or helical stages for the desired ratio./ 03Are crown gear units suitable for high speeds?+
Yes — the spiral toothing runs quietly even at high speeds. The specific design depends on speed, torque and the required running smoothness.
Power cleanly around the corner.
Tell us the redirection angle, torque and speed — we design the right right-angle stage, stand-alone or within the drivetrain.