Custom-built: where the catalogue ends, our engineering begins.
When no catalogue product meets your requirement, we develop from the ground up: design, manufacturing and test rig under one roof in Marchtrenk — together with your team, from specification to commissioning.
- Engineered-to-order
- FEA simulation
- One-off – small series
- Reverse engineering
Some applications fit no catalogue sheet: extreme installation space, unusual loads, missing documentation for a legacy gearbox. A standard gearbox bent into shape then buys the solution with compromises in installation space, service life — or both.
For us, custom-built means no off-the-shelf adaptation but a fully thought-through new design: material, gearing geometry, bearings and lubrication — everything calculated precisely for your task.
The key figures at a glance.
Series reference values — the final design is always based on your load profile.
How the Custom-Built Gearboxes works.
From specification to solution
We start with your requirements, not with an existing housing. The result is a design that solves exactly your one task.
Verified by FEA
Where it gets critical, we verify by finite element simulation — for reliable safety margins instead of costly over-dimensioning.
Supported through to commissioning
Design, manufacturing, assembly, commissioning — with dedicated contacts and full responsibility for the result.
Where our drives work.
For tasks that have never existed in this form — or for which no documentation remains.
- Special machines and prototypes
- Replacement of legacy gearboxes without documentation
- Extreme installation-space or weight constraints
- Unusual load cases and environments
- Test rig and experimental drives
- Drives for research and pilot plants
The knowledge behind the design.
A custom-built gearbox is the right choice when:
- no catalogue product meets the requirement,
- extreme installation-space, weight or environmental constraints apply,
- a legacy gearbox without documentation must be replaced,
- a prototype, test rig or small series is being built.
New design instead of adaptation
We start from the specification, not from an existing housing: material, gearing geometry, bearings and lubrication are calculated entirely for your task.
Verified by FEA
For novel load cases we verify the critical components by finite element simulation — reliable safety margins instead of costly over-dimensioning.
Reverse engineering of legacy equipment
If drawings are missing, we measure the existing gearbox, analyse materials and design a fitting, often improved replica.
FEA simulation
Finite element analysis: computational strength and stiffness analysis of housing, shafts and gearing — for reliable safety margins instead of costly over-dimensioning.
Reverse engineering
Reconstruction of a gearbox without existing documentation: measurement, material analysis and redesign of a fitting — often improved — replacement.
Load spectrum
The time-based distribution of all occurring loads — continuous load, peaks, starting and shock torques. A serious design calculation works with the load spectrum, not with a single nominal rating.
Gearing quality
Manufacturing accuracy of the teeth (e.g. per DIN/ISO quality grades). Higher quality means smoother running, lower wear and better efficiency.
Custom-Built Gearboxes 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.
/ 01From what quantity does a custom build pay off?+
A custom build pays off from a single unit — for example as a replacement for a failed legacy gearbox — as well as for small series of special machines./ 02Can you rebuild a gearbox for which no drawings exist anymore?+
Yes. Through reverse engineering we survey the existing gearbox, reconstruct the geometry and deliver a fitting, often improved replica./ 03Do you also support the project after delivery?+
On request we take over commissioning, condition monitoring, inspection and spare-parts stocking — specifically for your plant.
Exactly one task. Exactly one solution.
Describe your special task — you get an answer within 24 hours, then our engineering team develops the right drive solution with you.