Spiral Bevel Gearbox Design
3D CAD design of a right-angle spiral bevel gearbox — splined shafts, deep-groove ball bearings and a cast housing, proven in a full sectional view.
Industry
Gearbox & Power Transmission Design
Spiral bevel, helical, planetary and twin-shaft gearboxes; pump gear drives; two-tonne mill gear and pinion sets; agricultural gearboxes — designed as complete units with shafts, bearings, seals, housings and the sectional general-arrangement drawing a customer signs off on. Eight gearbox and drive projects are in our portfolio.
What This Sector Needs
Drives Designed To Be Built, Not Just Rendered
A gearbox is a system: the gear pair sets the ratio, but the shafts, bearings, seals, housing stiffness and lubrication decide whether it lasts. We design the whole unit — gear macro-geometry and rating, shaft stress and deflection, bearing life, seal selection, housing sections that carry the loads to the feet — and present it in a sectional GA that shows the mesh, the bearing spacing and the wall thickness directly.
Our gearbox work spans cast and fabricated housings, right-angle spiral bevel drives, planetary and epicyclic units, twin-shaft extruder drives and heavy mill gearing, delivered as parametric assemblies so a ratio or centre-distance change propagates through the drawings.
- Gear rating to AGMA / ISO 6336 principles for spur, helical, bevel and planetary sets
- Shaft design with stress, deflection and critical-speed checks; splines and keyways
- Bearing selection and L10 life; seal and lubrication layout
- Cast and fabricated housings with FEA for stiffness and mesh alignment
- Sectional GA, part drawings, BOMs covering bought-out bearings and seals
- Reverse engineering of legacy gearboxes for spares and upgrades
Delivered Work
Projects In Gearboxes & Power Transmission
Real projects from our portfolio. Client names are withheld under NDA; the engineering is ours.
Fabricated Gearbox Housing Design
A gearbox housing designed as a welded fabrication instead of a casting — plate-by-plate detailing with weld preparation and machining allowances.
Twin-Shaft Gearbox for Plastics Processing
Twin-shaft gearbox for plastics processing machinery — two output shafts driven in phase, with thrust loads from extrusion taken into the housing.
Planetary Geared Motor for a Roll-Bending Machine
Inline planetary geared motor designed for a roll-bending machine — stacked reduction stages, flange-mounted motor and a keyed output shaft.
Epicyclic Pump Gear Drive
Vertical epicyclic gear drive for a pump — internal ring gear and planet set inside a ribbed housing, driven from an offset motor mount.
Two-Tonne Gear & Pinion for a Crushing Mill
A two-tonne custom gear and matching pinion for a crushing mill — heavy-section design for continuous high-torque duty in an abrasive environment.
Services For This Sector
How We Support Gearboxes & Power Transmission Teams
Machine & Equipment Design
Complete gearbox and drive design from the duty specification to the manufacturing package.
About this serviceFEA & CFD Simulation
Housing stiffness, shaft deflection and modal checks in Ansys so the mesh stays aligned under load.
About this serviceSheet Metal & Fabrication Drawings
Fabricated housings detailed as weldments with post-weld machining drawings.
About this serviceStandards & Conventions
What We Draw To In This Sector
- AGMA and ISO 6336 gear rating principles; your preferred method stated per project
- ASME Y14.5-2018 (R2024) or ISO GPS tolerancing on shafts, bores and housings
- ISO 2553:2019 / AWS A2.4:2020 weld symbols on fabricated housings
- Bearing manufacturer catalogues for life and fit calculations
Typical Deliverables
What You Receive
- Parametric gearbox assembly in your native CAD with configurations by ratio
- Sectional general-arrangement drawing for sign-off
- Shaft, housing and cover part drawings with GD&T; casting drawings where applicable
- Bill of materials including bearings, seals, fasteners and plugs
- Calculation records for gears, shafts and bearings
Working On Gearboxes & Power Transmission Equipment?
Send the brief, the drawing or the part. An engineer who has done this kind of work will scope it and quote it — usually within one business day, under NDA if you prefer.