Need Motorized Gear Design and Enclosure

Mechanical Design Engineer Required – Compact Motorized Gear Assembly & Enclosure Design

Project Description:

We are looking for an experienced Mechanical Design Engineer to design a compact mechanical assembly and enclosure that houses a motor-driven gear mechanism along with associated mechanical components.

The scope of work is strictly limited to mechanical design, casing design, and internal assembly layout. The functional application of the device will be disclosed only after NDA, and no domain-specific assumptions are required from the designer.

Key Design Requirements:

Design a compact enclosure (casing) with the following maximum external dimensions:

Maximum Diameter: 100 mm

Maximum Length: 150 mm

The enclosure must internally accommodate:

A small DC motor

A multi-stage gear reduction mechanism

A lead screw or equivalent linear/rotary transmission mechanism

Shafts, bearings, couplings, and mounting features

Provision for torque transmission to an external spindle/shaft

The mechanical system should be designed to deliver low-speed, controlled rotational output with moderate torque, suitable for precision adjustment applications.

Critical Mechanical Expectations:

Compact, coaxial or space-efficient layout preferred

Proper bearing support for rotating and axial loads

Maintainability and assembly-friendly design

Mechanical robustness and smooth operation

Tolerance-aware design suitable for machining or industrial fabrication

Electronics & IoT Provisioning (Important):

Although electronics design is NOT part of this project, the enclosure and internal layout must provide sufficient space and mounting provisions for future integration of:

Control PCB(s)

Motor driver circuitry

Sensors or feedback devices (e.g., encoders, limit switches)

Wiring routes and cable exits

Possible future IoT / communication modules

The electronics area should be mechanically isolated from the primary mechanical drive components wherever practical.

Deliverables:

3D CAD models of:

Enclosure / casing

Internal mechanical components

Full assembly

2D manufacturing drawings with dimensions and tolerances

Exploded assembly view

Basic Bill of Materials (mechanical components only)

Assembly notes / recommendations

(Preferred CAD formats: SolidWorks, Fusion 360, Inventor, or equivalent)

Required Skills & Experience:

Strong experience in mechanical product design

Hands-on experience with:

Gear trains

Lead screws / motion transmission

Compact mechanical assemblies

Experience designing enclosures with internal component stacking

Understanding of manufacturability (CNC / turning / milling / casting)

Ability to work with strict dimensional constraints

Nice to Have (Optional):

Experience designing compact electromechanical products

Familiarity with actuator or drive mechanisms

Experience designing products that later integrate electronics

Confidentiality:

This project requires discretion.
The detailed application and operational context will be shared only after project award and, if required, under NDA.

How to Apply:

Please include:

Relevant past projects (especially compact mechanical or actuator designs)

CAD samples or screenshots (if available)

Your preferred CAD software

Estimated timeline to deliver the first design iteration