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RokOnNexus
From concept to CAD

Engineering ideas.Designing possibilities.Delivering results.

Mechanical design engineering services and CAD outsourcing from Pune, India. We turn ideas, concepts and engineering requirements into practical, manufacturable products — from concept development and 3D CAD modelling through to detailed manufacturing drawings and production-ready documentation, for clients in India, the USA, UK, Europe and Australia.

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Services
13, from concept to production support
Drawings
Issued in 6 languages on request
Output
STEP · DXF · DWG · PDF · STL

CAD tools

SolidWorks · AutoCAD · Fusion 360 · Creo · CATIA V5 · UG NX · Autodesk Inventor · ZW3D

File formats

STEP · IGES · DXF · DWG · PDF · STL · Native CAD

Drawing languages

English · French · German · Chinese · Norwegian · Gulf Arabic

What we do

Design work that ends in files a shop can use

Thirteen mechanical design and CAD services covering the whole path — concept, 3D CAD modelling, manufacturing drawings, documentation and the engineering support that follows.

All services

Concept and product development

Concept development and product design engineering — from idea to a practical, manufacturable concept.

  • Initial concepts developed from a brief or a sketch
  • Design alternatives explored and compared
  • Solutions weighed on function, performance and manufacturability
  • A clear direction before detailed modelling begins

Mechanical product design

Mechanical product design and product development engineering — complete products designed to work and to be built.

  • Functionality and reliability worked through in the design
  • Manufacturability considered at every decision
  • Cost optimisation without losing performance
  • From a single component to a full product

Machine and equipment design

Machine design services, special purpose machine (SPM) design and jig and fixture design built around your process.

  • Machines, mechanisms, welding, machining, inspection and assembly fixtures, jigs and tooling
  • Designed for specific applications and production rates
  • Guarding, access and maintenance considered
  • Equipment tailored to the line it joins
From sketch to solution

Every stage, with engineering confidence

Concept through production. Join at any point — a single component, a full product, or overflow capacity when your own team is stretched.

  1. Concept

    The idea explored as an engineering problem, with alternatives compared.

  2. Design

    A direction chosen on function, performance and manufacturability.

  3. 3D CAD

    Precise parametric models of components and assemblies.

  4. Engineering drawings

    Dimensions, tolerances, GD&T, materials and bills of materials.

  5. Prototype

    Print-ready files and support through the first build.

  6. Production

    Revisions, manufacturing support and released documentation.

Why work with us

Great engineering is more than a model

It is understanding how a product will function, perform, manufacture, assemble and succeed in the real world.

Precision-driven design

Accurate, detailed, production-ready engineering solutions. The drawing that leaves here is one the shop can build from.

Innovation and problem solving

Creative approaches to challenging mechanical design requirements, rather than the first solution that happens to work.

Manufacturing-focused engineering

Designs developed with real-world manufacturing and assembly in mind, so cost and buildability are settled at the design stage.

Flexible engineering support

From an individual component to complete product development, the engagement adapts to what you actually need.

Selected work

Parts, brackets, enclosures and frames

A sample of recent jobs, with the problem that started them and what was handed over.

Full portfolio
Rotating equipment

8-bolt flanged shaft housing

Problem

A rotating drive shaft needed a sealed housing that bolted to an existing 8-hole pattern nobody wanted to redrill.

What we did

Bore, O-ring groove and boss height were sized around the customer bolt circle and shaft tolerance, then checked for wall thickness and seal squeeze.

Bolt circle
Ø150 × 8 holes
Bore
Ø45 H7
Material
EN 1.0503 / C45
  • 3D model (STEP)
  • Dimensioned drawing with GD&T
  • Printed fit-check prototype
Valves and actuation

ISO 5211 actuator bracket

Problem

An actuator had to sit on an F05 valve top with enough clearance for the drive adapter and no fouling on the stem.

What we did

A machined bracket set the stack height, with the mounting face and drive coupling kept concentric within a tolerance the shop could actually hold.

Interface
ISO 5211 F05
Stack height
86 mm
Concentricity
Ø0.15 A
  • 3D model (STEP)
  • Production drawing
  • Material recommendation: 304 / 316 SS
Power transmission

Spur gear and hub drive

Problem

A discontinued gear had to be replaced with the same centre distance and ratio, from a worn sample.

What we did

Module and tooth count were recovered by measurement, the profile rebuilt parametrically, and the keyway and hub matched to the existing shaft.

Module
3 mm
Teeth
24
Bore / keyway
Ø25 H7 / 8 × 4
  • Parametric model
  • Gear data table on drawing
  • Cutting drawing for the gear shop
Next step

Have a part that needs drawing?

Send a sketch, a photo with dimensions, or an old print. You get a scope, a price and a lead time before any work starts.

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