I will create a robotics bom, torque calculation and motor sizing for your robot


Level 2
About this gig
Building a robot arm, gripper or mechanism? Get a BOM you can order from, and proof your motors can lift it, before you buy anything.
I am a robotics and control engineer (NUST, MS thesis on a 7-DOF arm I designed, built and controlled). I work from your SolidWorks or STEP files, URDF, or a sketch.
What you get:
- Priced BOM in Excel and PDF: purchased parts with pack sizes, unit and line prices, supplier links
- Printed or machined parts list with material and process
- Fastener schedule by joint, with every screw size and length
- Joint torque analysis from your CAD mass properties: required torque, motor utilisation, payload at the tip
- Clear fixes for any joint over its limit, with the cost change
- Design steps and assembly order
Works for servo arms, SCARA, bus-servo arms (FEETECH, Dynamixel), stepper and BLDC joints, grippers and pan-tilt systems.
See the 2 sample PDFs in this gig: a real 6-DOF arm where the torque check caught an overloaded shoulder servo before parts were bought. Check my rest of portfolio for further ideas and information.
Message me before ordering with your files and goal. I reply within an hour.
Delivery style preference
Please inform the freelancer of any preferences or concerns regarding the use of AI tools in the completion and/or delivery of your order.
Get to know Fazal E Haq
Expert in Robotics, Controls, 3D Design and Automation!
Level 2
- FromPakistan
- Member sinceAug 2021
- Avg. response time1 hour
- Last delivery5 days
Languages
English
My Portfolio
Other Industrial & Product Design Services I Offer
FAQ
What files do you need?
SolidWorks parts and assembly, or STEP/IGES. A URDF or a dimensioned sketch also works. If you only have an idea, choose Premium and I’ll lay out the design first.
Which motors can you size?
Hobby servos (MG996R, DS3235), bus servos (FEETECH STS, Dynamixel), steppers, and BLDC or harmonic joint actuators.
How do you calculate torque?
I take the mass and centre of mass of each link from your CAD. Then I calculate the holding torque at every joint in the worst-case pose and compare it with the motor’s stall torque. You also get the payload each joint can carry at the tip.
Which suppliers do you price from?
Amazon, AliExpress, Alibaba or local suppliers. Tell me your country and I’ll price for where you buy.
Can you redesign a joint that fails?
Yes. The report gives the fix and its cost. Redesigning the CAD is a separate order, or a custom offer.
Will I get editable files?
Yes. The BOM and the torque calculator come as Excel files with live formulas, so you can change a mass or a motor and every result updates.

