Robotics manufacturing parts at YiguProto
Custom parts for the Robotics sector

Industry

Robotics Manufacturing — Custom Parts from China

Robots live on precise, lightweight moving parts that must fit the first time. We make custom components for robot joints, end effectors, chassis, and controls — from a single prototype to full production runs.

CNC machining, 3D printing, injection molding, and sheet metal — four proven processes from one factory-direct supplier, with in-house engineering and DFM support.

How we help

Why Robotics Teams Choose YiguProto

Precision That Fits First Time

Robot parts are assemblies of many parts. A hundredth of a millimetre matters at every joint. We hold tight tolerances and repeat them across every batch.

Lightweight by Design

Every gram on a robot arm costs payload and battery life. We help you pick thin-wall aluminum, engineering plastics, and optimized shapes that cut weight without losing strength.

Engineering & DFM Support

Our engineers review your files before production. You get practical feedback on wall thickness, draft angles, bearing fits, and tolerances — at no extra cost.

One Supplier, Four Processes

CNC machining, 3D printing, injection molding, and sheet metal under one roof. Fewer vendors to manage, fewer gaps between prototype and production.

Speed That Protects Launches

Most quotes come back within 24 business hours. Prototypes in days — so your next engineering iteration starts this week, not next month.

Your Designs Stay Yours

All files and ideas are treated as confidential. We sign NDAs whenever you need one — before you send a single drawing.

Solutions

Four Ways We Build Robot Parts

Not sure which process fits your part? Start here. Each card shows what the process does best and the robot components we make with it.

CNC Machining

Parts cut from solid metal or plastic. Best when a joint, shaft, or bearing seat must stay accurate under load — batch after batch. No tooling needed for prototypes.

Typical parts:

  • Joint housings and bearing housings
  • Shafts, couplings, and precision gears
  • Sensor and camera mounts
  • Encoder plates and locating pins
See CNC details →

3D Printing

Parts built layer by layer from your CAD file. The fastest way to test a joint design, check an assembly, or print a gripper — no molds, no cutting tools.

Typical uses:

  • Gripper fingers and end-effector prototypes
  • Form-and-fit models for joint housings
  • Assembly jigs and check fixtures
  • Low-volume and customized parts
See 3D printing details →

Injection Molding

Plastic parts made in volume. Melted resin is injected into a steel mold, cooled, and ejected — every part identical, at a low unit cost.

Typical parts:

  • Robot covers and cosmetic housings
  • Cable chain links and cable clips
  • Lightweight gripper fingers in nylon
  • Connector bodies and cable strain reliefs
See molding details →

Sheet Metal Fabrication

Flat metal cut, bent, and welded into parts. The go-to choice for chassis, frames, and control cabinets that must be strong, thin, and light.

Typical parts:

  • Robot chassis and arm frames
  • Control cabinets and mounting plates
  • Cable trays and wiring channels
  • Brackets, gussets, and hardware mounts
See sheet metal details →
Machined robot joint, shaft and bearing seat

Solution 01

CNC Machining for Robotics

CNC machining cuts a part out of a solid block of metal or plastic. A computer-controlled tool removes everything that is not the part. What stays is strong, precise, and repeatable.

This is our first choice for the moving and load-bearing parts of a robot. Joints, shafts, and bearing seats must stay accurate under load — that is exactly what machining does best.

What we machine for robots

  • Joint housings, motor housings, and bearing housings
  • Shafts, couplings, and precision gears
  • Arm links, end-effector mounts, and tool plates
  • Sensor, camera, and LiDAR mounts
  • Encoder plates, locating pins, and spacers

Common materials

Aluminum 6061 / 7075Stainless steel 303 / 304 / 316Alloy steel 4140POMPEEK

No mold is needed. You send a drawing, we cut metal, and you have a real part in your hand — usually within days. That makes CNC the fastest path from CAD to a working robot joint.

Injection molded robot cover and gripper fingers

Solution 02

Injection Molding for Robotics

Injection molding makes plastic parts in volume. Plastic pellets are melted and injected into a steel mold. The part cools, hardens, and pops out — identical every time.

Once the mold exists, each part costs little and comes out fast. If your robot design is settled and the order is in the thousands, this is the most economical way to make covers, housings, and grips.

What we mold for robots

  • Robot covers and cosmetic housings
  • Cable chain links, clips, and strain reliefs
  • Lightweight gripper fingers in nylon
  • Connector bodies and switch buttons
  • Soft-touch pads with TPE overmolding

Common materials

ABSPCPA6 / PA66POMTPE (soft touch)

We make the molds in-house and use hot runner and valve gate systems for clean parts. Nylon is a favourite for gripper fingers — it is light, tough, and slides against itself without grease. 2K and insert molding are available when a part needs two colors or metal threads.

Fabricated robot chassis and control cabinet

Solution 03

Sheet Metal Fabrication for Robotics

Sheet metal fabrication cuts, bends, and welds flat metal into a finished part. No molds are needed, so it works well for prototypes and for parts that change often.

It is the natural choice for the structure of a robot — the chassis, frames, and cabinets that hold everything else in place.

What we fabricate for robots

  • Robot chassis and arm frames
  • Control cabinets and mounting plates
  • Cable trays and wiring channels
  • Brackets, gussets, and hardware mounts
  • Enclosures and dust covers

Processes & finishes

Laser cuttingCNC bendingPunchingTIG / MIG weldingPowder coatingAnodizing

Aluminum keeps the frame light and easy to move. Steel adds stiffness where loads are high. We weld, deburr, and finish every part so it is safe to handle and ready to assemble.

3D printed gripper prototype built layer by layer

Solution 04

3D Printing & Rapid Prototyping for Robotics

3D printing builds a part layer by layer, straight from your CAD file. There are no molds and no cutting tools — just the file and the printer.

Robot teams iterate faster than anyone. Print today, test the joint tonight, change the design tomorrow. That is why 3D printing is the default first step for almost every robot project.

What we print for robots

  • Gripper fingers and end-effector prototypes
  • Form-and-fit models for joint housings
  • Assembly jigs and check fixtures
  • Custom cable chain links and spacers
  • Low-volume and one-off parts

Processes we run

FDMSLASLS (nylon)MJFSLM (metal)

Nylon (SLS) prints gripper fingers that flex and survive thousands of grips. Metal printing makes load-bearing joint prototypes from real stainless or tool steel. Test first, then commit to production tooling.

Compare

Which Process Should You Choose?

Use this quick guide to match your robot part to the right process. Not sure? Send us your drawing — we will recommend the best option for your quantity and budget.

ProcessTypical materialsExample robot partsBest fit for
CNC MachiningAluminum 6061 / 7075, stainless steel 303 / 304 / 316, alloy steel 4140, POMJoint housings, shafts, gears, bearing seats, sensor mountsTight tolerances, structural joints, prototypes & production
Injection MoldingABS, PC, PA6 / PA66, POM, TPECovers, housings, gripper fingers, cable chain linksHigh-volume plastic parts, lowest unit cost
Sheet Metal FabricationAluminum, stainless steel 304 / 316, cold-rolled steelChassis, frames, control cabinets, cable trays, bracketsStructure and enclosures, prototypes & production
3D PrintingABS / ASA (FDM), resin (SLA), nylon (SLS), stainless & tool steel (SLM)Grippers, joint prototypes, jigs, fixtures, custom linksFast iteration, fit checks, low volumes

How it works

From Prototype to Production in Four Steps

Send your files

Email your CAD files (STEP, IGES, STL) and tell us the quantity and your deadline.

Quote & DFM feedback

We reply within 24 business hours with a clear quote and practical design feedback.

Prototype & approval

We make the parts and share an inspection report. You validate the fit on your robot.

Production & delivery

We run the parts, inspect every batch, and ship to your door on the agreed date.

Built on trust

What You Can Expect From Us

24h
Typical quote turnaround on business days
4
Manufacturing processes in one plant
1
Accountable supplier from prototype to production
100%
Customer files kept confidential under NDA

FAQ

Robotics Manufacturing — Frequently Asked Questions

Email your CAD files or drawings. Most quotes come back within a few hours on business days — never more than 24 hours. You will get one clear price, including finishing options.
Yes. All customer files and ideas are treated as confidential. We sign NDAs whenever you need one — before you send a single drawing.
Yes. Our engineers review your design and suggest changes that cut cost, improve quality, or speed up delivery. Typical feedback covers wall thickness, draft angles, bearing fits, and tolerances. This review is free.
For robotics parts, we support one-off prototypes and full production runs. There is no strict MOQ. Many teams start with 5–20 parts for fit testing and grow the order later.
We can make samples for your approval. The cost depends on the process, and it is credited back when you place a production order. Sample lead time is usually a few days for CNC and 3D printing.
CNC machined, 3D printed, injection molded, and sheet metal parts — from prototypes to production. Common examples include joint housings, shafts, gears, bearing seats, sensor mounts, gripper fingers, chassis, frames, and control cabinets.
We follow strict inspection and documentation processes, and we support the certifications your industry needs — including ISO 9001 quality management and material test reports on request. Every batch ships with an inspection report.
Aluminum 6061 and 7075 are the usual first choice for frames and joints — they are light, stiff, and machine cleanly. For plastic parts, ABS and PC make tough covers, while POM and nylon (PA) are best for moving, low-friction parts like gripper fingers and bushings.
Yes. Most of our robotics customers start with 3D printing or CNC prototypes. When the design is final, we move the same part to injection molding or sheet metal at volume — same supplier, same quality records, no re-start.

Start your Robotics manufacturing project

Send us your CAD files. You get free DFM feedback and a factory-direct quote within 24 business hours — plus a clear path from prototype to volume production.

Start My ProjectEmail Us: sales@yiguproto.com