When you're shopping for industrial robotics cobots, the biggest decision isn't just which arm to buy-it's whether you need a learning platform or a production workhorse. The ARM-21N4 5-DOF Robot Arm Kit sells for $119.23, while the IAI CORP IX-NNN6020-5L-T1 Robot with Hover-Davis QF01-16 Tape Feeder is priced at $10,000. That's a price spread of about $9,880.77, and it separates two very different machines.
Quick Verdict
If you want to understand 5-DOF arm mechanics, assemble a kit, and experiment with grippers, the ARM-21N4 is the clear choice. If you need a used SCARA system designed for automated pick-and-place in a cleanroom-compatible environment, the IAI Corp system is the one.
Comparison Table
| Product | Listed Price | What You Get | Price Bar |
|---|---|---|---|
| ARM-21N4 5-DOF Robot Arm Kit | $119.23 | Unassembled arm kit with digital servos, metal gears, double-bearing joints | |
| IAI CORP IX-NNN6020-5L-T1 w/ Hover-Davis QF01-16 | $10,000.00 | Used SCARA pick-and-place robot with tape feeder, controller integration, table/inline mount |
Where Each Product Wins
The ARM-21N4 wins on price and hands-on access. You can mount suction cups, electromagnets, forks, claws, or grippers to the gripper holder, and every movable joint is connected by bearings. The unassembled format gives you the chance to learn the structure.
The IAI Corp wins on production capability. It's a SCARA pick-and-place robot paired with a Hover-Davis tape feeder, designed for precision placement in industrial settings. It's a used system, so you're getting a more complex machine with controller integration and cleanroom compatibility.
ARM-21N4 5-DOF Robot Arm Kit
The ARM-21N4 is a 5-DOF mechanical arm kit that puts the build process in your hands. For $119.23, you get an unassembled arm with all movable joints connected by bearings, plus digital servos with metal gears and double-bearing output transmission. The gripper holder is designed to fit suction cups, electromagnets, forks, claws, and grippers, so you can adapt the end effector to your own experiments. The upper, middle, and forearm lengths are specified at 121mm, 111mm, and 61mm, giving you a compact arm to work with. Choose this if you want a low-cost way to explore robot arm kinematics and custom tooling. The limitation is that it's a kit: you'll need to assemble it yourself, and it isn't a production-ready cell. If you need a robot for immediate shop-floor duty, this isn't it.
IAI CORP IX-NNN6020-5L-T1 with Hover-Davis QF01-16 Tape Feeder
The IAI Corp system takes the opposite approach. This used SCARA robot is paired with a Hover-Davis QF01-16 tape feeder, making it a matched pick-and-place setup for industrial environments. The listing highlights precision placement, cleanroom compatibility, and controller integration, and the unit can be table or inline mounted. Its dimensions are listed as 58x50x85, so you'll want a planned footprint before it arrives. Choose this if you need a production-capable robot with tape feeding already integrated. The limitation is the $10,000 price and the used condition: you're buying a pre-owned industrial unit with more complexity than a hobby kit, so it's best suited for a facility that already has experience with automated equipment.
Final Choice by Use Case
- For education, bench-top prototyping, or a first robotics project: ARM-21N4 5-DOF Robot Arm Kit.
- For production pick-and-place with tape feeding, cleanroom compatibility, and controller integration: IAI CORP IX-NNN6020-5L-T1 with Hover-Davis QF01-16 Tape Feeder.
