Side by side
Denso HM-4060 vs Epson G20-851
Two scara arms a buyer shopping for machine tending would honestly weigh against each other, with the manufacturer-published figures in one table and a plain reading of what the differences mean on a floor. We sell across brands, so we have no reason to tilt it.
| Denso HM-4060 | Epson G20-851 | |
|---|---|---|
| Class | SCARA arm | SCARA arm |
| Payload | 10 kg (22 lb) | 10 kg (22 lb) |
| Reach | 600 mm | 850 mm |
| Sold as collaborative | no | no |
| Applications listed | pick and place, packaging, machine tending | material movement, machine tending, packaging |
| Specs checked | 2026-08-22 | 2026-08-23 |
Every figure is a manufacturer-published claim, checked on the date shown against the maker's own material, and not one of them survives contact with your part, your rate and your floor without an applications review. Prices are deliberately absent: quotes are prepared by our team and confirmed with the manufacturer.
What the numbers mean on the floor
- Payload is effectively a tie at 10 kg and 10 kg. The gripper and the part decide it, not the arm: rated payload is measured at the wrist with no tool on it.
- The Epson G20-851 reaches 250 mm farther than the Denso HM-4060. That matters for pallet height, bin depth and machine door clearance more than it matters at a bench.
- Neither is sold as collaborative. Both need guarding and an integrator's risk assessment before a person shares the floor with them.
- Both are listed for machine tending, packaging. The Denso HM-4060 is also listed for pick and place. The Epson G20-851 is also listed for material movement.
What a spec sheet cannot tell you
The gripper, the fixture and the integrator decide more of the outcome than the arm. Cycle time on your part is a test, not a datasheet figure. Service footprint, spare parts and who answers the phone at 2 AM differ by brand and by state. And the price difference between two arms in the same class is usually smaller than the difference between two integrators' quotes for the same cell. A model number is not a specification, and the gripper is the project.
From our matrix
Denso HM-4060. Cycle published as approx 0.2 s. Denso lists a 20 kg sibling, the HM-4A60.
Epson G20-851. Legacy, superseded by the GX20. RATED 10 kg, max 20 kg. Cycle 0.37 s. IP54 or IP65.
Also on the shortlist for machine tending
- Denso HM-4070, 10 kg
- Denso HM-4085, 10 kg
- Denso HM-40A0, 10 kg
- Epson G20-A01, 10 kg
- Epson GX20-1000, 10 kg
Ask about these two for your job
Free, about two minutes, no phone number. Joe will tell you which belongs on your shortlist, what beats both, and what has to be true for the math to work.