Across 15 robot arms benchmarked for this analysis, collaborative arms average roughly $3,000–$8,000 per kilogram of rated payload, while traditional industrial arms range from $800–$3,500/kg — a gap driven more by safety certification costs and integrated sensing than raw mechanical hardware.
If you are sourcing a robot arm and want to compare value across wildly different payload classes, cost per payload kilogram ($/kg) is the fastest normalizing metric available. No manufacturer publishes it. This page does the math for you.
What Is Cost Per Payload Kilogram and Why It Matters for Robot Sourcing
Cost per payload kilogram is simply the robot's purchase price divided by its rated payload capacity in kilograms. A $50,000 arm rated for 20 kg costs $2,500/kg. A $30,000 arm rated for 5 kg costs $6,000/kg.
The metric matters because payload ratings are the primary way buyers scope a robot to a task. When you need to move a 6 kg end-effector plus a 2 kg part, you need at least 8 kg of payload. $/kg lets you compare a cobot and an industrial arm on the same axis — not just sticker price — and quickly surface which platform delivers the most lifting capacity per dollar spent.
It is especially useful in early-stage budgeting, RFQ benchmarking, and multi-robot fleet planning where small per-unit differences compound across dozens of cells.
Methodology: How We Calculated $/kg
Price sources: Prices reflect publicly available distributor list prices, manufacturer MSRP where published on official sites, and corroborated RFQ averages from industry procurement forums (e.g., RobotWorx, Automation Direct partner listings, and community threads on ROS Discourse and LinkedIn automation groups). Where a range exists, the midpoint is used for the ranked figure; the range is shown in the table.
Payload specs: Taken directly from each manufacturer's current datasheet as of Q2 2026. Wrist payload and total payload are not conflated — rated payload at full reach is used throughout.
Assumptions:
- Base robot unit only; no end-effector, controller software license, or installation
- USD pricing; non-USD list prices converted at the exchange rate current as of the table date
- Prices exclude VAT/import duties
Last verified: July 2026
The $/kg Comparison Table: 15 Robot Arms Ranked Cheapest to Most Expensive Per Kilogram of Payload
| Rank | Robot Arm | Category | Rated Payload | Est. Price Range (USD) | $/kg (midpoint) |
|---|---|---|---|---|---|
| 1 | FANUC M-710iC/50 | Industrial | 50 kg | $60,000–$75,000 | ~$1,350/kg |
| 2 | KUKA KR 120 R2700 | Industrial | 120 kg | $80,000–$110,000 | ~$792/kg* |
| 3 | ABB IRB 6700-155 | Industrial | 155 kg | $100,000–$130,000 | ~$742/kg* |
| 4 | FANUC R-2000iC/165F | Industrial | 165 kg | $90,000–$120,000 | ~$636/kg* |
| 5 | KUKA KR 6 R900 | Industrial | 6 kg | $25,000–$35,000 | ~$5,000/kg |
| 6 | FANUC LR Mate 200iD | Industrial (compact) | 7 kg | $28,000–$38,000 | ~$4,714/kg |
| 7 | ABB IRB 1200-7/0.7 | Industrial (compact) | 7 kg | $22,000–$30,000 | ~$3,714/kg |
| 8 | Yaskawa GP8 | Industrial (compact) | 8 kg | $24,000–$32,000 | ~$3,500/kg |
| 9 | Universal Robots UR10e | Cobot | 10 kg | $45,000–$55,000 | ~$5,000/kg |
| 10 | Universal Robots UR20 | Cobot | 20 kg | $58,000–$68,000 | ~$3,150/kg |
| 11 | Techman TM12 | Cobot | 12 kg | $38,000–$48,000 | ~$3,583/kg |
| 12 | Doosan A0912 | Cobot | 12 kg | $40,000–$50,000 | ~$3,750/kg |
| 13 | Fanuc CRX-10iA | Cobot | 10 kg | $42,000–$52,000 | ~$4,700/kg |
| 14 | ABB GoFa CRB 15000 | Cobot | 5 kg | $35,000–$45,000 | ~$8,000/kg |
| 15 | Kassow Robots KR1205 | Cobot (7-axis) | 12 kg | $48,000–$58,000 | ~$4,417/kg |
*Heavy industrial arms at high payload achieve the lowest $/kg figures by a wide margin, but require caged cells and specialized integration.
Notable data points:
- FANUC LR Mate 200iD / 7 kg: At roughly $33,000 street midpoint ÷ 7 kg = ~$4,714/kg. A workhorse compact arm with wide integrator support.
- UR10e / 10 kg: At roughly $50,000 street midpoint ÷ 10 kg = ~$5,000/kg. Premium reflects ISO/TS 15066 cobot certification and integrated force-torque sensing.
- KUKA KR 6 R900 / 6 kg: At roughly $30,000 midpoint ÷ 6 kg = ~$5,000/kg. Positioned as a precision small-parts arm; $/kg reflects its niche accuracy spec rather than payload efficiency.
Cobot vs. Industrial Arm: How $/kg Differs by Category and Why
Heavy industrial arms (50 kg+) routinely achieve $/kg figures below $2,000 because payload scales faster than cost in large-frame robot design — the structural steel and servo torque needed to lift 150 kg does not cost 150× more than lifting 6 kg.
Cobots carry a structural $/kg premium for three reasons:
- Safety certification: ISO/TS 15066 power-and-force-limiting compliance requires integrated torque sensing at every joint, adding hardware and validation cost.
- Integrated sensing and software: Most cobots bundle force-torque sensing, vision-ready I/O, and no-code programming environments that inflate unit price.
- Small payload class: Most cobots are rated 5–20 kg, a range where the cost floor is high relative to payload ceiling.
The practical implication: if your application genuinely requires collaborative operation (humans sharing workspace without guarding), the $/kg premium is unavoidable. If you are simply attracted to cobots for ease of programming, some compact industrial arms now offer comparable teach-pendant UX at a lower $/kg.
When $/kg Is the Wrong Metric: TCO Factors That Change the Real Cost Picture
$/kg is a procurement shortcut, not a total cost of ownership (TCO) model. It breaks down in several scenarios:
- Reach matters more than payload. A 7 kg arm with 1,300 mm reach serves a different cell layout than a 7 kg arm with 700 mm reach. Same $/kg, very different utility.
- Duty cycle and speed. An arm rated for 10 kg at 100% duty cycle at high TCP speed is worth more than one rated 10 kg at reduced speed or intermittent cycle.
- Integration cost. A cobot that deploys in two days with no guarding may have lower total project cost than a cheaper-per-kg industrial arm requiring $40,000 in safety fencing and PLC integration.
- Consumables and service contracts. Grease intervals, joint replacement cycles, and regional service availability vary significantly and can dwarf unit price differences over a five-year horizon.
- End-of-arm tooling compatibility. A robot with a proprietary tool-changer ecosystem may lock you into higher tooling costs that offset a favorable $/kg figure.
Use $/kg to shortlist. Use TCO modeling to decide.
How to Use This Data in Your RFQ or Budget Model
Step 1 — Define your payload envelope. Add your heaviest end-effector weight to your heaviest part weight, then add a 20% safety margin. This is your minimum rated payload.
Step 2 — Filter the table by payload class. Eliminate any arm below your minimum. Among those remaining, sort by $/kg to identify the most payload-efficient options.
Step 3 — Apply category filters. If your cell requires collaborative operation, filter to cobots. If guarding is acceptable, open the field to compact industrial arms, which typically offer better $/kg in the 6–20 kg range.
Step 4 — Request distributor quotes for your shortlist. Use the price ranges in this table as a sanity check against quotes. Significant deviation (>20% above range) warrants explanation from the distributor.
Step 5 — Build a five-year TCO model. Add integration labor, tooling, maintenance contracts, and downtime risk estimates before making a final selection. $/kg gets you to a shortlist of three to five arms; TCO picks the winner.
Frequently asked questions
Which robot arm has the lowest cost per kilogram of payload?
Among the 15 arms benchmarked here, large-frame industrial robots such as the ABB IRB 6700-155 and FANUC R-2000iC/165F achieve the lowest $/kg figures — often below $800/kg at their rated payload — because payload capacity scales faster than manufacturing cost at high tonnage. Among compact and collaborative arms, the UR20 (20 kg cobot) offers one of the better $/kg ratios in its category at roughly $3,150/kg.
How do you calculate cost per payload kilogram for a robot arm?
Divide the robot's purchase price (base unit, excluding tooling and integration) by its rated payload in kilograms. For example, a robot priced at $50,000 with a 10 kg payload rating equals $5,000/kg. Always use the manufacturer's rated payload at full reach, not the wrist or reduced-reach figure, for a consistent comparison.
Is a higher payload robot always cheaper per kilogram than a lower payload model?
Generally yes within the same product family or category — larger frames achieve better payload-to-cost ratios. However, this does not hold across categories: a 150 kg industrial arm will have a far lower $/kg than a 10 kg cobot, but the cobot may have a lower total project cost once you factor in the absence of safety guarding, faster deployment, and simpler programming. $/kg is a unit-price metric, not a project-cost metric.
Are the prices in this table list price or street price?
Prices reflect a blend of manufacturer MSRP where publicly published and corroborated distributor street prices from public RFQ forums and integrator listings, current as of July 2026. Actual quotes will vary by region, volume, and negotiation. Use the ranges as a benchmarking reference, not a binding price guarantee, and always obtain a formal quote from an authorized distributor.