Robot Mower Cutting-Width Claims in 2026: Why 7.1 in, 24 cm, and 400 mm Are Not a Direct Speed Ranking

But official specs usually pair cutting width with other constraints: battery runtime, charging time, area-capacity assumptions, slope context, and navigation behavior. If you compare width in isolation, you can overestimate how much grass a mower can actually finish in your yard.

Source table (primary sources first)

What official sources are actually saying

1) Navimow i Series publishes cutting width together with area-capacity and runtime context

On the Navimow i Series spec page, Segway lists a 7.1 in cutting width and also publishes additional capacity context, including:

• Area Capacity per Hour: 60–100 ㎡ (0.015–0.025 acre) or 80–120 ㎡ (0.02–0.03 acre), depending on variant
• Full Charge Mowing Time: 60 min or 120 min
• Charging Time: 90 min or 120 min

Practical takeaway: the same cutting-width family still has different throughput outcomes once battery/runtime variant is included.

2) Husqvarna 450X NERA publishes a 24 cm cutting width, plus runtime and charging metrics

Husqvarna’s 450X NERA page lists:

• Cutting width: 24 cm
• Typical mow time on one charge: 145 min
• Typical charging time: 40 min
• Working area capacity (±20): 5,000 m²

Practical takeaway: width is only one input. Husqvarna also frames performance using typical cycle timing and installation-scale assumptions.

3) Mammotion LUBA 2 AWD combines width and per-charge area claims

The Mammotion LUBA 2 AWD page highlights:

• “Maximum 1500㎡/per charge with 400mm dual cutting disc”
• “Automatic Edge Mapping for 5,000㎡”

Practical takeaway: this page presents a larger cutting-disc figure alongside per-charge area and mapped-area framing. Buyers still need to confirm yard complexity and conditions before assuming equivalent real-world throughput.

Why width-only comparisons break

A bigger cutting width can help, but official pages show that output is constrained by more than blade span:

1. Runtime per charge (minutes) can differ substantially.
2. Charging time affects total daily mowing windows.
3. Area-capacity claims can depend on model variant and test context.
4. Mapping/zone complexity and obstacle density can reduce effective throughput.
5. Slope and traction limits can force slower or less efficient pathing.

Side-by-side context from official pages

Quick normalization checklist before purchase

1. Convert all width figures to one unit (cm or inches) before comparing.
2. Pair width with published full-charge mowing time.
3. Pair width with charging time to estimate cycle efficiency over a day.
4. Use manufacturer area-capacity ranges (if provided) instead of width alone.
5. Check whether claims are tied to a specific model variant in the same family.
6. Treat “maximum” area claims as best-case, not guaranteed yard outcomes.
7. Re-check spec wording immediately before purchase because pages can change.

Internal pages for deeper comparison

• Robot profiles: Husqvarna Automower 450X NERA, Segway Navimow i105, Mammotion LUBA 2 AWD 5000
• Manufacturer pages: Husqvarna, Segway Navimow, Mammotion
• Country context: Sweden, China
• Component context: RTK-GNSS Positioning, RGB Camera, Wi‑Fi

Reverification note

This is a time-sensitive comparison. Re-check official model pages right before purchase, especially where “maximum area” and variant-level spec tables are involved.