Mowing Capacity
- 72-Hour Max Mowing Area (Fast Charging): 108,000 m² (26.7 acres)
- 72-Hour Max Mowing Area (Standard Charging): 93,600 m² (23.1 acres)
- Max Mowing Area per Charge: 12,000 m² (3 acres)
- Max Climbing Ability: 20°
- Recommended Working Slope: 15°
- Travel Speed: 0–6 km/h (0–3.7 mph)
Complete Unit
- Weight: 170 kg (375 lb)
- Dimensions: 1345 × 855 × 970 mm (53 × 34 × 38 in.)
- IP Rating: IPX4
- Operating Temperature: 0–45°C
Cutting System
- Cutting Height: 20–120 mm (0.8–4.72 in.)
- Cutting Width: 635 mm (25 in.)
Battery & Charging
- Battery Capacity: 4 kWh
- Max Working Time: 5 hours
- Charging Time (Standard): 5 hours
- Charging Time (Fast Charging): 3 hours
- Battery Rated Voltage: 48V DC
Navigation & Safety
- Positioning: RTK + LiDAR fusion navigation
- Obstacle Detection: 360° LiDAR with front and rear bumpers
- Terrain Handling: Front suspension chassis with floating cutting deck
Note: mowing area figures are theoretical values under standard test conditions — actual efficiency will vary with terrain and grass conditions. Recommended working slope depends on site conditions; on slopes, routes should be planned primarily uphill/downhill, and cross-slope mowing should be avoided or used with caution.
What's In The Box
The FJD RM21 Pro Rough Ranger base unit ships with:
- RM21 Pro Rough Ranger robotic mower base unit
- Mowing kit with flat blade and discharge blade
- Charging station (confirm standard vs. optional inclusion with your Robot Mowers Australia contact)
- Quick-start setup guide
Ball picking, line marking, grass collecting, and dew brushing kits are available as separate interchangeable attachments — ask your Robot Mowers Australia contact which kits suit your site.
Frequently Asked Questions
What makes the Rough Ranger different from a standard robotic mower?
The Rough Ranger is built around a modular kit system. The same base unit can be fitted with a mowing kit, ball picker, line marker, grass collector, or dew brush, so one machine can be redeployed across different tasks instead of buying a separate robot for each job.
How does it handle uneven or rough terrain?
A front suspension chassis keeps the unit stable on uneven ground, and a floating cutting deck follows the contour of the turf for a consistent cut with less scalping.
How does it navigate without going off course?
It uses fused RTK and LiDAR positioning, which keeps navigation reliable even under tree cover or in areas where GPS signal is weaker.
What size sites is it suited to?
It can cover up to 12,000 m² (3 acres) per charge, and up to 108,000 m² (26.7 acres) over a 72-hour cycle in fast-charging mode — suited to golf courses, sports fields, orchards, and other large turf areas.
How long does it take to charge?
Standard charging takes around 5 hours; fast charging reduces this to around 3 hours, for up to 5 hours of working time per charge.
How does it avoid obstacles, players, and equipment?
360° LiDAR works together with front and rear bumpers as part of a multi-layer safety system, allowing it to detect and respond to obstacles during autonomous operation.
Can it manage multiple mowing zones?
Yes. Multiple zones can be planned, managed, and monitored from the app, and smart path planning automatically generates optimised routes to reduce overlap and missed areas.
Does it work with FJD's other site-mapping tools?
Yes. The Rough Ranger connects with FJD's S2 Max scanner, V4e Pro RTK receiver, and GolfMind platform to support a full scan-to-mow turf care workflow.
Manufacturer's Warranty
The FJD RM21 Pro Rough Ranger is backed by a manufacturer's warranty covering defects in materials and workmanship under normal commercial use conditions. Confirm the exact warranty period with your Robot Mowers Australia contact before purchase, as terms can vary by kit and configuration.
To make a warranty claim, contact Robot Mowers Australia with your proof of purchase. Our team will assess the fault and coordinate repair, replacement, or refund in line with the warranty terms.
Australian Consumer Law
In addition to the manufacturer's warranty, this product is covered by the Australian Consumer Law (ACL). Our products come with guarantees that cannot be excluded under the ACL. You are entitled to a replacement or refund for a major failure, and compensation for any other reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure.
Warranty Exclusions
The warranty does not cover damage caused by misuse, neglect, improper installation, use outside of recommended operating conditions, or failure to follow the care and maintenance instructions in the user manual.
For warranty support, contact us at info@robotmowersaustralia.com.au or visit robotmowersaustralia.com.au.
For more information about the warranty of this product, please contact us.
