Bosch REVOLVE4000 Dual-Slope Rotary Laser — Professional-Grade Grading Control in One Complete Kit
The Bosch GRL4000-80CHVK REVOLVE4000 is a professional connected self-leveling dual-slope rotary laser system built for contractors who need precise, reliable grade control on demanding job sites. Running on Bosch's 18V CORE18V platform, this laser eliminates the need for a power cord or disposable batteries, giving crews the freedom to deploy quickly across open terrain. Whether you're grading a slab, pitching a drainage swale, or establishing consistent elevations across a large site, the REVOLVE4000 delivers the accuracy and range to get the job done right — right out of the case.
System Overview & Jobsite Applications
Engineered for civil grading, concrete flatwork, site prep, and landscape drainage work, the GRL4000-80CHVK operates with ±1/16 in. accuracy at 100 ft. and a working range of up to 2,000 ft. in diameter when paired with the included LR40 receiver. The dual X/Y slope capability allows users to simultaneously set grade in two planes, a critical function for parking lots, athletic fields, agricultural grading, and ADA-compliant walkway construction. Bluetooth connectivity enables remote operation and grade adjustments directly from a smartphone or the included RC5 remote, keeping operators productive without walking back to the instrument.
Key Specifications
- Model: GRL4000-80CHVK
- Accuracy: ±1/16 in. at 100 ft.
- Working Range: Up to 2,000 ft. diameter (with receiver)
- Slope Range: ±10% on both X and Y axes simultaneously
- Rotation Speed: 150, 300, 600 RPM selectable
- Self-Leveling Range: ±5°
- Power Source: Bosch 18V CORE18V battery (GBA18V40 included)
- Battery Runtime: Up to 25 hours per charge
- IP Rating: IP54 — dust and splash resistant
- Operating Temperature: -13°F to 131°F (-25°C to 55°C)
- Connectivity: Bluetooth for remote control via RC5 and smartphone app
What's in the Kit
- GRL4000-80CH Rotary Laser: The core dual-slope, connected rotary laser unit
- LR40 Laser Receiver: Long-range receiver with intuitive LED indicators for grade detection
- RC5 Remote Control: Wireless remote for laser adjustments from up to 300 ft. away
- GBA18V40 18V 4.0 Ah CORE18V Battery: High-capacity lithium-ion battery compatible with all Bosch 18V tools
- GAL1880CV Charger: Fast charger with cooling fan for extended battery life
- BT300HD Heavy-Duty Tripod: Sturdy aluminum tripod rated for professional jobsite use
- GR500 Telescoping Grade Rod: Graduated measurement rod for elevation and grade verification
- Carrying Case: Rugged molded case for organized transport and storage
Job Applications
Concrete Flatwork & Slab Grading: Set precise X and Y slopes simultaneously to meet structural drainage and ADA compliance specs across large pours without re-establishing grade between lifts.
Site Preparation & Earthwork: Use the 2,000 ft. working diameter to control cut-and-fill operations across open excavation sites, eliminating the need for multiple instrument setups on large-scale commercial projects.
Landscape & Drainage Work: Dial in swales, retention pond berms, and lawn drainage grades with repeatable accuracy — the RC5 remote lets a single operator adjust slope without leaving the machine.
Utility & Pipeline Trenching: Establish consistent pipe fall grades along extended trench runs, using the receiver's on-grade detection to guide equipment operators in real time.
Compatible Accessories
- Bosch GBA18V80 18V 8.0 Ah CORE18V Battery — Extended runtime for full-day operation
- Bosch GAL18V-160C Dual-Bay Turbo Charger — Charge two batteries simultaneously on-site
- Bosch BT150 Aluminum Tripod — Lighter-duty tripod option for portable setups
- Bosch LR40 Laser Receiver (Replacement) — Spare receiver for multi-crew deployments
- Bosch RC5 Remote Control (Replacement) — Backup remote for high-use jobsites
Related Guides
- How to Set Dual Slope Grade with the Bosch REVOLVE4000
- Bosch 18V CORE18V Battery Compatibility Guide
- Rotary Laser vs. Grade Laser: Which Do You Need?
- How to Use a Laser Receiver on a Grade Rod
Frequently Asked Questions
- Can the GRL4000-80CHVK set grade on two axes at the same time?
- Yes. The REVOLVE4000 supports simultaneous dual-slope operation on both the X and Y axes, each adjustable up to ±10%. This makes it ideal for parking lot drainage, athletic fields, and any application requiring a true compound slope without resetting the instrument between planes.
- Is the GRL4000-80CHVK compatible with all Bosch 18V CORE18V batteries?
- Yes. The laser runs on the Bosch 18V CORE18V platform, meaning it shares batteries with Bosch 18V drills, saws, and other cordless tools. The included GBA18V40 4.0 Ah battery provides up to 25 hours of runtime, and higher-capacity packs like the 8.0 Ah GBA18V80 are compatible for extended use.
- What is the maximum working range of the REVOLVE4000 with the receiver?
- When used with the included LR40 laser receiver, the GRL4000-80CHVK has a working range of up to 2,000 ft. in diameter (1,000 ft. radius). Without a receiver, the visible beam range is reduced and depends on ambient light conditions. For outdoor daylight use, a receiver is strongly recommended.
- Does this laser require a smartphone to operate, or can it be used without Bluetooth?
- The GRL4000-80CHVK can be fully operated manually without a smartphone or Bluetooth connection. All primary functions — including leveling, slope setting, and rotation speed — are accessible directly on the unit. Bluetooth connectivity and the Bosch Leveling Remote App add optional convenience for remote adjustments, but are not required for standard operation.
