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Product Summary
The Le Lematec LE-G804 is a 4" (100mm) pneumatic angle grinder. Uses standard 4" grinding, cutting, and flap discs with 5/8"-11 arbor. Air inlet: 1/4" NPT at 90 PSI. Requires 6+ CFM. Includes safety guard, side handle, and throttle lock. Spark-free air motor. Cool running with no thermal shutdowns. OSHA-compliant safety features. Used in auto body, fabrication, shipyards, and industrial maintenance. Manufactured by Le Lematec. Price: $105.56. Ships factory direct.
Best for: Professional mechanics, industrial workers, and serious DIY enthusiasts.
LE LEMATEC LE-G804 Air Angle Grinder
The LE-G804 is a reliable and compact air angle grinder designed for professionals and DIY enthusiasts. With its high 10,000 RPM speed, durable steel gears, and lightweight build, this grinder delivers both precision and power for grinding, cutting, and finishing tasks in tight spaces.
Key Specifications
- Cutting Wheel: 4"
- Spindle Thread: 3/8"-24, M10*1.5
- Weight: 3.1 lbs (1.4 kg)
- Length: 8.2 in (210 mm)
- Rotation Speed: 10,000 RPM
- Air Inlet: 1/4 in
- Hose Size: 3/8 in (10 mm)
- Average Air Consumption: 3.5 CFM
Features & Benefits
- Compact design allows grinding in confined areas
- Safety trigger prevents accidental start-up
- Precision-machined steel gears ensure durability and long tool life
Perfect For
This air angle grinder is a must-have tool for:
- Automotive mechanics working on body panels, frames, or exhaust systems
- Technicians and metalworkers needing precise grinding and cutting
- Carpenters shaping and smoothing wood and composite materials
- DIY hobbyists tackling workshop projects
Why Professionals Choose This Tool
- Compact 4" Air Angle Grinder: Professional-grade pneumatic grinding power in a lightweight, vibration-dampened package
- High Power-to-Weight Ratio: Air motor delivers more cutting and grinding force per ounce than equivalent electric angle grinders
- No Spark Ignition Risk: Zero electrical sparks from the motor — OSHA-compliant for use near flammable materials, fuel systems, and in hazardous locations
- Cool Running: Air motor stays cool during continuous use — no thermal shutdowns, no burned-out windings, no overheating in hot shops
- Industrial Safety Features: Includes guard, side handle, and throttle lock lever for OSHA-compliant safe operation
What's in the Box
- LE-G804 4" air angle grinder
- Spanner wrench
- Safety guard
- Side handle
- Air inlet fitting (1/4" NPT)
- User manual
Compatible With
| Discs | 4" (100mm) grinding discs, cutting discs, flap discs, wire wheels, sanding discs — standard 5/8"-11 arbor |
| Air Compressors | 6+ CFM at 90 PSI, 30+ gallon tank |
| Materials | Steel, stainless steel, aluminum, cast iron, masonry, tile, stone, concrete |
Ideal Applications: metal grinding, cutting steel, weld grinding, surface prep, rust removal, fabrication, auto body, industrial maintenance, construction
Frequently Asked Questions
What air compressor do I need for the LE-G804 Air Angle Grinder 4"?
This tool requires approximately 4-6 CFM at 90 PSI. A compressor with at least a 20-gallon tank provides sufficient air volume for intermittent use. For continuous operation, a 30+ gallon tank is recommended.
Is the LE-G804 Air Angle Grinder 4" compatible with my existing air setup?
Yes. Like all Le Lematec tools, it uses a standard 1/4" NPT air inlet fitting that's compatible with most compressors, hoses, and quick-connect couplers from any manufacturer.
Why choose an air angle grinder over electric?
Air angle grinders are lighter (no motor windings or battery), produce zero electrical sparks (safe near fuel and paint), run cooler during continuous use (no thermal cutoff), and last 3-5x longer in industrial environments. They are the standard choice in auto body shops, refineries, shipyards, and food processing plants where safety and durability matter most.
What size compressor do I need for a 4" air angle grinder?
The LE-G804 requires 6+ CFM at 90 PSI for full performance. A 30-gallon compressor with at least 6.5 CFM output handles intermittent grinding. For continuous cutting or grinding, a 60-gallon or two-stage compressor (8+ CFM) provides uninterrupted power without pressure drops.
What discs can I use on the LE-G804?
Any standard 4" (100mm) disc with a 5/8"-11 arbor: grinding discs for stock removal, cutting discs for metal cutting, flap discs for blending and finishing, wire wheels for cleaning and derusting, sanding discs for surface prep, and polishing pads for metal finishing. Use only discs rated for the tool RPM or higher.
How It Compares
The LE-G804 matches the cutting and grinding capabilities of electric 4" grinders at roughly half the weight, making it easier to work overhead and in tight positions. Compared to air die grinders, the 4" disc provides much faster stock removal on flat surfaces. Compared to the LE-G748 3" cut-off tool, the G804's larger disc diameter handles thicker material and wider cuts while the G748 offers more precision for thin sheet metal and tubing.
Shipping Information
- Most USA-based orders are shipped directly from our warehouses within 24 hours for your convenience and maximum efficiency.
- Your product should arrive within 3 - 7 Business Days.
Product Return/Refund and Exchange Policies
At Pro Air Tools, we ensure that we are providing the best quality products from the most trusted hand tool brand. Thus, we stand behind all of our products and quality control 100%.
In the event that the products you ordered from us did not meet your expectations, we will gladly offer you our 30 Months Satisfaction Guarantee Request, no questions asked and no restocking fee!
If within 30 Months from your purchase, you are not fully satisfied with any of the products, you may request any of the following:
- Product Replacement
- Exchange the product with another product of the same value.
- Refund the amount you paid.
Proof of purchase from Pro Air Tools is required for all return, refund, and exchange requests. We also require anyone who wishes to return a product, or request a refund, to fill out our Return/Refund Form. We will notify you via email or phone once we process your return/refund request. Refunds will be credited to the original payment method.
With regards to product exchanges, please note that we only accept this type of request if the product delivered to you is defective or damaged. If a customer opts to request a product exchange with “change of mind” as the reason, the product must be returned in its original packaging. The product should not be used or installed in any manner. All return shipping costs will be shouldered by the customer. Return unused product to our office address at 103 Edwin Pl. Asheville, N.C. 28801.
If you have any question regarding our return/refund and exchange policy that was not answered here, feel free to reach out to us via:
Email at info@proairtools.com
A phone call at +1 828 398 0334
PO Box 8367
725 MERRIMON AVE
ASHEVILLE, NC 28804-2447
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