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Product Summary
The Le Lematec LE-BS-708B is a heavy-duty pneumatic belt sander using 3/4" x 20-1/2" (20mm x 520mm) sanding belts. Air inlet: 1/4" NPT. Requires 5-6 CFM at 90 PSI. Extended belt life due to larger surface area. Industrial construction with heavy-duty bearings. Used for weld seam blending, industrial metal finishing, and stainless steel polishing. Manufactured by Le Lematec. Ships factory direct.
Best for: Professional mechanics, industrial workers, and serious DIY enthusiasts.
LE LEMATEC LE-BS-708B Belt Sander (3/4" x 20-1/2")
The LE-BS-708B is a powerful air belt sander engineered for fast material removal on larger flat surfaces and weld seams. Built for mechanics, technicians, carpenters, and DIY enthusiasts, this tool delivers high rotation speed and lightweight handling for effortless grinding, sanding, and finishing tasks.
Key Specifications
- Belt Size: 3/4" x 20-1/2" (20 mm x 520 mm)
- Rotation Speed: 18,000 RPM
- Weight: 2.12 lbs (0.96 kg)
- Length: 15.6 in. (396 mm)
- Vibration: 1.7846 m/s²
- Air Inlet: 1/4 in.
- Hose Size: 3/8 in. (10 mm)
- Average Air Consumption: 3.5 CFM
Why Choose This Belt Sander?
With a durable design and lightweight build, the LE-BS-708B allows for comfortable extended use without compromising on power. Its 18,000 RPM speed ensures quick material removal, while its compact belt size is ideal for hard-to-reach areas.
Perfect For
This pneumatic belt sander is perfect for:
- Automotive mechanics working on rust, welds, and body panels
- Woodworkers and carpenters requiring fine finishing
- Technicians in need of a compact sanding solution
- DIY hobbyists handling home and workshop projects
Why Professionals Choose This Tool
- Heavy-Duty Grinding: Wider 3/4" belt and longer 20-1/2" loop provide more aggressive material removal and longer belt life than compact models
- Industrial Metal Finishing: Designed for professional welding shops, fabrication facilities, and production environments
- Extended Belt Life: Larger belt surface area distributes heat and wear — belts last 2-3x longer than 1/2" x 13" belts on the same job
- Weld Seam Blending: Wide belt smooths MIG, TIG, and stick weld beads flat for inspection-ready finishes
- Robust Construction: Built for daily production use with heavy-duty bearings and reinforced housing
What's in the Box
- LE-BS-708B air belt sander body
- Sanding belt (3/4" x 20-1/2" pre-installed)
- Belt tension adjustment mechanism
- Air inlet fitting (1/4" NPT)
- User manual
Compatible With
| Sanding Belts | 3/4" x 20-1/2" (20mm x 520mm) — all standard abrasive types, 40-320 grit |
| Air Compressors | 5-6 CFM at 90 PSI, 30+ gallon tank recommended |
| Materials | Steel, stainless steel, aluminum, wood, composite, body filler, fiberglass |
Ideal Applications: heavy weld grinding, industrial metal finishing, fabrication deburring, stainless steel polishing, production sanding, large surface prep, steel structure maintenance
Frequently Asked Questions
What air compressor do I need for the LE-BS-708B Air Belt Sander 3/4" x 20-1/2"?
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-BS-708B Air Belt Sander 3/4" x 20-1/2" 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.
When should I choose the 3/4" belt sander over the 1/2" model?
Choose the LE-BS-708B (3/4" x 20-1/2") when you need faster material removal, longer belt life, or are working on larger flat surfaces. The wider belt covers more area per pass and handles heavier grinding jobs. Choose the LE-BS-706B (1/2" x 13") for tight spaces, detail work, and contour sanding where a narrow profile is essential.
What CFM does my compressor need for the LE-BS-708B?
The LE-BS-708B requires 5-6 CFM at 90 PSI for optimal performance. A 30-gallon or larger compressor with at least 6 CFM output provides enough air for continuous sanding without pressure drops. For intermittent use, a 20-gallon compressor works but expect short recovery pauses.
Can I use this belt sander on stainless steel?
Yes. Use zirconia or ceramic belts (60-120 grit) for stainless steel — they cut cooler and last longer than aluminum oxide on stainless. Keep the sander moving to prevent heat buildup and discoloration. The LE-BS-708B handles stainless weld blending, surface finishing, and scratch removal.
How It Compares
The LE-BS-708B's wider 3/4" belt and 20-1/2" length cover more surface area per pass than the narrower LE-BS-706B, making it better for larger panel work and heavy-duty grinding. Compared to disc sanders, belt sanders provide better control on flat and contoured surfaces without creating swirl marks. The 708B is ideal for production environments where speed and coverage matter more than tight-space access.
Shipping Information
- Free shipping on every US order, with no minimum.
- Most orders arrive within 3–5 business days.
- Items marked factory-direct ship from the Le Lematec factory and arrive in 10–15 business days; an express upgrade to 3–5 business days is available at checkout.
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 12-Month Satisfaction Guarantee — replacement, exchange or refund, with no restocking fee.
If within 12 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 sales@proairtools.com
A phone call at +1 828 398 0334
PO Box 8367
725 MERRIMON AVE
ASHEVILLE, NC 28804-2447
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