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Belt Calculator – RB346 J-Flex Aluminium Oxide Abrasive Sanding Belts
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Hermes RB346 J-Flex aluminium oxide sanding belts in any custom size for flexible sanding on curved and shaped surfaces.
Enter your required belt width, length and grit below to calculate price and add your custom belt to basket.
Description
Hermes RB346 J-Flex Aluminium Oxide Abrasive Belts – Flexible Sanding Belts for Contoured & Shaped Surfaces
The Hermes RB346 J-Flex aluminium oxide abrasive belt is designed for sanding tasks where surface shape, contour, and operator control matter just as much as cutting power. Built on a flexible J-weight cloth backing, RB346 conforms more easily to curves, edges, and profiles than standard rigid belts, making it ideal for finishing shaped components without digging in or flattening detail.
While many abrasive belts focus purely on stock removal, RB346 is about control, consistency, and finish quality — especially in areas where a stiffer belt would struggle to follow the surface.
Using our Belt Calculator, you can order RB346 belts in custom sizes and grit options, ensuring the belt fits your machine and application perfectly.
Why Choose a J-Flex Belt?
- Improved flexibility for curves, edges, and shaped parts
- Better surface conformity for consistent contact
- Reduced risk of over-cutting on edges and profiles
- Ideal for finishing and intermediate sanding
- Comfortable sanding feel with good control
Best Applications
- Shaped and profiled metal components
- Curved surfaces and radiused edges
- Light deburring and surface refinement
- General fabrication finishing work
- Maintenance sanding tasks requiring control
Aluminium Oxide vs Zirconia vs Ceramic (Where RB346 Fits)
| Abrasive Type | Best For |
|---|---|
| Aluminium Oxide (RB346) | Controlled sanding, general use, shaped parts, finishing steps |
| Zirconia | Heavier pressure metal grinding, longer life, aggressive stock removal |
| Ceramic | Maximum productivity, toughest alloys, fastest removal under load |
RB346 sits in the precision and control end of the spectrum, rather than heavy grinding.
Order the Exact Belt Size You Need
With our online abrasive belt calculator, you can:
- Enter your belt width and length
- Choose grit size
- Get instant pricing
- Avoid ordering incorrect sizes
This ensures the belt you receive is made specifically for your machine, reducing downtime and waste.
Common Questions
Is RB346 for heavy grinding?
No — it’s designed for controlled sanding and finishing on shaped surfaces.
Why choose J-Flex?
The flexible backing helps the belt follow contours and reduces edge gouging.
Can I order custom sizes?
Yes — use the belt calculator above.
