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Green Non-Woven Stone Polishing Disc
Specifications
Abrasive Material |
Silicon Carbide |
Attachment Type |
Install with angle grinder use |
Brand |
Xinsilu |
Center Hole Diameter (Imperial) |
5/8 in, 7/8 in |
Center Hole Diameter (Metric) |
16 mm, 22 mm |
Product Form |
Non-Woven Polishing Disc |
Density |
5P, 7P, 9P, 12P / U1,U3,U5,U8 |
Form Type |
Unitized |
Grade |
180#,240# |
Max RPM |
15300,13300,12200 |
Overall Diameter (Imperial) |
44 in, 4·1/2in, 5 in, 6 in |
Overall Diameter (Metric) |
100 mm, 115 mm, 125 mm, 150 mm |
Overall Width (Imperial) |
1/2 in, 3/5 in |
Overall Width (Metric) |
13 mm, 15 mm |
Product Color |
Green |
Green Non-Woven Stone Polishing Disc
Non-woven discs for angle grinders have three components: strong synthetic fiber mesh and quality abrasives,
bonded together by a smear-resistant adhesive. Rapid Strip discs have anopen web construction that enables
aggressive cutting action while maintaining a cool, non-loading surface. Rapid Blend discs have a unitized
construction with varying weave – from open to tighter – for deburring and finishing. Rapid Prep discs have a
more open weave that excels in surface preparation and clean-ing. Each product provides excellent cutting
action while improving surface finish.
Why there?
• Deburring, blending and finishing with one product to
reduce the number of steps
• Provides a controlled, sustained finish
• Prevents undercutting and gouging
• Provides a cooler grinding action to lessen the chance
of warping or discoloration
• Ideal when loading is an issue, on fiberglass, adhesives
and soft metals
• For stripping coatings and paint off of hard materials like
concrete, cement, and stone
• Less vibration and quieter for high operator acceptance
• Provides an alternative to wire brushes
Components of Non-Woven Abrasives
While non-wovens are made in a different way than conventional coated abrasives, both types of products
use many of the same abrasive minerals. Silicon carbide is sharper, cuts faster, and produces finer scratch
patterns on most surfaces. Aluminum oxide is more durable and tends to last longer. It is more aggressive
on certain applications (such as hardened steel parts), and produces less discoloration on aluminum.
When the non-woven supplier talks about grit, he is referring to the size of the abrasive grain impregnated
into the nylon web. The lower the number, the larger the grains. The use of large particles (coarse grit)
results in a more aggressive cut and a coarser finish. Small size particles result in a non-woven product
that produces fine surface finish, if all other conditions are equal. In specifying a conventional bonded or
coated abrasive product, the purchaser selects a specific grit size – say, 120 grit. With non-woven
abrasives, by comparison, one of the following designations is used:
Grit Designation and Comparable Grit Ranges
Coarse (C) 50 – 80
Medium (M) 100 – 150
Fine (F) 180 – 220
Very Fine (VF) 240 – 360
Ultra Fine (UF) 600
Micro Fine (SF) 1000 – 1200
Another term used in the specification that is probably unfamiliar to the buyer of conventional abrasives
is density. This refers to the number of bonding agents and the amount of abrasive grain that has been
compressed into the non-woven product. In general, harder density products cut faster, last longer,
and produce finer finishes than softer density products. However, softer densities offer more
conformability to the work surface and less tendency to load or burn the workpiece. Two other factors
in the design and manufacture of non-woven abrasives are the sizing of the nylon fibers and the
bonding agents used. Fiber size has a significant effect on the product’s cutting characteristics,
while the type of waterproof resin used to bond the fibers together (and to anchor the abrasive to the
web) can alter the characteristics of the product. The non-woven manufacturer selects the appropriate
fiber size and bonding agent based on the intended application for the product; therefore, these
components are not included in the product offering specifications.
A typical specification on a non-woven abrasive product might look like this: 8 A/O MED. The first
symbol – in this example, the “8” – refers to the product’s density. This can range from 2 (open/most
conformable) to 9 (densest/ most durable). The second symbol denotes the abrasive used. “A” or
“A/O” refers to aluminum oxide, while “S” or “SC” stands for silicon carbide. The final designation –
“MED” – denotes the grit size of the product, as outlined above.