VSM XK870X double rings

VSM XK870X double-layered belts: high-performance ceramic abrasive

VSM XK870X double-layered belts are tailored for intensive abrasion tasks on hard metals and stainless steels. The ceramic grain constantly fractures to expose new sharp edges: the tool remains aggressive for longer.

Result: a significantly longer service life than conventional abrasives, with a high material removal rate maintained from start to finish.

This is the go-to sanding belt for professionals who don't want to change tools every five minutes.

What are VSM XK870X double-layered belts?

VSM XK870X double-layered belts are closed-loop abrasives designed for spindle or vertical-axis sanding machines. Their double-layered format ensures optimal mechanical stability under high pressure.

They are intended for demanding industrial applications: deburring, grinding metal parts, and finishing stainless or alloy steel. The XK870X ceramic grain clearly distinguishes them from conventional abrasives.

Composition and technology of the XK870X ceramic grain

The sol-gel ceramic grain used in the XK870X range is manufactured by VSM using a controlled sintering process. Result: very hard crystals with progressive micro-cracking that self-sharpen during use.

Unlike standard corundum grain (such as classic aluminum oxide), the XK870X ceramic grain regenerates continuously. It maintains an aggressive cut for longer, without excessive heating of the workpiece.

The backing is a robust polyester cloth, resistant to repeated bending and humidity. It withstands high speeds without delamination.

• Grain: self-sharpening sol-gel ceramic
• Backing: double-layer polyester cloth
• Use: ferrous and non-ferrous metals, stainless steel, alloy steel
• Key advantage: significantly longer service life than corundum abrasives

Product	Grain type	Backing	Main application	Relative service life
VSM XK870X	Sol-gel ceramic	Polyester cloth	Metals, stainless steel, alloy steel	⭐⭐⭐⭐⭐
VSM XK880X	Ceramic + mixed corundum	Polyester cloth	Steel, cast iron	⭐⭐⭐⭐
VSM KK711X	Normal corundum	Cotton/polyester cloth	Wood, light metals	⭐⭐⭐
3M Cubitron II	Triangular ceramic	Polyester cloth	Stainless steel, titanium	⭐⭐⭐⭐⭐

Available grit sizes and fields of application for XK870X belts

VSM XK870X double-layered belts are available in several grit sizes, covering needs from aggressive stock removal to intermediate finishing.

The most common grits range from P36 to P120. Coarse grits (P36, P40, P60) are designed for rapid material removal on stainless steel, alloy steel, and titanium. Medium grits (P80, P100, P120) allow for a transition toward finishing.

The ceramic grain of the XK870X fractures during use to constantly expose new sharp edges. Result: a significantly longer service life than classic alumina abrasives.

Typical fields of application:

• Grinding and deburring on stainless steel
• Sanding of forged parts and castings
• Work on titanium and superalloys
• Surface preparation before welding or heat treatment
• Stock removal on hard steels and alloy steels

To better position the XK870X within the VSM range, here is a comparison with two similar references:

Product	Abrasive grain	Typical grits	Target materials	Key strength
VSM XK870X	Ceramic	P36, P120	Stainless steel, titanium, superalloys	Maximum service life, self-sharpening
VSM XK880X	Premium ceramic	P36, P80	Superalloys, hard steels	Even higher removal rate
VSM KK712X	Semi-friable corundum	P40, P180	Steel, aluminum, wood	Versatility, controlled cost

Machinable materials with VSM XK870X abrasive belts

The ceramic grain of the VSM XK870X is tailored for hard and demanding materials. It self-sharpens under pressure, maintaining an aggressive cut throughout the life of the abrasive.

It excels on stainless steels and alloy steels, where conventional grains dull quickly. This is its preferred domain.

It also works effectively on:

• Hardened steels and high-strength steels
• Carbon steels and structural steels
• Titanium and titanium alloys
• Nickel alloys (Inconel, Hastelloy, etc.)
• Austenitic and duplex stainless steels

Conversely, the XK870X is not suitable for aluminum or soft non-ferrous metals. For these materials, VSM offers other references with corundum or silicon carbide grain.

Product	Grain	Target materials	Key strength
VSM XK870X	Ceramic	Stainless steel, titanium, nickel alloys, hard steels	Aggressive cut, long service life
VSM XK880X	Premium ceramic	Stainless steel, superalloys	Maximum performance on refractory materials
VSM KK712X	Semi-friable corundum	Mild steel, aluminum	Versatility, good cost/life ratio
3M Cubitron II	Structured ceramic	Stainless steel, alloy steels	Triangular grain, cool cut

Comparison: VSM XK870X double-layered belts vs. other market abrasives

VSM XK870X vs. other ceramic and corundum references

The VSM XK870X stands out for its self-sharpening ceramic grain, which maintains an aggressive cut throughout the belt's service life. This is a tangible advantage on stainless steels and difficult alloys.

Compared to a classic alumina corundum abrasive (like the VSM KK712X), the XK870X offers a significantly longer service life. The ceramic grain fractures into fresh micro-edges, whereas corundum dulls progressively.

Against a zirconia-alumina abrasive (such as VSM ZK713X), the XK870X takes the lead on hard materials and high-pressure applications. Zirconium remains relevant for mild steels in heavy-duty work but loses ground on stainless steel and superalloys.

Product	Abrasive grain	Target materials	Service life	Aggressiveness
VSM XK870X	Ceramic	Stainless steel, superalloys, alloy steels	Very high	Very high
VSM ZK713X	Zirconia-alumina	Mild steels, stainless steels (heavy duty)	High	High
VSM KK712X	Alumina corundum	Mild steels, wood, soft materials	Medium	Moderate
3M Cubitron II (belt)	Shaped ceramic	Stainless steel, titanium, alloy steels	Very high	Very high

The 3M Cubitron II is the main technological competitor. Both products share the same generation of ceramic grain. The XK870X often stands out for its cut/service life ratio in cylindrical grinding and belt applications.

At Dagobert Industrie, we recommend the XK870X whenever the workpiece is made of stainless steel, titanium, or a nickel-based alloy. Switching to a ceramic grain reduces abrasive changes and improves the consistency of the finished surface.

Machines compatible with VSM XK870X double-layered belts

VSM XK870X double-layered belts are designed to fit common lapping and cylindrical finishing machines on the market.

They function on conventional and CNC lathes equipped with a belt lapping system. The belt is mounted directly around the rotating workpiece, without specific tooling.

These belts are also compatible with superfinishing machines (lapping machines) used in serial production for shafts, crankshafts, and spindles.

Types of compatible machines:

• Fixed and moving headstock lathes
• Semi-automatic and automatic cylindrical lapping machines
• Belt superfinishing machines
• Drill presses equipped with a lapping attachment

The XK870X ceramic grain supports high cutting speeds without premature degradation. It is suitable for both light machines and heavy industrial equipment.

At Dagobert Industrie, we offer these belts in grits adapted to your machines and materials. Consult the technical specifications to verify compatibility with your equipment before use.

FAQ - VSM XK870X double-layered belts

1. What is the difference between a double-layered belt and a single-layered belt?

A double-layered belt has a backing reinforced with an additional layer of fabric. Result: it resists mechanical stress, heat, and deformation under pressure better.

It is the preferred format for intensive applications on hard metals, where a single-layered belt would wear out or tear prematurely.

2. What does the XK870X ceramic grain actually provide?

The VSM XK870X ceramic grain is a self-sharpening abrasive: it fractures in a controlled manner during use, constantly exposing new sharp edges.

This translates into a significantly longer service life than standard corundum grains, and a high material removal rate throughout the entire life of the belt.

3. On which materials can XK870X belts be used?

XK870X belts are designed for machining ferrous metals and stainless steel, as well as hard-to-machine alloys like titanium or superalloys.

They are less suitable for aluminum or plastics, for which other VSM references (such as zirconia-alumina grain) provide better results.

4. Which machines accept this double-layered belt format?

VSM XK870X double-layered belts are compatible with closed-loop belt sanders and linear-type grinders equipped with rollers adapted to the inner diameter of the belt.

Always check the maximum peripheral speed authorized by the machine: it must match the VSM specifications indicated on the product.

5. Which grit should I start with for roughing stainless steel?

For roughing stainless steel, one generally starts between P36 and P60. These coarse grits allow for rapid material removal while taking full advantage of the ceramic's cutting capacity.

One then progresses to finer grits (P80, P120) for finishing passes, depending on the target surface finish.

6. Why choose the XK870X instead of a classic corundum abrasive?

In intensive work, a standard corundum abrasive dulls quickly and requires frequent changes. The XK870X maintains its aggressiveness for much longer thanks to the self-sharpening mechanism of the ceramic grain.

The cost per machined part is often lower with the XK870X, despite a higher unit price, making it a rational choice for regular production.