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Grinding Wheel

Grinding Wheel

When ordering a grinding wheel, please provide the following information for manufacturing:

Our company has mixed and special abrasives for customers to choose and perform better grinding performance, CRA is ceramic corundum abrasives.

Special abrasives: 5IG,5KG,5SG,32PSA,38A,93A,A,C,CA,DRA,GC,IG,MA,SA,TG,WA,19A,27A.

 

 

Grinding Effect of Grinding Wheel

A grinding wheel is a grinding tool that continuously cuts and grinds tens of millions of hard, sharp, and temperature-resistant small abrasive particles on the surface of the workpiece through high-speed rotation operation, and continuously generates self-generated sharp particles and abrasive voids (pores) to continue grinding various materials.

 

Structure of Grinding Wheel

 

Grinding Wheel Labeling and Ordering Method: Specifications and Dimensions

Specifications —— W A 4 6 K 5 V 1 A   Size —— 3 5 5 x 3 8 x 1 2 7
Abrasives Granularity Grade(Hardness) Structure(Pore) Bonding Agent Shape Edge
A Gray-black 16 / / / / / / / / /
20 / / / / / / / 1 /
38A Orange-red 24 / / / / / / / 2 /
36 Rough / Soft / Close / / 3 /
PA Light pink 46 / / V Vitrified 4 A
60 E / 5 B
RA Fuchsia 100 / F / 0 / / / 6 C
120 / G / 1 / / / 7 D
GC Light green 150 / H / 2 / B Resin  8 E
180 / I / 3 / 9 F
WA White 220 / J / 4 / / / 10 G
240 / K / 5 / / / 11 H
AA White 280 / L / 6 / R Rubber  12 I
320 / M / 7 / 13 J
32A Off-white 400 / N / 8 / / / 14 K
500 / O / 9 / / / 16 L
CRA Aqua blue 600 / P / 10 / OM Magnesium oxide  20 M
800 / O / 11 / 21 N
C Black 1000 / R / 12 / / / 22 P
1200 / S / 13 / / / 23 /
19A Brown 1500 / T / 14 / PVA Elastic resin 24 /
2000 Fine U Hard / Open 25 /
64A Grey 2500 / / / / 26 /
3000 / / / / 50 /
4000 / / / / / / / 60 /

 

■ Standard shape

 

■ Standard rim type

 

Other Shapes

Shell grinding wheel: Unified labeling「SUED」
Stone mill: General type「MIL」、Special type「MSP」
Valve seat grinding wheel: Unified labeling「VLVST」
Special variants: Usually marked [SP」
Marble and floor tile special grinding stones:  
Disc: 255X50X50 marked「O」
Ingot: Marked「S」
Type A: Marked「A」
Horseshoe type: Marked「H」

 

Wheel Shape With Handle

AGroup: Atypical
BGroup: Special-shaped shapes with smaller outer diameter size (less than 3/4").
WGroup: All straight wheels with handles belong to this category
AJ Group: Extension of A Group
BJGroup: Extension of B Group
Others: SF、K、LGroup and special specification grinding wheels with handles

 

Sand Strips for Superfinishing Grinding, Cylinder Grinding, Mold and Turning Tool Trimming

Square lemon indication: SQ
Rectangular markings: RT
Circle marking: RD
Semi-circular markings: HR
Equilateral triangle marking: TR
marked with an R: HN
Special-shaped marking: ST

 

How to Properly Choose the Right Grinding Wheel

Grinding Conditions Abrasives Granularity Bonding Organization Binder
Invariable grinding conditions Material of work-piece

●Tensile strength above 30 kg/mm2,such as semi-steel and soft steel . should choose A type grinding wheel.

●Extremely high tensile strength above 50 kg/mm² such as quenched steel,should choose WA type grinding wheel.

●For hard and poor grindability work-piece like alloy steel,should choose DA.RA.DR.32A type grinding wheels.

●For cast iron, non-ferrous metals and non-metallic materials with low tensile strength (below 20 kg/mm²), should choose C type grinding wheel.

●For super-hard alloys and gemstones,please choose  GC type grinding wheel.

●Coarse grains for soft and highly ductile materials.

●Choose fine grains for hard and fragile materials.

●Use hard grade when processing soft workpieces.

●Use soft grade when processing hard workpieces.

●Very soft copper, zinc and iron, etc. are often used with soft grade.

●Soft and sticky workpieces are processed with open structure grinding wheels.

●Hard and fragile workpieces are processed with close structure grinding wheels.

/
Grinding option for stock removal、surface roughness、surface finish effect

●Please select A.AZ type grinding wheel for heavy duty grinding and free grinding .

●GC for mirror finish effect grinding.

●For high efficiency and heavy stock removal coarse grinding, select grit size from #10 to #30.

●Require both high grinding efficiency and the surface finish effect, use the mixed grit size of #243 and #303.

●Select fine grits for light stock removal and fine finish surface grinding.

●Please select hard grade wheel on hand grinding and rough grinding

●Please select medium to soft grade wheels on fine precision grinding.

●Please select open-structured grinding wheel for high-cost and rough grinding.

●Please select close-structured grinding wheels for fine finish/precision grinding.

●Porcelain method (V) is used for rough and medium decoration.

●Resin method (B) Rubber method (R).

●Resin method for heavy loads and heavy free polishing (B).

Contact area /

●Use fine grit size when contact area is small.

●Coarse grain sizes are used for large contact areas.

●Use hard grade when contact area is small.

●Use soft grade when the contact area is large.

●Close-structured wheels for small contact area grinding.

●Open-structured wheel for large contact area grinding.

/
Variable grinding conditions Speed of grinding wheel / /

●Select soft hardness for highspeed wheels.

●Select hard grade for low speed wheels.

/

●Vitrified bond for speed less than 2000m/min.

●Resin bond for speed over 2000M/min.

Speed of work-piece / /

●Hard grade for high speed.

●Soft grade for low speed.

/ /
In-feed rate
or grinding pressure
/ /

●Choose hard grade wheel for large in-feed rate grinding.

●Choose soft grade wheel for small in-feed rate grinding.

/ ●Choose resin bonded wheel on large in-feed rate and high pressure grinding.
Mechanical state / /

●Choose soft grade wheel on machinery with high rigidity and less vibration.

●Choose hard grade wheel on machinery with frequent vibration.

/ ●Choose resin bonded wheel on machinery with frequent vibration.
Whether to use grinding fluids / /

●In wet grinding, please choose one grade harder wheel than in dry grinding.

●In dry grinding, please choose one grade softer wheel than in wet grinding.

/ /
Whether the operator is skilled / /

●Skilled people use soft grade.

●Unskilled use hard grade.

/ /

 

Highlights

Learn about RIHON grinding
We have 35 years of experience manufacturing high-quality resin-bonded and vitrified grinding wheels, while extending our technological innovation capabilities in the traditional grinding wheel field into the superhard abrasives segment. Technological innovation and long-term stable product quality are our core competitive advantages. We have long benchmarked against top international high-end brands, continuously optimizing and iterating, accumulating extensive experience in the R&D and mass production of high-end precision abrasives.
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Porcelain superhard abrasives
RIHON introduces cutting-edge foreign manufacturing technologies and combines decades of traditional vitrified grinding wheel expertise. Its self-developed and produced full range of abrasives meets various precision processing standards such as high speed, high operational efficiency, high grinding ratio, high processing accuracy, long service life, and excellent workpiece surface roughness, enabling the processing of high-hardness special steels. Especially suitable for fully automated, unmanned mass production grinding application, it applies the outstanding stability and processing efficiency of RIHON superhard abrasives, effectively optimizing overall grinding process costs and helping enterprises achieve production goals of cost reduction, quality improvement, and efficiency enhancement. In industrial mass production application, frequent grinding wheel dressing, repeated manual operations, and periodic replacement of abrasives are the core factors restricting the overall production line efficiency. In response, RIHON integrated cutting-edge overseas technology with traditional vitrified sintering process expertise to successfully develop porcelain sintering diamond grinding wheels and CBN grinding wheels. This series features two core characteristics: high porosity and ultra-strong bonding strength, with outstanding chip discharge capability and relatively low grinding resistance. It effectively controls the temperature in the grinding area, reduces risks such as workpiece burns and processing deformation, comprehensively improves processing efficiency, and precisely meets the core production needs of manufacturing enterprises for cost reduction and efficiency improvement. Core product advantages 1. Specialized micropore structure Allows simultaneous dressing,truing. Compared to traditional resin-bonded and metal-bonded grinding wheels, RIHON vitrified grinding wheels feature a controllable microporous structure not found in similar products, allowing them to carry more grinding cooling media; This not only reduces grinding resistance but also stabilizes workpiece dimensional accuracy over the long term, ensuring excellent surface roughness. 2. Excellent free-cutting performance Relying on the bonding performance of high-strength bond, it fully unleashes the cutting performance of individual abrasive grains, reduces the frequency of subsequent grinding wheel dressing, reduces non-processing time of equipments, and improves equipment utilization rates. 3. Outstanding structural compressive resistance performance The overall substrate has outstanding fatigue resistance, especially improving process performance when grinding micro and small-sized precision workpieces. 4. Low threshold for finishing processes and easy parameter control Process parameters can be flexibly adjusted to match the production requirements of different workpiece surface roughness and material removal rates. Most conventional CBN grinding wheels in the industry rely on diamond rollers for dressing, which can only perform optimally under line speeds above 80m/s and high-rigidity equipment. RIHON's self-developed low-concentration ceramic combined with CBN grinding wheels eliminates the need to modify existing equipment; While the original process and dressing conditions remain unchanged, traditional grinding wheel equipment can be directly replaced. Combined with a standard diamond dressing brush, all dressing steps can be completed, offering stable service life and excellent overall cost-effectiveness.
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RIHON dressing and sharpening products series
1. A series of grinding wheel products applied to resin diamond CBN XZK series: XZK001, XZKII, XZK003 Choose different XZK products according to different resin superhard grinding wheels, fast shaping, simple and easy to repair. It is applied to outer diameter, flat surface, inner diameter, centerless, end face, forming. No need to add new devices, just like a diamond pen for quick dressing. 2. Dressing wheels used for end face grinding It is suitable for the dressing of superhard products such as resin, ceramic, metal, and plastic, with a specific texture, fast dressing, without grinding off too much superhard layer, and can be easily made up to 1000#, making the grinding surface better. These are thanks to the long-term close cooperation between world-renowned machine tool companies and Japanese superhard companies, and the accumulated data. 3. Dressing wheels used in the tool industry for superhard grinding wheels Suitable for the dressing of resin, metal, composite, ceramic superhard grinding wheels, regardless of GC, WA abrasives, we have a rich product line, regardless of hardness, fineness (finest 1500#), texture, these ultra-wide range of combinations, choose the most suitable product for you. 4. Sharpen the dressing stone Rapidly exposing super-hard abrasive  without damaging their shape requires advanced technology. These details are crucial to the application of super-hard grinding wheels, yet they are often overlooked, leading to increased costs.   RIHON pays close attention to every detail, conducting in-depth research to ensure ease of use for customers. Dressing and truing are critical steps that determine the performance of super-hard grinding wheels. Excessive grinding can remove  significant amount of abrasive, thereby reducing wheel service life. Moreover, prolonged dressing times and insufficient exposure of superabrasive grains lead to low grinding efficiency and increase frequency of dressing. While manufacturers often focus on the high cost of superabrasive wheels and dressing tools, they frequently overlook the details of dressing and truing—factors that affect dressing effectiveness and ultimately increase overall costs.
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