Honing is an advanced cutting method characterized by a tool that both rotates and reciprocates while being guided by the surface intended for machining. This technique stands out for its high efficiency, with the ability to finely adjust roundness, cylindricity, and surface roughness on demand, making it the perfect choice for high-precision machining of inner holes.
Diamond oil stone:This tool is expertly designed for precision machining across a versatile range of materials, including cast iron, aluminum alloy, copper alloy, ceramics, cemented carbide, magnetic materials, electric carbon products, and other non-ferrous metals.
Cubic boron nitride (CBN) oil stone:Ideal for processing high-hardness materials such as tool steel, die steel, alloy steel, stainless steel, and quenched parts, as well as surfaces with chromium plating.
Product Parameters
Sunnen type Honing Stones specification chart:
K series:
Honing Units |
K3 |
K4 |
K5 |
K6 |
K8 |
K10 |
K12 |
K16 |
K20 |
AK20 |
AK30 |
Stone Length(mm) |
15 |
15 |
18 |
19 |
32 |
32 |
45 |
67 |
63 |
63 |
63 |
Diamater Range(mm) |
2.5-3 |
3-4 |
4-5 |
5-6 |
6-8 |
8-9.5 |
9.5-13 |
13-16 |
16-19 |
19-32 |
32-40 |
B series:
Honing Units |
B8 |
B10 |
B12 |
B14 |
B16 |
B20 |
AB30 |
Stone Length(mm) |
47 |
47 |
60 |
70 |
85 |
95 |
95 |
Diamater Range(mm) |
6-8 |
8-9.5 |
9.5-13 |
9.5-13 |
13-16 |
16-19 |
19-32 |
L series:
Honing Units |
L3 |
L4 |
L5 |
L6 |
L8 |
L10 |
L12 |
L16 |
L20 |
Stone Length(mm) |
25 |
25 |
32 |
35 |
57 |
57 |
88 |
114 |
114 |
Diamater Range(mm) |
1.9-3 |
3-4 |
4-5 |
5-6 |
6-8 |
8-9.5 |
9.5-13 |
13-16 |
16-32 |


Detailed Photos

Company Profile
Since its establishment in 2010, Zhengzhou Auto Superabrasives Products Co., LTD. has been an innovative leader in the realm of superhard material products. Specializing in crafting precision honing tools, the company serves diverse industries such as automobiles, motorcycles, refrigeration, hydraulics, textiles, mining machinery, power tools, and aerospace. Our products, designed for precision machining of inner parts like cylinder blocks, gears, connecting rods, pistons, oil pump nozzles, and hydraulic components, are trusted by professionals across these domains.
Our core offerings include honing stones, reaming and honing sleeves, rods, and accessories, compatible with a broad array of both imported and domestic vertical and horizontal honing machines. Adhering to our spirit of 'excellence and the pursuit of perfection,' we are dedicated to delivering professional, efficient, and precision honing tools, ensuring superior service for every customer.
Our Advantages


1. Who are We?
Zhengzhou AUTO Superabrasives Products Co., Ltd., situated in Zhengzhou, Henan, China, has been a pioneer in the development, production, and sale of honing tools since 2010.
2. What are the products?
Our honing tools are versatile and expertly crafted for compatibility with prominent honing machines such as Roltter, SUNNEN, Gehring, Nagel, Kadia, Engis, Nissin, Fuji, Toyo, Mas, among others.
3. How to ensure quality.
We utilize diamond and CBN abrasives renowned for their high strength, superior self-sharpening capabilities, and high concentration. Our production testing rigorously adheres to specified process requirements, ensuring unparalleled quality in every tool.