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Quick Details

  • Condition: New
  • Type: Surface Grinding Machine
  • CNC or Not: Normal
  • Max. Grinding Diameter: 750mm
  • Max. Grinding Length: 750mm
  • Place of Origin: Fujian, China (Mainland)
  • Brand Name: Xingyi
  • Model Number: XY-Q9C
  • Voltage: 380V-440V
  • Power(W): 11000
  • Dimension(L*W*H): 130*80*120cm
  • Weight: 350kg
  • Certification: CE,SGS,ISO9001
  • After-sales Service Provided: Engineers available to service machinery overseas
  • Property: construction machines for grinding concrete floors
  • Horse power: 15HP
  • Use: floor grinding
  • Colour: can designed according to customers' need
  • Grinding Disc: 260mm*3
  • Working mode: dry and wet grinding
  • MOQ: 1 set
  • OEM: yes
  • Guarantee: one year guarantee
  • Accessories: LED light, wire rack, vacuum pipe, add weight, water proof...

Packaging & Delivery

Packaging Details use the plywood case to pack the construction machines for grinding concrete floors, ensure it is safey
Delivery Time delivery within 1 week after payment


construction machines for grinding concrete floors
1can grind the different floors
2can do wet and dry grind

construction machines for grinding concrete floors 


The machine and consumptions you need in dry polished concrete project:







Product Description


1.New configuration of Q9 has WD IE2 motor,the Delta inverter under warranty for all life around

the world. Crafted,durable and attractive.

2.Adopt 380V variable frequency speed control. Gear box and motor are made of Aluminum alloy.

3.With 2 Planet gear box and automatic pressure adjust system, the efficiency can be increased  by 3 times.

4.Automatic level adjust system ensures good smoothness and stable operation.

5.Collapsible handgrip,separable design, convenient to handle.

6.It can be equipped with vacuum equipment to achieve dry and wet polishing working.

7.It is very good use for big area polishing project.

8.It is easy and fast to change the abrasives with the New Multifunction support frame system,

you can use different polishing abrasive to polish different floors no need change to one new machine.

9.Gear drive is better than belt drive.

10.Planet runing ensure the cut is fast and efficient.

(2)Technical Specification







Rotating Speed



Operating width






Horse power






Grinding head



Water tank



Drive Type

Gear Driven Type

 Gear Driven Type


(3)More detail


Vacuum hose ensure free dust working in dry polishing


Oil filler,after 6 months polish work you need change the new oil to ensure the machine can have long lifetime and polish smooth.

Multi-function  polish disc you can use different kindsof the polishing pads


WD motor is IE2 motor saving energy




Packaging & Shipping


Company Information

Xingyi Polishing Machine Co.,Ltd is located in Jinjiang city, Fujian Province PR of ChinaHe is specialized in manufacturing floor grinding & polishing machines; professional in doing projects of decorative concrete and stone caring. It is an enterprise with technology and innovation. He was established by Mr. Genyi Ye in 1999. Now he has developed into a large-scale enterprise with four subsidiaries: Jinjiang Xingyi Polishing Machine Co.,Ltd, Nan'an Xingyi Stone Caring Tools Co.,Ltd, Boke Concrete Decorate Co.,ltdNan'an Xingyi Stone Trading Co.,Ltd and 23 branch companies.

We now have sole agents in about 19 countries, and 7 distributors.

For more detail, please feel free to contact with us.


Where is your factory?  

Jinjiang, Fujian Province, one hour driving from Xiamen International airport.

When is your conrete polishing and coloring seminar?  

In March and November each year.

What's the difference between planetary and counter rotating grinder?  

Planetary grinder is sharper and powerful, good at do grinding to level the floor; counter rotating grinder is more stable and smooth during operation, good at doing polishing.

Do you have office in...?

We have sole agent in 19 countries: The United State America, Mexico, Hong Kong, Vietnam, South Korea, Philippines, GCC countries (Bahrain, Kuwait, Oman, Qatar, United Arab Emirates, Saudi Arabia), Turkey, Iraq, Azerbaijan, Egypt, Sudan, Libya.

Bangladesh, wood floor polishing machine only.

7 Distributors: Brazil, Thailand, Chile, Taiwan, Malaysia, Canada, Japan

Can you show me your machine vedio?


About concrete polishing process: http://youtu.be/xPl8bwxejYc

About stone polishing process: http://youtu.be/Iy60eflCTwk

Why choose Xingyi?

1. We have 6 sets of CNC machine for manufacture the gear, 2 sets of Qinchuan brand YK7236A professional gear grinding machine.

2. Quality be rest assured by XingYi.

3.  Provide systematic training on products and technologies, offer opportunities to learn knowledge of machine operation and maintenance.

4. Worldwide sales network in more than 100 countries. Most countries have XingYi agent or office which promote after-sale more convenience.

5. Visit the agent each year, solve customer's problems at the site in time

6. Provide OEM production for many countries successfully

7. Ready and receive customervisit plant at anytime.

For more questions, welcome to contact with us and come to visit our factory. 



Polishing technology

Why do we need to do concrete polishing and hardening?

The concrete floor is easy to be weathered, dusting and sanding without doing hardening and polishing.

Conversely, the concrete floor can extend the life-spam with good vision and more durability after being polished. It can prevent dusting and sanding. It is easy to be cleaned.

How to distinguish the concrete hardness? How to do it without instruments? Do I have to select a lighter machine when it is soft concrete floor?

Way 1: With Concrete Floor Hardness Tester

Under 30 PSI soft concrete

30-50 PSI medium concrete

Up to 50 PSI hard concrete

Way 2: With a hard material to do a simple test(like a coin). Commonly used in China.

Coin Test Method

A. With a coin to scrape the floor and get a result of marked but can not go deep, that means the density of the floor is good. Generally, this kind of floor is C30 label with good maintenance of industrial concrete floors and carborundum wearable floor. The grinding curing construction effect is obvious. It has good brightness and the cost can be controlled.

B. With a coin to scrape the floor and there are obvious signs of grooves, then the label of this kind of floor is usually low and it is bad maintenance concrete floor. For this kind of floor, we can choose concrete hardening technology, it can also have an obvious effect after construction, but the construction costs are significantly higher.

C. With a coin to scrape the floor and you can draw a deep groove easily. And even the groove can bury the coins. Then we shall give up this kind of floor and do not need to think about any construction process. We can just communicate with the Party B directly to shatter the existing terrestrial re-paving concrete. To do good maintenance and polished concrete after that.

D.Test the floor with your own eyes.--It is not scientific.

Way 3: Mohs pencil

What's the differences between dry polishing and wet polishing? When shall we choose wet polishing?

A. The advantages of concrete dry polishing:

1. It can reduce the moisture content of the floor, which will help the densifier penetration.

2. The powder is filled into the holes and reacted with hardener to form a crystal which improves the compactness of the floor.

3. It is good for checking the level of all steps of grinding and if the surface scratches are well-distributed. It is better for timely remedial rework. The quality of construction is higher.

4. This polishing system is equipped with industrial vacuum. The waste generated by dry polishing is easy to be handle and recycled. Environmental protection is required by most countries.

5. The main composition of concrete is silicates which is suitable for physical polishing. It can improve the floor smoothness and keep it more longer. Wet polishing can not reach such high temperatures, which is not good for polishing and the brightness will not last long. Higher costs need for maintenance.When we do wet polishing, the mud is mixed with water. There are water stains left and get a hazy feeling.

Disadvantages: It needs to be equipped with vacuum equipment to achieve dust-free working. The cost of abrasives are relatively higher than wet polishing.

B. The advantages of concrete wet polishing:

1. The grinding effect of wet polishing is better than the dry polishing as it can better moisturize the abrasive.

2. The grinding media generated from wet polishing can reduce scratches.

3. The costs of abrasives are lower than dry polishing relatively and it is suitable for a wide range.

Disadvantages: Non-environmentally friendly. The security coefficient is lower than dry polishing. The wasted mud is hard to deal with and it is very prone to clogging drains.

Polishing process is depend on the customer’s and operator's choice.

How to account the cost of polished concrete floor ? How to quote ?

The main costs of polishing concrete include: hardener costs, abrasive costs, labor costs, waste disposal costs, travel expenses, depreciation of machinery and management costs.

A. Hardener Costs: hardener in different brands have different prices.

B. Abrasive Cost: First depend on what system you choose: wet or dry polishing systems. And different condition floors get different hardness, so abrasive consumes are not the same. The hardest of floor, the less of the abrasive consumes. The better quality of the floor,the less of the abrasive consume,

According to the requirements of the result, product costs are not the same. For example, high degree final result needs at least to polishing till 3000 #. 400# just get hone final floor. Metal diamond pads 30# or 60# used for leveling floor. Of course, if you use more grits, then grind cost, labor costs will increase accordingly.

C. Labor costs: different places have different labor costs standard. The higher efficiency machinery you used,the less labor costs you can get.

Therefore, the cost of polishing concrete depends on the material chosen by customers, polishing process, machine efficiency, customer requirements, technical workers and other factors. Cost is approximately $ 1 -$10/ m2.

Price: Do demo on a 50 sq.m job for clients, then calculate the cost.

If the concrete floor have small apertures/holes, then how to resolve it? What steps to deal with the small apertures?

A: Solution: cement + concrete hardening agent or cement + concrete interface agent to fill in thin apertures faces. Do not add any water. Normally, to do this step after grinding metal or resin pads 200#. Currently we use concrete interface agent in our own site. The sales price at 26 RMB / kg.

How to grind concrete floor which is still rough after grinding ?

A: Check the concrete surface conditions. If the surface is very flat, just skip the metal grinding pads.

If the concrete floor is still rough after grinding, that means the concrete is not hard enough.

Solution: 1 Harden the floor, then grinding it with 60 # metal pads;

               2 Copy the first steps.

               3 Copy the second steps (At least three times for those steps. According to the surface situation and decide whether you need to do hardening treatment again. Do leveling with 60# metal pad till the floor is smooth fully.)

(Note: Hardening process need to wait 4-24 hours till it is dry enough. The longer, the better. Remain semi-wet and dry polishing status. Equipped with industrial vacuum to avoid dust from coming up again.

Next, resin polishing pads 50 # 100 # 200 # to do polishing (Dry or Wet are both OK, but not too wet) --- densifier --- 400 # 800 # 1500 # 3000 # (dry polishing).

How to deal with a super-soft or super-hard concrete floors? What are the differences between the procedures with the ordinary one?

If it is a super-soft concrete, we can use our two-component type hardening agent. First with CHA-09C agent to enhance the hardness of the concrete, and then grinding (abrasive should be anti-friction one).

If the ground is super-hard, you can choose one-component type hardening agent, but the abrasive should be sharp enough one. Grinding processes are the same.

How to grind the corner of the concrete floor?

With edge grinder X20 and polishing pads JL-N /JL-L 50# 100# 200# to do wet /dry polish at a rotating speed of 600-800rpm. And then use polishing pads XMD 400# 800# to do dry polish at a highest speed.

During the processes of concrete surface grinding and polishing, what level of brightness can each polishing step achieve? How about in domestic concrete floor ?

Generally, the brightness of the normal concrete polishing is related to the surface condition, the weight of the machine and the rotating speed. The harder the concrete is, with heavier machine and higher speed, the result of brightness will be better.

Under normal circumstances, if the hardness of floor can reach more than C30, then it can achieve 30 degree with using pads until 800#. And it can achieve 50-60 degree if 3000# used (You can see yourself on the ground like a mirror after using 3000#). If a higher gloss requested, you need to use concrete polishing agent to auxiliary polishing. It can achieve marble shining effect.

During rough grinding, what is the suitable RPM on grinding machine? And what about fine polishing?

When rough grinding, the speed should be 1100-1300 rpm. And when doing polishing, use the highest speed as polishing machine can.

Will it reach the effect of dust-proof and waterproof after the whole processes of polishing on concrete floor ? If it will release toxic gases when it is used for indoor?

Yes , it can prevent the dust , but for the waterproof, it depends on what kind of curing agent you choose. Seal type hardener can do waterproof. There also has a concrete protective agent (protective agent) in the market can reach a certain degree of waterproof and prevent oil, but not 100% sure. If you choose that , you’d better test it first. Now, VOC emissions of aqueous hardener on the market is "0". Therefore, the customer can be rest assured of that.

How to deal with the very uneven concrete surface with deep ravines?

If the basement of floor is very strong, first,you can use milling planer to plane until smooth, then reoccupy metal # 16/20 start grinding together with our grinding machine.

Is there any other agents we can use (except hardened agent ) when polishing concrete ground?

Yes ,there are. Such as Concrete colorants, concrete protective agent, concrete polishing agent, concrete protective agent and so on.

BTW: At present ,one product has multiple names on the market. The above names here are just for your reference.

Due to the limited site socket, if we can put the grinding machine and industrial vacuum cleaners merged into a power source, i.e., the grinding machine and industrial vacuum cleaner connected directly. The industrial vacuum cleaner is connected to a power source. Is that ok?

Yes, we can connect it through a distribution box. The requirement of the main line must meet the requirements of 7.5 KW for industrial vacuum cleaners and a 11 KW grinding machine line with at least 10 or more flat.

Would construction method be different due to the construction of the concrete surface hardening polishing in different environments ? (indoor, outdoor, clean environment).

No, they are the same. Only grinding in different ways, the construction methods are different.

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