Premium Xtra Power Freehand Depressed Center 4-1/2 x 1/4 x 7/8( 115x6.0x22mm) Type 27 Abrasive Aluminum Oxide Reinforced Resin Bonded Grinding Disc for Inox and Metal steel

This Xtra Power Depressed Center Grinding Disc 4.5 inch( 115x6.0x22mm) belong to the hot sale grinding disc in our company, because of the high quality with best price. At present , JUMA abrasive grinding disc 115x6.0x22.2mm have diffrent kinds for customer choose .

Product Details

Production Introduction

This Premium Xtra Power  Depresed Center Grinding Disc 4-1/2" x 1/4" x 7/8"( 115x6.0x22mm) has the outer size d1= 4.5 inch (115mm), inner hole dimension d2= 7/8 inch(22mm) and the thickness b= 1/4 inch(6.0mm) .

The 4 1/2 inch grinding discs belong to the Depressed Center Abrasive Disc used on freehand Type27 Xtra Power angle grinder machine for metal steel grinding and INOX steel grinding .


The 4-1/2" x 1/4" x 7/8"(115x6.0x22mm) Depressed Center Grinding Wheel is mainly made of high quality Aluminum Oxide abrasive material and White Aluminum Oxide material. The Aluminum Oxide abrasive material can make the Xtra Power Grinding Wheel have the long life durability character and the white Aluminum Oxide abrasive material can make the Resin Bonded Grinding Disc have the best efficiency. The maximum speed of our Aluminum Oxide Grinding Disc reach 80m/s.


In order the meet different needs from our customers, our Depressed Center Grinding Disc can be manufactured by using 1~4 pieces strengthen fiberglass protection in it with different grit size and different material to ensure the best performance during the using process.

Abrasive Material Introduction

Grit Size Introduction

Hardness Introduction

A--aluminum oxide

16-24   coarse density

D-L  soft

C--silicon carbide

30-60   medium density

M-N medium

Z-- Zirconium aluminum

70-220  fine density

P-S  hard

ZA—Zirconium aluminum/aluminum oxide

T-Y  very hard

AC—aluminum oxide/silicon carbide

WA--white aluminum oxide

a) A-for general metalworking cutting and grinding
b) ZA or WA- for stainless steel cutting and grinding
c) C or GC-for non metal, stone cutting and polishing.

This kind of Resin Bonded Grinding Disc is mainly used on freehand Type27 Xtra Power angle grinder machine for grinding, so it can be named Type 27 Grinding Disc. The Depressed Center Grinding wheels can be used for grinding, polishing and cleaning during the using process. It can be used for Tool steels, high-alloy stainless steels, heat-treated steels ,grey cast iron , malleable cast iron , cast steel , ductile graphite iron , manganese cast iron material and so on . The color of our Aluminum Oxide Grinding Disc can be black, red, and yellow.

4.5inch grinding disc.jpg

Our 4 1/2 inch grinding discs are popular in the market for the main advantage as follow :

Easy and fast grinding

Long life durability and Maximum safety

Comfortable grinding experience

High metal removal rate, best stability,  best efficiency,

Less material loss, noise and dust

The products Depressed Center Grinding Wheel manufactured by our company JUMA ABRASIVE CO., LTD have been directly exported to Thailand ,  Cambodia, Japan, South Korea, India、Sri Lanka , the Middle East, European countries ,the United States and so on . At the same time some famous abrasive cutting wheel and grinding wheel agents also cooperate with us and we supply the OEM products for their sale.  Free samples can be supplied for your checking.

cutting wheel business cooperation .png

Package Introduction

In our company, we supply the color carton box package to pack the Depressed Center Grinding Disc with our international brand name “JUMA".

At the same time, we can also supply the OEM products and design the special package to pack the cutting wheel and grinding wheel, if customer want use their brand name and have their special package

The package of this Abrasive Resin Bonded Grinding Disc 4.5"x1/4"x7/8"(115x6.0x22 mm) as follow, 25pcs/ small bag, 200pcs/ carton box.


Other Information of Abrasive Depressed Center Grinding Wheel 4.5"x1/4"x5/8"(115x6.0x16mm)


Material “A” and “WA”

Our International Brand :


Max speed .:


Certificate :

ISO9001/ MPA EN12413

Fiberglass Mesh:

1~ 4 net

Color :

Black / red /yellow

Sample :


Samples Finished time :


Payment Term

30% deposit, 70% T/T before shipment

Order delivery time :

Within 25days

Loading Port

Shanghai or others port

Place of Origin:

Henan Province , China

Quality Assurance and Quality certificate

JUMA ABRASIVE CO., LTD have the strictly executes quality management system of ISO 9001 in company operation, equipped with advanced production facilities, has a leading level in product designing and development, and has a perfect and strict testing system for material collecting, procedure control, end-product testing and detailed records of production which have made the Company to be able to optimize its production mode successively so as to meet with higher requirements from the clients.

ISO 9001-2008_.jpgMPA certificate .png

More item of cutting wheel and grinding wheel are inspected before order goods delivery, such as boundary dimension testing , equilibrium character testing, circular degree testing , axial runout tolerance testing , Max. rotate speed testing , cutting and grinding performance test on steel bar.


Production line testing equipment

Production Capacity

JUMA ABRASIVE CO., LTD. (hereinafter referred to as the Company), a well-known China enterprise, is engaged in manufacturing professional resin ABRASIVE with its production scale being in the leading position of China. The company which was established in 1997 integrated product development, designing, production, sales and services into a whole.

JUMA ABRASIVE CO., LTD. has already owned 150 sets of advanced manufacturing production line,50 sets in our old factory and the 100 new full automatic production line were put into use in our new factory which have 70,000 square meters with the registered capital ¥15,000,000. The company owns the staff of more than 500, the middle and advanced engineers, technicians and skillful workers account for over 60% of the staff.


Resin-bonded Abrasive Depressed Center Grinding Wheel Series in JUMA ABRASIVE CO., LTD





Box Qty



4 x1/4 x 5/8






4 1/2 x1/4x 7/8






5 x1/4x 7/8






6 x1/4x 7/8






7 x1/4x 7/8






9 x1/4x 7/8





We can supply many kinds of abrasive products, such as cutting wheel, grinding disc, flap disc, flap wheel, abrasive fiberglass backings plate for flap disc , wire brush and so on.

Welcome your inquiry and visit !


1: Are you are manufacture ?

Yes, we are the abrasive products manufacture. We have our own two factory.

2: What is your main products ?

Our main products is  abrasive cutting wheel, grinding disc,abrasive flap disc and fiberglass backing plate.

3: What is your payment term and how long can you deliver goods ?

Our generally payment term is TT , LC.  After getting your advanced payment , we can deliver the goods to you within 20days . 

4:  Do you supply OEM products ?

Yes , we can accept OEM order . In the past days , we supplied many more OEM cutting wheel and grinding disc to diffrent customers . 

You can visit our factory in any time !

As one of the leading premium xtra power  freehand depressed center 4-1/2" x 1/4" x 7/8"( 115x6.0x22mm) type 27 abrasive  aluminum oxide reinforced resin bonded grinding disc for inox and metal steel manufacturers in China, JUMA ABRASIVE now brings you the best quality and low price products from its professional factory. It is of the best performance, strong durability and long lifespan.


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