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SAG Mill Grinding Media

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SAG Mill Grinding Media

  • FOB Reference Price
    $1,215.00 /ton
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    321 Tons Sold. ( >180 days)
    Response Time 6 hrs
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  • Delivery time:

    Sunday 12th January 2020 ?

    Kemcore ships within 14 day after receiving cleared payment.

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 Grinding balls costs make up 10% of consumable costs for mining companies- costing millions of dollars.  Using poor quality balls does not just compromise your milling efficiency but also comes with a cost penalty because of high wear and breakage rate. 


Grinding Media Specifications:


Kemcore grinding media are manufactured to exact specifications at two grinding media production facilities in Jinan, China. The balls are manufactured from high carbon low alloy steel bars and then forged into balls. The steel forged balls are produced visa air hammer, roll forging for larger diameter SAG balls and rotary rolling for mining grade grinding media.


Optimum wear and impact resistance are the main considerations in controlling the chemistry and microstructure during the production process.


Our steel forged grinding balls in the diameter range of 3.5"-6" are classified as SAG balls and are primarily used in SAG mill operations. 


Quality Standards: Products manufactured in China. Certified under ISO 9001 Quality Standard and ISO 14001 Environmental Standard.



Our forged balls come with the following guarantees:


Breakage guarantee:


  • Up to 1% - no replacement


  • 2-4 %-replacement of broken balls of the diameter concerned


  • Over 5 %replacement of the complete mill charge


Proven Wear rates: Snap shot

1-Brazilian multinational diversified metal company- Metallurgical Test results available on request.


  1. Proven wear rates of 523g/ton in their Copper mining operations.
  2. SAG Size balls tested : 140mm 
  3. The % of broken balls and scraps in the SAG mill discharge were reduced considerably
2-JSE-Listed Gold Miner Seeks to Reduce Grinding Media Spend along with Lowering Wear Rates.-Metallurgical Test results available on request.

  1.  Proven wear rates of  0.61 kg/ton After 6 months of industrial testing. 
  2. Recorded relatively high average grind efficiency of 21.59 % for 106 μm and 37.31 % for 600 μm.
  3. Proven to have the  least wear rate among 3 competitor products by showing the lowest consumption rates of 0.7kg/t and 0.61 kg/t for ball and SAG mills respectively.


Surface and Volumetric Hardness (Rockwell C)

Hardness (HRC)

Ball Diameter
Surface Hardness Volumetric Hardness
Min Max Min Max
3.5"/90mm 60 65 59 65
4"/100mm 59 64 59 64
4.5"/120mm 58 63 58 63
5"/125mm 57 62 57 62
5.5"/140mm 55 61 55 61

Choose from Kenmore’s wide variety of grinding media products, including forged steel balls, cast balls or grinding rods. Kemcore supplies high quality Grinding Media with maximum durability, designed to resist wear and deliver exceptional performance for your most demanding comminution requirements.  An improvement in wear rates and life, or decrease in price of grinding media, can represent significant savings.


Selecting the best-quality grinding ball is a key step towards reducing your mining costs.

Talk to us about your grinding media requirements.


SAG Forged steel production ChinaChemical Composition(%) Price/ton
Ball Diameter
C Si Mn Cr S P  
Min Max Min Max Min Max Min Max Max Max  
3.5"/90mm 0.72 1.05 0.2 0.4 0.7 1.0 0.4 0.6 0.035 0.035 $815.00
4"/100mm 0.55 0.66 1.3 1.9 0.65 0.9 0.6 1.0 0.03 0.03 $815.00
4.5"/120mm 0.55 0.66 1.3 1.9 0.65 0.9 0.6 1.0 0.03 0.03 $815.00
5"/125mm 0.5 0.7 0.17 0.37 0.7 1.0 0.9 1.1 0.03 0.03 $815.00
5.5"/140mm 0.5 0.7 0.17 0.37 0.7 1.0 0.9 1.1 0.03 0.03 $850.00
Our forged balls come with the following guarantees:
Breakage guarantee:

up to 1%


no replacement

2-4 %


replacement of broken balls of the diameter concerned

over 5 %


replacement of the complete mill charge


Packaging Options


Bags: Our grinding media can be supplied in UV resistant polypropylene (PP) bags. Our bulk bags are also equipped with lifting straps to allow easy loading and unloading.


Drums: Our grinding media can also be supplied in sealed recycled drums strapped to wooden pallets.



  • With thousands of suppliers competing for our business, Kemcore has proven to be the most reliable and consistent import/export company in China, offering quality chemicals at competitive prices. We strive to continue working with them.

    Macheng Macheng

    Senior Buyer

    KS Energy (Pty) Ltd

  • Kemcore’s greatest advantage is understanding our culture, values, and expectations for business transactions, quality, and delivery from the Asian market feeding into Africa. Our business started with trial orders of 20 tons to the current 350 tons per month.

    Mike Peto

    Managing Director

    Sesani EPCM

  • Our import volume of chemicals and other mining accessories stands at $5.65mil/yr. We have significantly increased our market share due to the competitiveness & consistency in quality.

    Menfred Mukumba (MCIPS)

    Supply Chain Manager

    Intrachem Pvt Ltd

  • Kemcore continues to be  instrumental in procuring a complete suite of reagents for  our gold/copper flotation plant . I do not hesitate to recommend Kemcore services for Xanthate, DTP's plant reagent supply, especially when procuring out of China.

    Brienie Dzumbunu

    Metallurgical Superintendent

    Pan African Mining

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