We manufacture hammers for mills
Hammers for mills
Updated on By Moinhos Vieira – technical team
Moinhos Vieira manufactures hammers for any model of hammer mill, including mills from other manufacturers. The hammers undergo chemical analysis of the steel, metallography on each batch and Rockwell hardness (HRC) tests; quality is verified through a partnership with SGS do Brasil.
- Also for other manufacturers' mills
Which mill is it for?
Choose your mill model: the request form below comes with it already selected.
Also for other manufacturers' mills
Prefer WhatsApp?WhatsApp
How many hammers does each Vieira mill have?
| Model | Series | Number of hammers |
|---|---|---|
| MCS 280 | MCS Series | 30 |
| MCS 350 | MCS Series | 30 |
| MCD 530 | MCD Series | 54 |
| MCD 680B | MCD Series | 54 |
| MCD 680A | MCD Series | 72 |
| MCD 950 | MCD Series | 96 |
Data from each model’s specification sheet. For other manufacturers’ mills, send the drawing dimensions.
Technical drawing
Hammers for mills - model
The hammer for mill model below is for our team to understand your needs!
Vieira mill: tell us the model, the hole size and the quantity. Another brand: also fill in the drawing dimensions in the message and send it on WhatsApp.
Send measurements on WhatsApp
Hammers for mills are metal parts that, when attached to a grinding rotor, enable the desired product to be broken down and micronized.
It is one of the most important spare parts for those who work with hammer mills, as hammer mill grinding is widely used in the human food industry, cosmetics and pharmaceutical industries, as well as pet food companies that work with animal feed. They are very cost-effective and easy to install.
The mills manufactured by Moinhos Vieira use grinding hammers throughout their range of equipment. Depending on the application, these hammers can be made from special steels or even undergo various heat treatments for greater durability against abrasive wear, thus enabling a longer service life for this spare part.
Moinhos Vieira also manufactures hammers for other manufacturers’ mills in a wide range of sizes. In addition to having a laboratory with a WPM Durometer, today we are able to determine the different degrees of HRC hardness through specific analyses and standardize the batches sent to our customers.
Through a partnership with SGS do Brasil, a world leader in inspection, verification, testing and certification, Moinhos Vieira is able to assess the quality of the hammer and guarantee a quality standard in the manufacture of these third-party hammers, maintaining or even improving the characteristics of these parts, due to the excellent analyses carried out.
Specifications of our hammers for mills
Steel's chemical composition
We chemically analyze the composition of the steels we use to manufacture our hammers
Metallography
Metallographic analyses are carried out on each batch of hammers produced to guarantee the quality standard delivered to the customer
Surface hardness
We carry out Rockwell hardness tests in accordance with standards and standardized procedures
Micro-hardness test with layer depth
We measure the surface hardness of hammers. This is useful for applications such as heat-treated hammers for mills
Frequently asked questions
When should I turn the hammers and when should I replace them?
Turn the hammers when the mill's output drops: turning them changes the working edge of each hammer and does not require new pins or spacers. When the hammers are worn out, replace them with a new set.
Why are replacement hammers supplied weighed in pairs?
To keep the rotor balanced. The hammers work in opposite sets on the rotor, and pairs of the same weight prevent imbalance and vibration.
How often should the rotor pins and spacers be replaced?
Every 5 hammer replacements. They do not need to be replaced when you only turn the hammers. More in the rotor pins guide.
What should I do if the mill vibrates after a hammer change?
The likely cause is imbalance: check that the pairs of hammers, pins and spacers have the same weight. If strong vibration starts right after replacing or turning the hammers, switch the mill off and call technical assistance. More causes in the troubleshooting guide.
Do worn hammers reduce output?
Yes. Worn hammers are among the most common causes of lost output and of the mill choking, together with a worn or clogged screen. Turning or replacing the hammers restores performance.
How many hammers does each Vieira mill have?
According to each model's specifications:
- MCS 280 and MCS 350: 30 hammers
- MCD 530 and MCD 680B: 54 hammers
- MCD 680A: 72 hammers
- MCD 950: 96 hammers
See all the data on our mills.
Do you make hammers for other manufacturers' mills?
Yes. We make hammers for any hammer mill model, including mills from other manufacturers. Fill in the dimensions of the technical drawing on this page and send them on WhatsApp for a quote.