# Hammer mill MCD 680B (30 hp)

URL: https://moinhosvieira.com.br/en/hammer-mill-vieira-mcd-680b-30-hp/  
Updated on: 2026-11-04  
Other languages: Español: https://moinhosvieira.com.br/es/molino-de-martillos-vieira-mcd-680b-30hp/ · Português: https://moinhosvieira.com.br/moinho-de-martelo-vieira-mcd-680b-30-cv/

> The Double Centrifugal Mill – MCD 680B (30 hp).

## Specifications

| Item | Value |
| --- | --- |
| Series | MCD Series · Double Centrifugal Mill |
| Motor power | 30 or 40 hp |
| Production capacity | 275 to 3,000 kg/h |
| Screen hole size (capacity table) | 0.3 – 6 mm |
| Particle size | up to 100 MESH |
| Shaft speed | 3,500 rpm |
| Weight with motor | 750 kg |
| Number of hammers | 54 |
| Working area (without cyclone) | 2.5 m² |
| Full installation length | 5 m |
| Grinding boxes | 2 (double grinding) |
| Power supply | Three-phase |
| Starter | Not included · soft-starter recommended |

## Reference capacity (kg/h)

Reference: degermed corn (canjica)*

| Model | Screen 0.3 mm | Screen 0.7 mm | Screen 1.0 mm | Screen 3.0 mm | Screen 6.0 mm |
| --- | --- | --- | --- | --- | --- |
| MCD 680B | 275 | 500 | 750 | 2,000 | 3,000 |

*Grinding under ideal operating conditions. Actual capacity depends on the product, its moisture and the screen hole size. Confirm it with a grinding test.

## Frequently asked questions

### What motor power does the MCD 680B have, and when should I choose the larger motor?

The MCD 680B is sold with a 30 hp or a 40 hp motor: the frame takes either one. For fine grinding with a screen under 1.2 mm, the 30 hp motor is enough, because the limit is the grinding box, not the power; above 1.5 mm, choose the 40 hp motor. Between 1.2 and 1.5 mm, a specialist will recommend the motor.

### How much does the MCD 680B weigh and how much space does it need?

With the motor, the MCD 680B weighs 750 kg. It needs a working area of 2.5 m², not counting the cyclone. The full installation, including the cyclone and the bag filter, is 5 m long.

### Does the MCD 680B need a concrete base or anchoring to the floor?

No. Thanks to the mill's balancing, it does not need to be anchored to the floor. It must, however, stand on a solid surface free of vibration and away from machines that vibrate.

### Is the MCD 680B three-phase? Is a starter included?

Yes, the MCD 680B runs on three-phase power, and the electrical connection must be made by an industrial electrician. The starter is not included; we recommend a soft-starter.

### What comes with the MCD 680B?

The MCD 680B leaves the factory assembled, tested and adjusted, and comes with a polyethylene cyclone with tripod, a bag filter housing with filter bags and a feed hopper.

The Vieira MCD 680B Mill (30 hp) is already a medium to large industrial mill. It is very well suited to companies that need good productivity in micronized grinding, as the double centrifugal grinding system enables a better ratio of electric motor performance to final production.

## Main features

- Made from 304 stainless steel or 1020 carbon steel with white epoxy paint
- Easy to replace spare parts such as hammers, screens and impellers
- High output ratio
- Two 360° grinding boxes
- Does not need to be fixed to the ground
- Continuous suction feed
- Designed for micronizing grains, cereals and spices
- Guaranteed technical assistance and maintenance

## Required installations

- We recommend that an industrial electrician install this mill, as it is a more robust piece of equipment.
- This mill, model MCD 680B (30 hp), does not come with a starter, but we recommend using a Soft-Starter starter.
- It comes with an instruction manual in Portuguese (Printed and Digital) explaining the whole assembly and installation process.

This mill has two grinding boxes, where the product to be processed goes through pre-grinding in the first grinding box (smaller side), using a larger diameter [screens](https://moinhosvieira.com.br/en/screens-for-mills/), and through an interconnecting pipe, the pre-grinded product is automatically transported to the second grinding box (larger side), where the grinding is completed, reaching the required granulometric standard. Successfully used in the food industry for various products such as Guaraná, Fubá Mimoso, Rice Flour, Cinnamon, Pepper and other spices.

## Hammer mill for micronized grinding

Successfully applied to a wide range of products: food, cosmetics and pharmaceuticals, with grinding screens with holes from Ø 0.3 mm.

- Grain, cereal and spice grinding
- Grinding of Natural Products
- Pre-mix formulation grinding
- Pharmaceutical products grinding
- Cosmetics Products Grinding
- Reprocessing Grinding

## Tailor-made solutions for every need

This mill has two grinding boxes, where the product to be processed goes through pre-grinding in the first grinding box (smaller side), using a larger diameter screen, and through an interconnecting pipe, the pre-grinded product is automatically transported to the second grinding box (larger side), where the grinding is completed, reaching the required granulometric standard.
Successfully used in the food industry for various products such as Guaraná, Fubá Mimoso, Rice Flour, Cinnamon, Pepper and other spices.