Protector Roll Feeder
- Even, uniform feed distribution
- Integrated drum magnet
- Self-cleaning screen
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From grain to feed
Hammer Mill 670
The Ottevanger Hammer Mill 670 delivers efficient, consistent grinding for feed production, down to about 200 microns depending on rotor speed and screen. It features dual rotation, a product guide valve, breaker plates, and rupture discs. An optional rotary feeder evens out feed and the product exits the chamber immediately for high efficiency.
- Dual direction of rotation for balanced wear
- Screen change without stopping the mill
- Heavy base frame with shock absorbers
Performance & Applications
Overview
Key benefits
Discover the key benefits of the Hammer Mill 670, designed for efficient, reliable grinding with minimal downtime.
- Fine grinding to approx. 200 µm depending on screen and speed
- Asymmetrical grinding with cast-iron breaker plates for strong impact and long screen life
- Electro-pneumatic product guide valve for safe, repeatable change-over
- Large inspection doors for fast cleaning and service access
- Fully enclosed roll feeder with self-cleaning magnet and stone trap for protection and uniform feed
- Screen changing without stopping the mill to shorten change-overs
- Heavy welded construction and balanced rotor for stable operation and long service life.
Available executions
All machines can be customised. The Hammer Mill 670 can be supplied with options and sizes to match required capacity and product.
- Automatic frequency-controlled rotary feeder
- Fully enclosed roll feeder with automatic self-cleaning magnet and stone trap
- Choice of drive powers and screen surface areas (per model size)
- Left or right service orientation and discharge arrangements (project-specific)
Downloads
Technical Datasheet
Download
Reliable by design
Equipment
Roller Mill
- Dual-rotation feeder with bypass
- Precise gap control to 0.01 mm
- Riffled rollers with differential speeds
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Roll Feeder
- Uniform feed for stable loading
- Magnet with auto-cleaning catcher
- Frequency-controlled feed roller
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Your questions answered
FAQ
Depending on rotor speed and selected screen, particle size can be reduced to around 200 microns.
Reversing the rotation balances hammer and screen wear, helping maintain grinding quality and extending component life.
Yes. The design allows screen changing without stopping, reducing downtime during recipe change-overs.
An automatic frequency-controlled rotary feeder can be fitted to ensure uniform distribution across the grinding width; a fully enclosed roll feeder with self-cleaning magnet and stone trap is also available.
A heavy base frame with shock absorbers and a precisely balanced rotor provide stable, low-vibration operation and long service life.
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