Pendulum Feeder for Ball Mill & Mineral Processing
What is a Pendulum Feeder?
A pendulum feeder is a highly reliable, mechanical feeding device used to continuously and evenly transfer bulk materials from an ore bin to downstream equipment. Unlike vibrating feeders that rely on high-frequency vibration, this machine uses a mechanical eccentric wheel to create a gentle swinging motion. Therefore, it is particularly suitable for feeding small lump materials. It is widely used in metallurgy, coal mining, mineral processing, building materials, and chemical industries. Most importantly, it is highly regarded as the ideal feeding equipment for ball mills and belt conveyors, ensuring a stable and continuous feed rate.
Working Principle: Mechanical Swinging for Uniform Feeding
The pendulum feeder is typically installed directly under the discharge port of an ore bin, ensuring material falls naturally into the feeding box.
Power Transmission: When working, the electric motor drives a worm gear reducer through a coupling.
Pendulum Motion: An eccentric wheel is mounted on the output shaft of the reducer. This eccentric wheel drives the bottom plate of the feeding box to move back and forth (reciprocate).
Adjustable Feeding Capacity: The feeding capacity can be precisely controlled in two ways:
By adjusting the stroke: You can adjust the eccentric distance on the eccentric wheel to change the stroke length of the swing.
By adjusting the speed: By using a variable-speed motor, you can change the swinging frequency to control the feeding rate.
Technical Parameters
| Model | Entrance | Exit | Frequency | Max Particle | Capacity | Power |
| Size mm | Size mm | Size(mm) | (t/h) | (kw) | ||
| 400*400 | 400*400 | 400*50-150 | 74 | 35 | 12 | 1.5 |
| 600*600 | 600*600 | 600*50-150 | 45.5 | 50 | 25 | 1.5 |
Key Features & Advantages
Our pendulum feeder is built for harsh mineral processing environments, offering several distinct advantages:
Simple & Reliable Structure: Lightweight, compact, and easy to install and maintain. It requires minimal floor space.
Smooth & Stable Operation: The mechanical design ensures stable performance with a long service life and low failure rate.
Flexible Capacity Adjustment: Easily adjust the vibration force (stroke) and speed to control the flow rate at any time, ensuring a stable and uniform feed.
Low Noise & Energy Saving: Powered by a reliable motor, it operates with low noise, low power consumption, and excellent regulation performance.
No Material Surging: Prevents the sudden, uncontrolled flooding (冲料) of materials, which is crucial for maintaining the correct pulp density in the ball mill.
Frequently Asked Questions
Q: What is the main application of a pendulum feeder?
A: It is primarily used for continuous and uniform feeding of small lump materials from an ore bin to a ball mill, conveyor belt, or other processing equipment.
Q: How do I adjust the feeding capacity?
A: You can adjust the feeding capacity in two ways: by changing the eccentric distance on the eccentric wheel (adjusting the stroke) or by changing the motor speed to alter the swinging frequency.
Q: Does it cause material surging?
A: No. The pendulum feeder provides a uniform, controlled mechanical swing, completely eliminating material surging and ensuring stable downstream processing.
Q: Is it easy to maintain?
A: Yes. The machine features a simple structure, is lightweight, and requires minimal maintenance. The motor and reducer are easily accessible.
Why Choose Hengcheng for Your Feeding Equipment?
With over 25 years of experience in mineral processing equipment manufacturing, we design and manufacture reliable, heavy-duty feeding equipment for global mining operations. Furthermore, we provide a full package of services—from engineering consultation and equipment selection to on-site installation, commissioning, and personal training. Therefore, you can rely on us for a stable and efficient feeding solution for your plant.
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