Pendulum Feeders

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Product Details

Pendulum Feeder (Swing Feeder)

The Pendulum Feeder is a classic reciprocating feeder designed for feeding granular and small lumpy materials (< 50mm) from storage bins. It uses a swinging bottom plate (sector gate) to discharge material intermittently.

Known for its durability and simplicity, it is the standard choice for feeding Ball Mills and Belt Conveyors in small-to-medium concentrators.

Working Principle: Reciprocating Swing

Mechanically pushing material out using an eccentric drive.

Drive

The motor drives a worm gear reducer. An Eccentric Wheel is attached to the reducer output shaft, converting rotation into linear motion.

Swing

The connecting rod pulls and pushes the Sector Gate (bottom plate) under the bin discharge, causing it to swing back and forth like a pendulum.

Discharge

Material flows out during the forward swing and stops during the backward swing. This intermittent action prevents clogging and bridging in the bin.

Pendulum Feeder Structure

Technical Choice: Pendulum vs. Vibrating vs. Disc Feeder

Which feeder is best for secondary feeding?

Feature	Pendulum Feeder	Vibrating Feeder	Disc Feeder
Material Size	Small Lumps (< 50mm).	Any Size.	Fine Powder (< 20mm).
Moisture Tolerance	Good (Mechanical push).	Poor (Gets sticky).	Good.
Flow Type	Pulsating (Intermittent).	Continuous.	Continuous & Precise.
Wear Parts	Sector Plate (Low wear).	Liner Plate.	Scraper & Disc.

Core Advantages

1. Robust & Durable

Simple mechanical structure with worm gear reducer. It withstands harsh environments and requires very little maintenance compared to electromagnetic feeders.

2. Adjustable Feed Rate

The feed capacity can be adjusted by changing the Eccentricity of the eccentric wheel, which changes the swing stroke length.

3. Handles Wet Ore

The powerful swinging motion can dislodge sticky or wet ores that might block a vibrating feeder or funnel.

Typical Applications

● Ball Mill Feeding:
Feeding crushed ore (< 25mm) from the fine ore bin to the Ball Mill.
● Conveyor Feeding:
Loading bulk material onto a belt conveyor or bucket elevator uniformly.
● Chemical Industry:
Feeding non-sticky granules, coal, or fertilizer.
● Small Plants:
Ideal for small-scale gold/copper plants where simplicity and low cost are priorities.

Technical Parameters

Model (Size mm)	Feed Size (mm)	Stroke (mm)	Speed (times/min)	Capacity (t/h)	Power (kW)
300 × 300	< 35	0 - 90	68	2 - 5	1.5
400 × 400	< 35	0 - 170	47	3 - 8	2.2
600 × 600	< 50	0 - 206	45.5	7 - 12	3.0
750 × 750	< 65	50 - 200	35	10 - 18	4.0

Pendulum Feeder in Stock

Frequently Asked Questions (FAQ)

Q: Can I use it for large rocks?

A: No. It is designed for small lumps (< 50mm). For large rocks (> 300mm), you should use a Chute Feeder or Vibrating Grizzly Feeder.

Q: Is the feed continuous?

A: Strictly speaking, no. It is intermittent (pulsating) because of the pendulum motion. However, at higher speeds (45 strokes/min), the flow is effectively continuous for ball mills.

Q: Does it leak fine powder?

A: It is not suitable for dry, fluid-like fine powder (like cement), which will flood through the gap. It works best for granular ore, coal, or slightly damp material.

Simple & Reliable Feeding

The cost-effective choice for secondary crushing and grinding circuits.
Contact us for model selection and spare parts.

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