Heavy Duty Vibrating Grizzly Feeder
Combined feeding and scalping · Steel grizzly bars · Primary crusher protection
Vibrating grizzly feeder · combined controlled feed rate and fines bypass
Core specifications
Pan width1200 – 2400 mm
Grizzly bar spacing50 – 150 mm (application dependent)
Capacity150 – 1200 t/h
Motor power15 – 55 kW
PositionDirectly beneath primary crusher hopper
Heavy Duty Vibrating Grizzly Feeder – Overview
The SMC heavy duty vibrating grizzly feeder combines controlled material feeding and coarse scalping into a single machine positioned directly beneath a primary crusher's feed hopper, vibrating raw run-of-mine material forward at a controlled rate while a grizzly bar section allows fine, already-sized material to bypass the crusher entirely.
The grizzly bar section, typically positioned at the feeder's discharge end, consists of heavy steel bars spaced to allow fine material below the crusher's optimal feed size to fall through directly onto a bypass conveyor, reducing unnecessary wear on the primary crusher and increasing overall circuit capacity by not forcing already-suitably-sized material through the crusher.
The vibrating pan section ahead of the grizzly bars controls the rate at which raw material advances from the feed hopper toward the crusher, smoothing out the naturally uneven flow of material dumped by loaders or trucks into a steady, controllable feed rate that helps the primary crusher operate at consistent load rather than surging and starving.
Because this feeder sits directly beneath the primary crusher feed hopper, it must absorb the same severe impact loading as a scalping screen — large boulders dropped from significant height — requiring a reinforced pan structure, heavy-duty exciter, and robust isolation spring system engineered specifically for this demanding location in the crushing circuit.
Variable speed control, typically via a variable frequency drive on the feeder's motor, allows operators to adjust feed rate to match the primary crusher's actual processing capacity, preventing overfeeding that could stall the crusher while maximizing throughput during periods when the crusher can accept material faster.
The grizzly bar spacing is selected based on the primary crusher's optimal feed size range, with wider spacing removing more material via bypass (reducing crusher load but potentially leaving some crusher-appropriate material in the bypass stream) and narrower spacing sending more material through the crusher.
Typical applications include the critical feeder position directly beneath primary jaw or gyratory crusher hoppers in quarries and mines, where combining feed rate control with fine-material bypass in one machine simplifies plant layout compared to separate feeding and scalping equipment.
For the demanding primary crusher feeding position, the SMC heavy duty vibrating grizzly feeder's combined feeding and scalping function, backed by reinforced construction, provides reliable performance where standard feeding equipment would be overwhelmed.
Sanming Mining - Raising Industry Standards
Company Profile
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Sanming is an international Mining Machinery Equipment Supplier that integrates R&D, Manufacturing, and Sales of Rock Crushing&Screening equipment, as well as Sand Making, Sand Washing, and Grinding equipment. Sanming has passed ISO9001 quality system certification.
As
China Heavy Duty Vibrating Grizzly Feeder Manufacturers and
Wholesale Heavy Duty Vibrating Grizzly Feeder Factory, our equipments are widely used in the fields of Sand and Gravel Aggregate processing, Mining, and Construction Waste Resource utilization.
"Sanming" brand equipments are not only distributed in nearly 30 provinces in China, but also exported in large quantities to multiple countries in Central Asia, the Middle East, South America and Africa, and has received unanimous praise from users. Our main production base is located in Qidong (Shanghai Pudong New Area Industrial Park). We warmly welcome your visit to our factory.
- 200+
Number Of Products
- 20,000
Factory Area
- 500w
Annual Sales
- 40%
Annual Export Ratio
How It Works – Working Principle
Hopper Feed Intake
Receives raw run-of-mine material directly from the primary crusher hopper.
Controlled Vibrating Advance
Vibrating pan smooths uneven dump flow into a steady feed rate.
Grizzly Bar Bypass
Fine, already-sized material falls through bars, bypassing the crusher.
Variable Speed Control
VFD adjusts feed rate to match the crusher's actual processing capacity.
Applications & Industries
Primary Jaw Crusher Feeding
Controlling and scalping feed ahead of primary jaw crushers.
Primary Gyratory Crusher Feeding
Same combined function ahead of gyratory crusher installations.
Quarry & Mine Circuit Entry Point
The critical first-stage feeding position in a crushing circuit.
Layout-Simplifying Installations
Combining feed control and scalping in one machine, one location.
Suitable For Various Mining Applications
Equipment Production Line
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Selection Guide – Choose the Right Model
VGF-1236
Feed: 1200mm pan · Capacity: 150–400 t/h
Compact feeder for smaller primary crusher installations.
VGF-1642
Feed: 1600mm pan · Capacity: 300–650 t/h
Balanced model for standard-scale primary crusher feeding.
VGF-1848
Feed: 1800mm pan · Capacity: 500–900 t/h
Higher-capacity option for larger quarry and mine circuits.
VGF-2454
Feed: 2400mm pan · Capacity: 800–1200 t/h
Top-capacity model for major primary crushing operations.
Comparison – Vibrating Grizzly Feeder vs Apron Feeder
Key Performance Indicators
Combined scalping capability · Extreme heavy-boulder durability · Purchase cost-effectiveness (relative)
Vibrating Grizzly Feeder Advantage
- Combines feeding and scalping in one machine
- Simpler mechanism than chain-driven apron feeders
- Lower cost for most primary feeding applications
Apron Feeder
- Better suited to extremely heavy, sharp material
- No vibration-related fatigue concerns
- Preferred for the largest boulder sizes
Key Components – Built to Last
Reinforced Vibrating Pan
Absorbs severe impact loading from raw run-of-mine material.
Grizzly Bar Section
Heavy steel bars sized to bypass fine, already-suitable material.
Heavy-Duty Exciter
Drives the controlled vibrating advance of material along the pan.
Reinforced Isolation Springs
Rated for the severe impact environment beneath a primary hopper.
Variable Frequency Drive
Enables feed rate adjustment matched to crusher processing capacity.
Impact-Resistant Liner Plates
Protect the pan surface from direct boulder impact wear.
Installation & Commissioning
Massive Foundation
Reinforced foundation designed for severe impact loading beneath the hopper.
Grizzly Bar Spacing Selection
Install bars spaced for the primary crusher's optimal feed range.
VFD Integration
Connect variable frequency drive for feed rate control from the plant control room.
Commissioning
No-load run to verify vibration pattern, then gradual raw feed introduction.
Maintenance Schedule & Wear Trend
Wear/Component Life Over Time (Relative)
Inspect grizzly bars and pan liner plates frequently given the severe impact environment at this critical circuit position.
Daily Checks
- Grizzly bar condition and spacing
- Pan liner wear
- Exciter bearing temperature
Weekly Checks
- Inspect isolation springs for fatigue
- Check bypass conveyor alignment
- Inspect pan structure for impact damage
Monthly
- Grease exciter bearings
- Inspect VFD and control system
- Full structural inspection of the pan
Yearly
- Full exciter bearing inspection
- Replace grizzly bars and liners as needed
- Complete structural fatigue inspection
Quality You Can Trust
Why choose Sanming
Sanming is a professional manufacturer of R&D, manufacturing and sales
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01. Design & Customization
The company has an experienced and highly skilled R&D team, which is capable of providing customers with customized equipment solutions to meet the needs of different customers
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02. Advanced Facilities
The company has invested in and introduced a series of advanced production equipment, such as high-precision CNC machine tools, automated welding equipment, etc. These equipment features high efficiency, precision and stability, which can ensure the quality of products and production efficiency
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03. Reliable Quality
The company always gives top priority to product quality. It uses high-quality raw materials and components, and through strict screening and inspection, it ensures the quality and performance of products. At the same time, the company also conducts long-term tracking and services for products, promptly solves the problems encountered by customers during the use process, and improves customer satisfaction
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04. Service Integrity
The company has established a complete after-sales service system to provide customers with comprehensive services. This includes equipment installation and debugging, operation training, maintenance, technical consultation, etc., to ensure that customers can use the equipment smoothly and maximize its benefits
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05. Cost Control
The company effectively controls product costs by optimizing the production process, reducing raw material procurement costs, and improving production efficiency. On the premise of ensuring product quality, it can provide customers with competitive prices and enhance their market competitiveness
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06. Brand Influence
After years of development, the company has established a good brand image in the mining equipment manufacturing industry and has won the trust and praise of customers
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07. Convenient Transportation
The company is only 50 kilometers away from Shanghai Yangshan Port, making the transportation of goods and exports very convenient
Frequently Asked Questions (FAQ)
1. What is the function of the grizzly bar section?
Grizzly bars allow fine, already-sized material to fall through and bypass the primary crusher entirely, reducing unnecessary crusher wear and increasing overall circuit capacity.
2. How does this feeder control feed rate to the crusher?
A variable frequency drive on the feeder's motor allows the vibration rate to be adjusted, smoothing uneven dump flow into a steady, controllable feed matched to the crusher's processing capacity.
3. Why does this feeder need heavier construction than standard feeders?
It sits directly beneath the primary crusher hopper and must absorb the same severe impact loading from large dropped boulders as a scalping screen, requiring reinforced pan, exciter, and spring systems.
4. How is grizzly bar spacing selected?
Bar spacing is selected based on the primary crusher's optimal feed size range; wider spacing bypasses more material while narrower spacing sends more through the crusher.
5. What happens to material that bypasses through the grizzly bars?
Bypassed fine material typically falls onto a separate conveyor that rejoins the main product stream downstream, without needing to pass through the primary crusher.
6. How does this compare to an apron feeder for the same position?
A vibrating grizzly feeder combines feeding and scalping in a simpler, generally lower-cost mechanism, while an apron feeder is preferred for extremely heavy, sharp material or the largest boulder sizes where vibration-based equipment may be less suitable.
7. What capacity range does this feeder cover?
Capacity ranges from 150 to 1200 t/h depending on pan width and length, matched to primary crushing circuits from moderate to very large scale.
8. What causes premature wear on the vibrating pan?
Direct, repeated boulder impact is the primary wear driver; impact-resistant liner plates are used to protect the pan surface and should be inspected and replaced as they wear.
9. How is the feeder speed coordinated with the crusher?
The VFD can be integrated with the plant control system, allowing feed rate to be automatically or manually adjusted based on crusher load or downstream circuit conditions.
10. What maintenance access is provided for the grizzly bars?
Grizzly bars are typically designed for individual inspection and replacement without requiring full disassembly of the feeder structure.
11. Is this feeder suitable for both jaw and gyratory primary crushers?
Yes, it is commonly used ahead of both primary jaw and gyratory crusher installations in quarry and mining applications.
12. What warranty is offered?
A standard 12-month warranty covers manufacturing defects, with grizzly bars, liners, and springs covered separately as wear items given their exposure to severe impact.
After-Sales Support & Services
Grizzly Spacing Consultation
Guidance selecting bar spacing matched to your primary crusher's feed range.
Heavy-Duty Wear Part Supply
Grizzly bars, liners, and springs stocked for this demanding position.
Feed Rate Optimization Support
Assistance coordinating VFD settings with primary crusher capacity.
24/7 Technical Support
Ongoing assistance for primary crusher feeding operations.
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