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M821 CB BUFFER PROTECTION DEVICE
Classification:
The unique buffering technology could control the acceleration to reduce the momentam and the reacting forceof belt so it could protect the belt.

Product performance
◇ The cushioning foot pad design on multiple beams effectively absorbs impact energy, performs secondary buffering, and protects the conveyor belt
◇ Adjustable groove angle (20-65) to ensure the cooperation with the conveyor belt
◇ Double-side sliding-out design on both sides, convenient for fast and safe maintenance and installation work
◇ Anti-movement card mark can prevent the conveyor belt from driving the slide bar to move even when the bolt is loose
◇ Long service life and reusable, greatly reducing costs and improving benefits
◇ No contact between the conveyor belt and the protection strip when it is empty

TECHNICAL PARAMETERS
| Ambient temperature | -40℃~80℃ | Chemical fastness | PH2-12 |
| Relative humidity | 60%-70% | Tensile strength | >25N/mm2 |
| Elongation | 350%以上 | Impact strengh | >10KJ/m2 |
| Extremely high abrasive resistance | 6.6 times of common alloy steel and 27.3 times of stainless steel. | Long service life | For the low content of the unsaturated gene in the molecular chain,it could ensure the fatigue resistance is greater than 500000 times. |
APPLICATION
◇ Used for the exploitation of coal and hard rock, the coal-fired powerplant, the loading equipment and the converging operation.
◇ Used for bearing the impact force which is generated by the droppingmaterial in the transfer point of belt conveyor.
◇ Used in the other parts of belt conveyor which come under the impactforce of the material.
◇ Used for supporting the splitting part of belt conveyor.
SCOPE OF APPLICATION
◇ Coal and hard rock mining, coal-fired power plants, load equipment and aggregation operations
THE COMPARISON TABLE OF M821 AND BUFFERING ROLLER
| Name | To the belt | Safety performance | Price | Service life | lnstallation and maintenance | Labour cost | Cost performance |
| Buffering roller | Large | Accident prone | Average | Short | Average | High | Low |
| M821 Protection bed of dropping material | No | Safe | High | Long | No | Low | High |
M821 CB BUFFER PROTECTION DEVICE SELECTION

| Product code | Product specification | WH(kg ·m) | Length |
| Light type | 30-12 | 0-30 | 1200 |
| Light type | 30-15 | 0-30 | 1500 |
| Medium type | 100-12 | 30-100 | 1200 |
| Medium type | 100-15 | 30-100 | 1500 |
| Heavy type | 200-12 | 100-200 | 1200 |
| Extra-heavy type | 420-12 | 200-420 | 1200 |
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