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China VSI Vertical Shaft Impact Crusher - Superior Crushing Power from Leading Suppliers and Factory
Working Principle
In Kemai VSI series vertical shaft impact crusher, material of high speed is crushed by self-broken mutual friction. This type of impact crusher can not only be used for crushing but also for shaping of stones.
According to feeding method, the working of vertical shaft impact crusher can be divided into central feeding and central with cascade feeding; while the crushing method can be divided into “rock on rock’ and “rock on iron” according to material compressive strength. Therefore, there are four working forms: central with cascade feeding “rock on rock” and rock on iron”; central feeding “rock on rock” and rock on iron”.
Daily maintenance of VSI series vertical shaft impact crusher
- There should be special person responsible for the machine. Operators should be trained before operation, and also understand technical performance and familiar with the rules.
- Thin oil station use 35# bearing oil, oil amount is 150-190L. Change oil in 200hours first time, and then change oil every 1000 hours. When change oil, open the oil pipe, clean and dry it, change damaged seal mat.
- Driving V belt tensioning is moderate, make sure V belt strain evenly, motors in two sides are imbalanced, the electricity current is not more than 15A.
- Check hydraulic system frequently, maintain immediately if any abnormal conditions.
- Add calcium base grease to seal ring under bearing chamber regularly.
- Open the bearing tube and clean in 1000 hour’s normal running first time.
Technical parameters of VSI series vertical shaft impact crusher
| Model | VSI7611 | VSI8518 | VSI9526 | VSI1140 | |
|---|---|---|---|---|---|
| Capacity (t/h) | Central feeding with circular cascade feeding | 120-180 | 200-260 | 300-380 | 450-520 |
| Fully central feeding | 60-90 | 100-130 | 150-190 | 225-260 | |
| Max. feeding size (mm) | Soft material | < 35 | < 40 | < 45 | < 50 |
| Hard material | < 30 | < 35 | < 40 | < 45 | |
| Rotation speed (r/min) | 1700-1890 | 1520-1690 | 1360-1510 | 1180-1310 | |
| Model of Motor | Y250M-4 | Y280M-4 | Y315M-4 | Y315L2-4 | |
| Double motor power (KW) | 2×55 | 2×90 | 2×132 | 2×200 | |
| Overall dimension (L×W×H) (mm) | 3600×2248×2533 | 4378×2350×2667 | 4640×2650×2800 | 5570×2900×3000 | |
| Weight (t) | 10 | 12 | 16 | 25.6 | |
| Power supply | AC380V,50Hz | ||||
| Lubrication Hydraulic Pressure station | Rate of flow (L/min) | 6 | |||
| Double oil pumps motor's power (KW) | 2×0.31 | ||||
| Safety Assurance | Double oil pumps assure enough oil supply; Switch off automatically without oil flow or oil pressure. Lower the temperature with cool water in summer raise the temperature with motor in winter. | ||||
| Overall dimension (L×W×H) (mm) | 820×520×1270 | ||||
| Power of oil Tank Heater (kW) | 2 | ||||
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Frequently Asked Questions
What is the working principle of the Kemai VSI series vertical shaft impact crusher?
The crusher operates by accelerating material at high speeds so that it is crushed through self-broken mutual friction. This method is highly effective for both the crushing and shaping of stones.
What are the feeding and crushing methods available for this VSI crusher?
The feeding methods include central feeding and central with cascade feeding. The crushing methods are divided into "rock on rock" and "rock on iron," depending on the compressive strength of the material. This yields four distinct working configurations.
What are the lubrication requirements for the VSI series impact crusher?
The thin oil station requires 35# bearing oil with a capacity of 150-190L. The oil should be changed initially after 200 hours of operation, and subsequently every 1000 hours. Additionally, calcium base grease must be regularly added to the seal ring under the bearing chamber.
What safety features are integrated into the lubrication hydraulic pressure station?
The station utilizes double oil pumps to guarantee sufficient oil supply and features an automatic switch-off safety mechanism in case of no oil flow or pressure. It also regulates temperature using cooling water in summer and a motor heater in winter.
What is the maximum feeding size for the VSI series models?
The maximum feeding size depends on the material hardness and model. For soft materials, the feeding limit ranges from < 35 mm to < 50 mm. For hard materials, the limit ranges from < 30 mm to < 45 mm.