Working Principle
SC-85D Mobile VSI Sand Making Machine is a crawler-mounted vertical shaft sand making unit that utilizes a high-speed impact crushing mechanism to process various materials into fine aggregates. At its core is a vertical shaft impact (VSI) crusher, which operates by accelerating material through a rapidly spinning rotor. The material is then thrown outward at high speed against a surrounding crushing chamber, where it collides with either anvil blocks (“rock-on-steel”) or other material particles (“rock-on-rock”), effectively achieving crushing and shaping in one process.
Feed materials enter through the central feed port, with the option for dual-feed (central and peripheral). Inside the rotor, centrifugal force propels them outward at high velocity. After impact and fragmentation, the resulting aggregates pass through a screening system that separates the material into different size ranges.
SC-85D Mobile VSI Sand Making Machine offers a choice between full electric drive or a diesel-electric dual power system. It features automatic start-up and remote control capabilities, meeting the demands of complex job site conditions. The crawler-type chassis delivers strong off-road performance, allowing the equipment to move flexibly between different work locations and carry out on-site sand making operations efficiently.
Application
SC-85D Mobile VSI Sand Making Machine is specifically engineered for on-site sand making tasks, particularly in operations that demand fine-grained materials with excellent particle shape. Common application scenarios include:
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Construction Waste Recycling
Ideal for transforming waste concrete, bricks, and demolition debris into fine aggregate on demolition sites, supporting recycled concrete production or backfilling. -
Manufactured Sand Projects
Suitable for areas facing shortages of natural sand. It can process river pebbles, limestone, granite, and other raw materials to produce high-quality manufactured sand. -
Cement and Concrete Mixing Sites
Operates as a dedicated sand-making module adjacent to cement plants or batching stations, enabling on-demand production of fine aggregates while reducing transportation costs. -
Secondary Processing in Quarries
Used for refining and shaping materials already crushed by jaw or impact crushers, thereby improving final product quality and commercial value.
With its fully integrated design, the SC-85D eliminates the need for complex on-site installations and accelerates project deployment. It produces high-quality sand with adjustable fineness, making it suitable for applications such as road base layers, ready-mix concrete, and other infrastructure projects. The machine can also be paired with mobile screening units to create a complete mobile sand-making and screening system, offering higher capacity and improved automation.
Video Presentation
Product Parameter
| Project | Name | SC-85D |
| Feeding belt | Length × Width (mm) | 5000*1350 |
| Feeding height (mm) | 2800 | |
| Power (kW) | 5.5×2 | |
| Shaping machine | shaping machine | SK2400-D-SS |
| Maximum feed particle size (mm) | 100mm | |
| Adjustment range of discharge opening (mm) | 60-80 | |
| Weight of the plastic machine (t) | 11.9 | |
| Power (kW) | 250 | |
| Main belt | Length × Width (mm) | 9200*1600 |
| Discharge height (mm) | 2710 | |
| Power (kW) | 9.2*2 | |
| Complete machine | Overall weight (t) | 37.8 |
| Machine processing capacity (t/h) | 80-260 | |
| Total work done in crushing (kW) | 279.4 | |
| Working dimensions (length, width, height/m) | 13750*3350*4350 | |
| Transportation dimensions (length, width, height/m) | 14750×3350×3850 |
More Details
1. Single Power Version & Dual Power Version
SC-85D Mobile VSI Sand Making Machine is available in two versions: Single Power and Dual Power.
- Single Power Version: Requires an external power supply when crushing stones, suitable for job sites with stable electricity.
- Dual Power Version: More versatile. When a stable power supply is not available, the machine can operate directly with diesel.
2. Engine
- Standard Configuration: Equipped with a branded engine meeting China National III emission standard.
- Optional Upgrades: Can be upgraded to China Stage IV, EPA Tier 4, or Euro V engines to comply with local environmental regulations.
3. Delivery Terms
| Item | Terms |
|---|---|
| Delivery Time | Approx. 20–25 working days after down payment |
| Warranty | 12 months |
| Spare Parts | A full set of wear parts will be provided with the machine, and long-term supply is guaranteed |
| Service & Support |
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FAQ
Q1: What is the maximum feed size for the SC-85D VSI sand making machine?
A1: The SC-85D Mobile VSI Sand Making Machine accepts feed sizes up to 50mm (maximum 100mm). This means material should be pre-crushed by a jaw crusher and/or cone crusher before entering the SC-85D. The VSI principle then transforms these smaller particles into high-quality manufactured sand with excellent particle shape.
Q2: What is the difference between “rock-on-steel” and “rock-on-rock” crushing?
A2: “Rock-on-steel” uses replaceable anvils/impact blocks that material strikes against — ideal for softer materials and produces a more consistent particle size. “Rock-on-rock” uses a material lining chamber where particles collide with each other — better for hard rocks like granite and basalt, with lower wear part costs. The SC-85D supports both configurations depending on your material.
Q3: Can the SC-85D be used for construction waste recycling?
A3: While the SC-85D can process construction waste, it is primarily designed for producing high-quality manufactured sand from hard rock (granite, basalt, river pebbles). For construction waste recycling, we recommend the SF-380D impact crusher with its built-in iron remover. The SC-85D is best used as a final-stage sand-making unit in a complete crushing circuit.
Q4: What capacity can I expect from the SC-85D?
A4: The SC-85D has a capacity range of 80-260 TPH. Actual throughput depends on the feed material hardness, feed size, desired sand fineness, and whether you use central feed or dual feed (central + peripheral). For optimal sand quality, we recommend operating at 60-80% of maximum capacity.
Q5: Does the SC-85D support remote control operation?
A5: Yes. The SC-85D features automatic start-up and remote control capabilities. Operators can monitor and adjust key parameters from a safe distance, improving safety and efficiency. The intelligent control system provides real-time monitoring of rotor speed, material flow, and overall machine health.
