VSI Impact Crusher Hard Stone Crushing and Shaping Equipment

The high-efficiency VSI vertical shaft impact crusher is a professional sand making and shaping machine designed for large-scale sand & aggregate projects. It offers a processing capacity of 250–800 t/h, with a maximum feed size ≤60 mm, integrating three functions: sand making, shaping, and crushing. The crusher features a deep cavity rotor design, increasing material throughput by 30% compared to conventional models. It supports dual-mode switching between "rock-on-rock" and "rock-on-iron" – the rock-on-rock mode reduces wear on wear parts when processing hard materials (e.g., basalt), while the rock-on-iron mode improves crushing efficiency for soft materials (e.g., limestone). Suitable for materials with Mohs hardness <9, including river pebbles, ore tailings, construction waste, stone chips, etc. It is widely used in highways, railways, ready-mix concrete plants, and mining industries. The finished product has a cubical particle shape, with a fineness modulus adjustable between 2.6 and 3.2, fully meeting the standards for manufactured sand and high-quality aggregates. One machine replaces two separate units (sand maker + shaping machine), saving about 25% in equipment investment, increasing overall line efficiency by 28%, and raising product added value by 18%–22%.

Deep cavity rotor design: 30% higher material throughput than conventional models; single unit capacity up to 800 t/h – supports large-scale continuous production.

Rock-on-rock / rock-on-iron dual mode: Use rock-on-rock for hard materials to reduce wear; use rock-on-iron for soft materials to increase efficiency – one machine, two modes, flexible switching.

Excellent cubical particle shape: Finished sand is well-rounded and uniform; fineness modulus adjustable 2.6–3.2 – meets high-grade concrete sand standards.

Combined wear tips: Selectively replace only worn parts; service life extended by 40%, operating cost reduced by 30%.

Damping springs + sealed lubrication: Vibration reduced by 50% – avoids structural damage; sealed dust prevention – bearing failure rate ≤0.3% per 1,000 hours.

168‑hour full-load factory test: Each machine undergoes 7 days of continuous full-load operation before delivery – ready for production upon arrival.

 

Large manufactured sand production lines: Core sand making and shaping equipment for hard rocks such as river pebbles, granite, basalt; capacity 250–800 t/h.

Highway base aggregates: Production of manufactured sand for pavement layers – particle shape and gradation strictly meet highway engineering standards.

Ready-mix concrete plants: Self-built sand making system as a supplement – replacing natural sand for C50 and above high-grade concrete.

Mine tailings utilization: Deep processing of metal and non-metal mine tailings into sand – achieving tailings volume reduction and resource reuse.

Construction waste recycling: Sand making and shaping from crushed waste concrete, bricks, etc. – producing recycled sand and aggregates.

Example: 500 t/h river pebble sand making line:

Vibrating feeder → Jaw crusher (primary crushing) → Cone crusher (secondary crushing) → Surge bin → VSI vertical shaft impact crusher (sand making & shaping) → Circular vibrating screen (classification) → 0‑3 mm manufactured sand + 3‑5 mm coarse sand + 5‑10 mm fine aggregates + closed‑circuit return of oversize

 

Pure sand making: VSI rock-on-iron mode, with powder classifier to control stone powder content – manufactured sand proportion ≥80%

Sand making + shaping: Rock-on-rock mode – produces both premium manufactured sand and shaped aggregates – higher overall added value

Wet sand making: Add sand washing & recovery unit – finished sand silt content ≤1% – meets high cleanliness requirements

 

Solution design: Based on raw material hardness, moisture content, finished sand specifications, and capacity targets, we provide VSI crusher selection calculations, sand making process design, equipment matching, and ROI analysis – delivering a complete technical solution.

Equipment manufacturing: In-house production of VSI main frame, deep cavity rotor, combined wear tips, main shaft assembly, and other core components under ISO quality system. Rotor material options: high chromium alloy or composite wear-resistant material. Support for non‑standard customization of capacity and fineness modulus.

Installation & commissioning: Our engineers go to site to guide foundation work, equipment positioning, drive alignment, no‑load and load testing until capacity, fineness modulus, and particle shape criteria are met.

Operation & maintenance outsourcing: Full lifecycle O&M services including regular inspections, rotor and wear tip wear monitoring, spare parts supply, operator training, and remote diagnostics. Optional annual maintenance contract with emergency response commitment.

At a large river pebble manufactured sand production base in Pahang, Malaysia, the customer is one of the largest building material suppliers in the region, producing over 6,000 tonnes of manufactured sand per day. The raw material is local river pebbles (Mohs hardness approx. 6.5). In 2021, a new 500 t/h manufactured sand line was built. For the core sand making stage, two VSI vertical shaft impact crushers were selected, each with a design capacity of 300 t/h. Operating in rock-on-rock mode, each unit actually achieved 310–340 t/h. The deep cavity rotor increased material throughput by about 32% compared to the customer’s existing VSI crushers. With combined wear tips, each set processes about 80,000–100,000 tonnes before partial replacement of worn blocks, reducing comprehensive operating cost by about 28% compared to one‑piece wear tips. The finished manufactured sand has a fineness modulus stable at 2.7–2.9, stone powder content controlled at 6%–8%, and well‑rounded particle shape. It has been certified by the Malaysian Public Works Department (JKR) and is used in large quantities on major projects such as the East Coast Rail Link and the East Coast Expressway. The customer reports that over three years of operation, the crusher availability has remained above 94%. The damping springs have effectively controlled plant vibration. The two lines with a total of four machines have cumulatively produced over 5.8 million tonnes of manufactured sand.

 

Technical parameters:

Model	Feed size (mm)	Processing capacity (t/h)
DLVSI1140	<50	250-340
DLVSI1145	<55	280-400
DLVSI1150	<55	300-440
DLVSI1263	<60	400-580
DLVSI1370RG	<60	700
DLVSI1380RG	<60	800
DLVSI20100R	<200	700-1000

 

Q1: How to choose between "rock-on-rock" and "rock-on-iron" modes on the VSI crusher? Which material is suitable for which mode?

A: The choice depends on material hardness and product requirements. In rock-on-rock mode, materials collide with each other inside the crushing chamber; metal wear parts are not in direct contact with the material, resulting in extremely low wear part consumption. This mode is suitable for sand making and shaping of high‑hardness materials such as basalt, granite, and river pebbles (Mohs hardness 6–9). In rock-on-iron mode, materials are thrown at high speed from the rotor against anvils, achieving higher crushing efficiency and throughput. This mode is suitable for medium‑low hardness materials such as limestone and dolomite. If your material is hard and you want low wear cost, choose rock-on-rock. If you need high capacity and the material is of medium hardness, choose rock-on-iron. The two modes can be switched on the same machine for flexible adaptation to different conditions.

Q2: Can manufactured sand produced by a VSI crusher fully replace natural river sand for C50 and above high‑grade concrete?

A: Absolutely. Manufactured sand from a VSI crusher has a cubical particle shape, adjustable fineness modulus (2.6–3.2), and consistent, stable gradation. These characteristics are more favorable for high‑grade concrete mix design than natural river sand, which often has wide fluctuations in fineness modulus and uncontrolled silt content. The East Coast Rail Link project in Malaysia uses manufactured sand from VSI crushers to produce C50–C60 high‑grade concrete, and it has been certified by JKR as fully compliant. The key points are: control the fineness modulus between 2.6 and 2.8, and use a powder classifier to keep stone powder content at 5%–7%. This ensures optimal workability, strength, and durability of the concrete.

Q3: How reliable is the VSI vertical shaft impact crusher for 24/7 continuous production? Is the failure rate high?

A: One of the core advantages of the VSI crusher is its low‑failure design. The combined wear tips allow partial replacement, avoiding the waste of scrapping an entire one‑piece wear tip, extending service life by 40%. The damping springs reduce equipment vibration by 50%, effectively preventing structural damage and bolt loosening caused by long‑term vibration. The sealed lubrication system prevents dust from entering the bearings – measured bearing failure rate ≤0.3% per 1,000 hours. Additionally, every machine undergoes a 168‑hour (7 days) full‑load continuous test before delivery, so it is ready for production on arrival. Operating data from four machines over three years at the Malaysian project shows an average availability above 94%, with very few unplanned stoppages – fully meeting the requirements of 24/7 sand making operations.

 

The era of manufactured sand fully replacing natural sand has arrived. Choosing the right sand making machine is choosing the ROI of your entire line. Our engineering team can provide free raw material testing, process design, and complete equipment selection based on your raw material characteristics, capacity targets, and finished sand specifications. Contact us for VSI vertical shaft impact crusher technical specifications, test data, and the latest quotation. A customized large‑scale sand making line solution will be delivered within 24 hours.