Characteristic	Description
Product name	Double-sided sand maker (double-sided cube, from Novin Sand Maker)
Origin and manufacturer	Compatible with secondary lines of the Cobit, inlet <15 cm, outlet 0-6 mm (70% sand)
Material and alloy	Rotor/Hammer: Manganese alloy steel (SAE 8620/MO40, double edge); Anvil/Liner: Ni-Hard or Manganese cast iron; Body: ST52 (10-12 mm thick)
Difficulty	HB 200-550 (hammer/liner); Rockwell C 58-62 (durable edges)
Operating temperature	Maximum 100-150°C (friction heat resistant; suitable for wet load up to 10%)
Standard dimensions	Length: 2.5-3 meters; Width: 1.6-2 meters; Height: 2-2.5 meters (4/6 hammer: smaller)
Approximate weight	10-15 tons (4 hammers: 10 tons; 6 hammers: 12-15 tons)
Production capacity	50-80 tons/hour (4 hammers: 50-60; 6 hammers: 70-80; output 70% 0-6 mm, 25% pea, 5% return)
Engine power	75-110 kW (4 hammers: 75 kW; 6 hammers: 90-110 kW; 3-phase, 1000 rpm)
Rotor speed	900-1500 rpm (adjustable; bi-directional to reduce wear)
Surface and tolerance	Surface finish: Ra 1.6-3.2 μm (rotor); Dimensional tolerance: ±0.03 mm; Hammer clearance: 0.5-1 mm
Abrasion resistance	High (30% longer life with double-edged hammer; suitable for Mohs 3-6, low wear in wet load)
Thermal resistance	Excellent; no change at 150°C (air/oil cooled rotor)
Processing type	Casting/Welding (Manganese Ingot Hammer) + Heat Treated; 4/6 Hammers, Hydraulic/Simple Jack; Manual/Hydro Anvil Adjustment

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Section	Details
General explanation	The double-rotor sand maker is an advanced machine for producing artificial sand with two opposing rotors that convert materials into fine and uniform particles through impact and abrasion. Its double-sided design allows simultaneous crushing from both sides and offers high efficiency in material production lines.
Technical specifications	– Production capacity: 100-300 tons per hour (depending on input material size and settings) – Motor power: 150-250 kW (two independent motors for each rotor) – Rotor dimensions: diameter 1.5-2 meters, length 2-3 meters (can be customized) – Input material size: maximum 50-80 mm – Rotor material: wear-resistant manganese steel with Hardox coating
Benefits and uses	– Advantages: High efficiency (up to 30% more than single-rotor models), reduced energy consumption, production of materials with ideal cubic shape, long durability against abrasion and impact, easy installation and low-cost maintenance – Applications: Production of sand and gravel for ready-mixed concrete, asphalt, construction industries, stone quarries and river material processing lines
Installation and maintenance	Installation on concrete or metal base with automatic lubrication system; periodic inspection of rotors every 1000 hours of operation to replace coatings; compatible with PLC automation systems for precise control.
Warranty and support	12-month performance warranty; after-sales service including operator training, spare parts supply, and technical advice by the NovinCSM team.

Double-sided sand making machine applications

Main: Secondary crushing of soft/medium rocks to sharp sand (0-6 mm, 70% output), suitable for concrete/asphalt with <5% return.
Industries: Lime/clay mines, sand/gravel production, cement, road construction (5-15 cm crushing to <6 mm).
Types: 4 hammers (low capacity), 6 hammers (high), jacked (hydraulic for easy adjustment).

Advantages of double-sided sand making machine

Two-way (alternate use of both sides, 30% less wear); sharp/broken output for better adhesion of concrete.
Wet load OK (unlike rock and rock); easy adjustment of anvil, parts available/cheap.
High capacity compared to rabbit (60 vs 25 t/h); economical for medium-sized mines.
Iranian production with 6-12 month warranty, 1 day installation.

Disadvantages of a double-sided sand maker

High wear on hard rocks (Mohs >6; need to replace hammer every 3-6 months).
Sensitive manual/hydraulic adjustment (irregular output if overload); heavy weight (crane carrying).
5% return (requires screen); sensitive to moisture >10% without dryer.

Installation and maintenance tips for the double-sided sand maker

Installation: on a concrete base, connected to a feeder/screen; levelling ±0.05 mm (1 day). Hydro jack for export/adjustment.
Maintenance: hammer/anvil inspection (every 200 hours), rotor lubrication; replace hammer edge >5 mm. Avoid a large load >15 cm.
Transportation: maximum 15 tons for trailer (1 unit), 10-ton crane.