Roller Sand Mixer

Efficiency Roller Type Green Sand Mixers (Sand Mullers)

Traditional Reliability | Superior Clay Activation | Factory-Direct Durability

Roller Sand Mixers (S11 Series) are the backbone of high-quality green sand preparation. Designed for the rigorous demands of iron, steel, and non-ferrous foundries, our mullers combine high-pressure rolling with efficient scraping to ensure that bentonite and water are perfectly “kneaded” into the sand grains. The result is a molding sand with high green strength, excellent permeability, and superior flowability.

Roller sand mixer is a type of machine used in foundries to mix molding sand with binders, water, and other additives to prepare it for use in metal casting. This mixer employs heavy rollers to compress, grind, and mix the sand, ensuring a homogenous mixture with the desired properties for creating molds and cores.

Technical Specifications

Type	Plate diameter(mm)	Plus the material(kg/s)	Productivity (t/h)	Motor power(kw)	Spindle speed(rpm)	Single wheel pressure(N)	ApproximateWeight(kg)
S1105	500	20	0.1-0.2	1.5	35	0-10	80
S1106	600	40	0.3-0.5	2.2	35	0-10	100
S1108	800	80	0.8-1.2	3	35	0-60	350
S1110	1000	110	1.5-2.5	4	35	0-1100	900
S111A	1230	150	2-4	5.5	41	0-1100	1020
S1112	1225	150	3-5	4-6	35	0-1100	1237
S1113	1400	260	4-7	5-6	35	0-1200	1400
S1115	1500	350	5-6	11	25	0-1200	1900
S1116	1600	400	6-7	11	25	0-1200	2000
S114C	1820	500	7-8	15	25	0-5000	2600
S114D	1820	500	7-8	15	25	0-5000	2600
S1118C	1800	650	15	22	36	0-6000	5000
S1120J	2000	800	15-18	22	34	0-8000	5000
S1120D	2000	900	20	37	34	0-9000	6500
S1122	2200	1300	25	37	34	0-9000	7800
S1124	2400	1500	30	45	34	0-9000	8000

Batch Typr Roller Sand Mixing Machine Key Components

Mixing Pan:

A circular or shallow container where sand, water, and additives are placed for mixing.

Rollers:

Large, heavy, cylindrical or wheel-shaped components that rotate over the sand mixture.
The weight of the rollers compresses and grinds the materials, ensuring proper mixing.

Scrapers or Plows:

Located in the pan to direct sand toward the rollers for thorough mixing.
Prevents the mixture from sticking to the pan walls.

Drive System:

Motor-driven mechanism that powers the rollers’ rotation.

The Bestech Factory Advantage

Direct sourcing from our manufacturing facility ensures you receive a machine built with the heavy-cast components and precision engineering required for decades of service.

Pressure-Adjustable Mulling Wheels: Our rollers are equipped with spring-loaded suspension systems. This allows operators to adjust the mulling pressure based on the sand type, ensuring optimal clay activation without crushing the silica grains.
Tungsten Carbide Scrapers: The most frequent wear-point in any mixer is the scraper. We use Tungsten Carbide (WC) surfaced blades that last 5–8 times longer than standard manganese steel, significantly reducing your maintenance downtime.
Reinforced Gearbox Engineering: We utilize specialized, high-torque reduction gearboxes specifically designed for the high-friction environment of wet sand mixing. Our gears are oil-bath lubricated for silent, cool operation.
Replaceable Diabase/Basalt Liners: To protect the main bowl, we offer optional high-wear stone or alloy liners that can be easily replaced, essentially giving you a “new” machine every few years at a fraction of the cost.

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Roller sand mixer is particularly useful in foundries where sand requires thorough mixing and compaction, ensuring it holds its shape well for metal casting molds

Working Principle
Raw materials (sand, binder, water, etc.) are placed in the mixing pan.
The rollers rotate, crushing and grinding the mixture under their weight.
Scrapers ensure that all parts of the mixture pass under the rollers evenly.
After sufficient mixing, the prepared sand is discharged for use.

Our Products

Foundry Machine

We provide advanced casting equipment, including molding, sand mixing, core shooting, and recycling technologies, all designed to help you improve casting precision, reduce waste, lower costs, and achieve higher efficiency and superior results for your production.

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Automatic Flaskless Molding Machine

This machine automates molding without flasks, improving speed, precision, and efficiency while reducing labor costs and ensuring high-quality casting.

Green Sand Mixer

The machine is mainly used for foundry sand mixing, can be used for single sand ,and mixed fired mold sand, self-hardening sand, face sand and core sand.

Hot Box Core Shooter

Hot Box Core Shooting Machine, also named hot box core shooter, is a moulding equipment widely used in the foundry casting industry.

Jolt squeeze molding machine

This machine uses jolt and squeeze action for precise, uniform molds, helping you improve efficiency, reduce waste, and enhance casting quality.

Multi Piston Molding Machine

High pressure multi piston molding machine adopt hydraulic compaction pressure is for medium and large cast iron castings.

Resin Sand Molding Reclamation Line

Resin sand molding reclamation line is a system used in foundries to recover and reuse resin-coated sand after it has been used in the molding and casting process.

Green Sand Molding Reclamation Line

This system efficiently recycles clay sand molds, reducing material costs and waste, helping you improve production efficiency and maintain consistent mold quality.

Cold Box Core Shooting Machine

This machine is used to produce sand cores for metal casting processes. It operates based on the cold box process, a method where sand is mixed with a resin binder and then hardened or cured by introducing a gaseous catalyst, usually at room temperature

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