Real factory photos in sequence: hover over the image (or drag on your phone) to see the equipment from every angle.
Grain Auger (Chupim)
The grain auger (chupim) speeds up the loading and unloading of mills, silos, trucks, bagging machines, extruders, injection molding machines and more. It is also needed for the continuous conveying of cereals, grains, feed, granulated plastic resins and chemicals, cutting labor costs and increasing productivity, and turning into minutes what used to take hours.
Applications
6 models available as standard, plus custom adaptations when your layout calls for them.
Real videoGrain auger
See it running
The Grain Auger (Chupim) in operation
Real footage of Demakine equipment running, just as it leaves the factory in Limeira/SP, Brazil. It helps you understand how it works before talking to engineering.
About the Grain Auger (Chupim)
The grain auger (chupim) speeds up the loading and unloading of mills, silos, trucks, bagging machines, extruders, injection molding machines and more. It is also needed for the continuous conveying of cereals, grains, feed, granulated plastic resins and chemicals, cutting labor costs and increasing productivity, and turning into minutes what used to take hours.
Technical features
- 13″ automotive wheels and tires
- Manual ratchet lift
- Mobile hopper to receive the material
- Intermediate bearing every 3 meters
- Electric switch for operation
- Discharge hood
- Enclosed motor driving the screw, available in 220, 380 or 440 volts three-phase; in special cases the motor can be single-phase
- Speed inverter
- Single-phase 110/220 V motor
- Electric lift
- Tractor power take-off
- Mostly PU (polyurethane) paint
Specifications
Compare the 6 models
Factory reference values. Length, belt width and drive can be adjusted according to the project.
Same on every model
- Screw diameter
- 4″ a 16″
- Output capacity Ø4″
- 5 to 10 t/h
- Output capacity Ø6″
- 15 to 20 t/h
- Output capacity Ø8″
- 25 to 30 t/h
- Output capacity Ø10″
- 45 to 50 t/h
- Output capacity Ø12″
- 70 to 75 t/h
- Output capacity Ø14″
- 90 to 100 t/h
- Output capacity Ø16″
- 125 to 135 t/h
RTC5
- Length
- 5 meters
- Maximum height
- 3,5 m
- Minimum height
- 1,8 m
RTC6
- Length
- 6 meters
- Maximum height
- 4,1 m
- Minimum height
- 1,9 m
RTC8
- Length
- 8 meters
- Maximum height
- 5,5 m
- Minimum height
- 2,0 m
RTC10
- Length
- 10 meters
- Maximum height
- 6,9 m
- Minimum height
- 2,2 m
RTC12
- Length
- 12 meters
- Maximum height
- 8,3 m
- Minimum height
- 2,5 m
RTC15
- Length
- 15 meters
- Maximum height
- 10,4 m
- Minimum height
- 2,8 m
Engineering tools
Do the math before requesting a quote
The same logic our engineering team uses every day, with the models from our real production table.
Material, distance and height: get the recommended model.
Your operation
Engineering recommendation
Screw Conveyor
Required length
6.5 m
Incline
23°
Recommended model
RTC8
Motor
to be defined
Belt / screw
4″ a 16″
Capacity
to be defined
Reference values from our factory tables. Final confirmation is made by our engineering team with your line data.
Compatibility
Which material this equipment is for
A quick guide by type of load. "On request" does not mean no: it means it can be done with an adjustment of belt, profile, sealing or structural material, which is why we need to know your product before recommending.
- Grain and bulkRecommended
- BagsNot recommended
- Boxes and packagesNot recommended
- Waste and recyclingOn request
- Sand and gravelOn request
- CharcoalOn request
- Fruits and vegetablesNot recommended
Your material is not on the list? Describe it on WhatsApp and we will tell you right away whether this line fits or which equipment is the right one.
Maintenance checklist
Checklist for the Grain Auger (Chupim)
Routine from the grain auger's technical manual. Pay special attention to the steel cables and pulleys: without inspection, the cable can break.
0 of 9 items
Every month
- Lubricate the bearings through the grease fittings on the housings, with standard grease
See the manual for further information.
Periodically
- Check that the steel cables are well secured and not worn
- Check that the pulleys turn freely and grease them
- Examine the screw for damage or unusual wear
- Retighten bolts, nuts, fasteners and hardware
- Watch the bearings: loud noise, vibration, heating or abnormal wear
- Keep the motor clean, with the ventilation free for the fan air to circulate
- Check the electrical connections and the motor mounting bolts
- Gearbox: it comes from the factory with synthetic oil, which needs little maintenance; keep it clean and inspected
See the manual for further information.
Always
- Switch off and lock out the power supply before any maintenance
- Never reverse the switch with the motor turning: position 0, wait for it to stop and only then reverse
- Keep all guards in place and in good condition
Installation sheet
What to have ready before the machine arrives
When the site is prepared, the machine goes into operation on the day it arrives. This is the list we give customers when the order is closed.
- 1Space for the tube and the inletCheck the clearance for the whole tube and the position of the inlet and the outlet.
- 2Firm base at the supportsLevel supports avoid strain on the shaft and uneven wear on the screw flight.
- 3Power point at the correct voltageCircuit breaker, grounding and voltage checked before the motor is delivered.
- 4Headroom and accessCheck the height for the discharge point and the route to the assembly site.
- 5Constant feedingDefine how the product reaches the inlet. Irregular feeding brings the flow rate down.
Before you buy
3 mistakes that cost dearly in this choice
These are the mismatches we see most in machines bought in a hurry. It costs little to check beforehand and a lot to fix afterwards.
Diameter and pitch chosen without the actual material
Wet, lumpy or fibrous product behaves differently from dry grain. Tell us the moisture and particle size so the screw pitch comes out right.
Drive at its limit on a full-load start
A screw that starts with the tube loaded requires more torque. Without spare motor capacity, the start becomes a trip.
Steep incline without reviewing capacity
The steeper the screw, the lower the actual flow rate. If the incline increases after the project, the capacity has to be recalculated.
After-sales
Spare parts and consumables
Wear items we supply for this line. Having the critical parts in stock before harvest is what separates a stoppage of hours from a stoppage of days.
Need a part now?
Tell us the equipment and, if you have it, send a photo of the part. The quote comes straight from technical service.
Frequently asked questions
What people ask most about this equipment line.
See all frequently asked questions →A screw conveyor is enclosed, takes up little space and is great for powder and fine bulk. A belt conveyor is better for packaged product, large volumes and long distances. Describe the material and the distance and we will recommend one.
Yes, for products that require sanitation or in corrosive environments.
It depends on the moisture level and the tendency to cake. Tell us the actual material and, if possible, send a photo. In some cases we recommend a different pitch and finish.
By WhatsApp, phone, e-mail or any form on the website. To speed things up, tell us the material conveyed, the distance to cover, the discharge height and the capacity you want. If you can send a photo or video of the site, the sizing will be more accurate.
Nothing leaves the factory without a running test. Larger equipment may arrive in parts for transport and is assembled on site following the guidance we send along.
Quote
Request a proposal for the Grain Auger (Chupim)
To speed things up, tell us: material conveyed, length needed, discharge height and capacity wanted. If you have photos of the site, even better: send them on WhatsApp.
- Project sized for your operation
- Manufactured in-house in Limeira/SP, Brazil
- Delivery throughout Brazil
- Technical service and spare parts
Related equipment
Need custom-built equipment?
Send us the details of your operation: material, length, height and capacity. Our engineering team puts together the ideal solution and you get the quote within 1 business day.
(19) 3033-9397 · (19) 99884-2717 · vendas@demakine.com.br