24.7mm Extruder Screw + 25mm Diameter Tube bundle

ATTENTION - THIS ITEM IS SOLD OUT - SEE AVAILABILITY BELOW

These parts are an alternative option for people who does not have a 26mm diameter round tube available in their region.

This listing includes:

1xExtruder Screw

Size: 24.7mm(diameter) X 588mm (length)

Premade Keyway and Key

Material: 38CrMoAlA Steel.

1x Steel Round Tube

Size: 25mm(internal diameter) X 530mm (length)

External diameter: 35mm

Material: ST-52 Steel

Availability: End of April/Early May

Shipping within continental USA is: €20 (US$25 approx.)

If you are interested please pre order the item and i will ship it to you as soon as it is available.

International Shipping Includes: Europe €50, Central America and Canada €35, please note that some regions may have additional shipping charges.
Weight: 3.5Kg (7.72lbs.)
According to Precious Plastic drawings: No
Dimensions: package: 60cm X 5cm X 5cm
Listing created Mar 23, 2018

Public discussion (18)

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Robert N

29 days ago

What is exact i.d. of tube you are selling in thousands of an inch ?

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Megatec.Center

29 days ago

The I.D. may vary from 0,980315" to 0,988189", unfortunately not all tubes are made equal.

Thanks

Missing

Robert N

28 days ago

Hmmm, so if I performed the math correctly you are stating your extruder screw is 0.972 inch size O.D. - - - - versus tubing i.d.is .008" to.016" larger ?

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Megatec.Center

28 days ago

Hi Robert, I have measured all the tubes i've purchased recently and all of them show I.D. below 24.9mm(0,980315in) thus the screw is actually pretty tight inside it, so much so, that i may have to face mill the overall diameter of the 24.7mm screw. In any case, great friction and pressure will be generated inside the tube and that might be a hazard or a benefit.

Since i am an enthusiast and not an engineer i am open to suggestions.

Let me know what you think.

Best Regards

L.Andrade

Missing

Robert N

28 days ago

Andrade:

The professional screw I recently purchased on Precious Plastic Bazzar measures out pretty close to 1.000 inch, and my source of chrome moly tubing in USA shipped me inside barrel tubing with average i.d. of 1.010 inch, the fit is very nice.

http://www.aircraftspruce.com/catalog/mepages/4130tubing_un1.php

1-1/4 .120 1.010 i.d. 1.250 O.D. 03-08000 $6.85 per foot

1-1/2 .120 1.260 i.d. 1.500 O.D. 03-09300 $7.75 per foot

I drill .187" holes in large tube only, 2 inches apart on all 4 sides down the length, slide the small tube inside the larger tube, spot weld with MIG every hole with 1 inch steel mandrel inside i.d. of small tube to try to keep straight from weld pulling. Super thick barrel withstands more torsional stress.

Missing

Robert N

28 days ago

This chrome moly tubing is only tubing I can find with tight tolerance i.d. to the screw, though wall thickness a bit thin at .120", so I "double up" tube on outside for strength.

Missing

Robert N

28 days ago

There are many websites selling this 4130 ALLOY STEEL ROUND SEAMLESS Chrome Moly Tubing, it can be purchased cheaper direct from steel suppliers in 21 to 23 foot long tubes . . . .

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Megatec.Center

28 days ago

Hi Robert, I am surprised the PP's screw fits inside your 1.010" (26.65mm) I.D. tube since PP's specs calls for a 25.7mm O.D. screw.

I've consulted similar companies to the one that sold you those tubes but it never crossed my mind that one tube could be welded inside another, i've always thought this procedure would deform the tube.

Nevertheless i am glad you've found some companies that do carry these tubes.

I am only concerned about the I.D. which seems to be too large for the screw i have. Nevertheless the price is good and i might purchase one of those to experiment with.

When i listed this tube on the bazar i was thinking that the average person would not want or know how to weld and drill holes to place a tube inside another and

you are probably aware that your solution may work for some and not for others.

If your solution works, you might even put up your barrel for sale and make some $$$. All improvements are welcome.

My next listing will be offering the barrel as specified by PP along with the screw with keyway, key and nozzle.

Thanks for the tips and happy recycling

L.Andrade

Missing

Robert N

28 days ago

Andrade:

As I understand, PP's original specs are not really "tight enough" to industry norms.

Professional extruder screw rebuilding services explain that for a 1 inch screw, .015 inch total play in the barrel is the point of wear such that rebuilding is needed, .007 to .010 is optimum play for a 1" screw in barrel.

The custom screw I purchased from the PP Bazzar from Nkos is exactly 1 inch diameter, chrome moly steel, came out of China I believe, by way of Phillipines

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Megatec.Center

28 days ago

I see, so you`ve purchased it with smaller diameter from another seller hence the perfect fit.

It seems people around the world are providing solutions everywhere.

Thank you for letting me know

Best Regards

Missing

Robert N

28 days ago

Glad to help out.

What country are you located in ?

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Megatec.Center

28 days ago

I am in Brazil right now but i also have a place in Homestead, Florida which is where i will be next month.

We hand craft some machines here and get some parts from China although shipping is expensivefor some parts.

I am hoping that in the near future i will be able to produce the machines at both locations.

Best Regards

Missing

Lucas M

21 days ago

Hi, i want to buy this set. I'm from Argentina. How long it takes for the shipment to arrive? What is the final price with shipping included to Argentina?

Thanks!

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Megatec.Center

21 days ago

Hello, it takes up to 15 business days. The cost with shipping included is €320.

Thank You, Gracias

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Max F

14 days ago

Hii, the product is at brazil? If yes, it would be amazing for me.

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Megatec.Center

14 days ago

Hello, we have some tubes in Brazil and only one extruder screw that is a little longer, it has 600mm.

The price is the same.

Please let me know if you are interested.

Best Regards

Missing

Max F

14 days ago

Ok, i'm getting resources from my uni to buy this screw, this take some time, maybe one or two weeks, but i will try to make this faster. In some days i'll send you a messange teeling about the situation. Obrigado

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Megatec.Center

13 days ago

Ok, hope everything goes well, the screw will be available by early May, let me know when you are ready to purchase.

Best Regards

L. Andrade

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