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DIY Vacuum Press

    Do It Yourself Vacuum Press

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Vacuum Pump - 5 CFM
120v AC / 240v AC
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Regular Price:
$399.95
Your Price:
$329.50   ($70.45 Savings!)
Customer Rating:
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Mounting Screws:

 

Product Description


This commerical grade vacuum pump replaces the Gast model that we previously offered. I could no longer accept the ridiculous price increases and shoddy customer support coming from Gast Manufacturing so I aggressively searched for a more affordable and durable alternative. Not only are these new pumps less expensive by nearly $80, they are very quiet and use less power.

This pump is perfect for the EVS vacuum press kit and is suitable for vacuum bags as large as 4x15. You'll find that it generates a very powerful vacuum so it can be used for bending/laminating veneer over odd shaped forms. These units are also superb for bench top vacuum clamping.

pg-evs-compatible.gifSpecifications

  • Design: Oil-less Double Rocking Piston
  • Motor: Single Phase Induction
  • Start-Up Amps: 7.7 (does not require a relay)
  • Running Amps: 3.7
  • Exhaust Muffler: Included
  • Maximum Vacuum: 25.5" Hg at sea level
  • Maximum Bag Pressure: 1,785 lbs/sqr ft
  • Air Evacuation: 5 CFM @ 0" Hg
  • Port size: 1/4 NPT
  • Blower Design: Air-Over-Motor
  • Power Cord: 5' Attached Cord with Plug
  • Capacitor: Included
  • Construction: Permanently Lubricated Ball Bearings
  • Cylinder: Wetted Aluminum Alloy
  • Sound Rating: 63 dB

Features

  • Thermally protected (266° F), induction motor
  • Flow-through ventilation - provides superior cooling and low discharge air temperature
  • Long-life impregnated cylinder is hard coated with aluminum alloy for greater durability
  • Permanently lubricated ball bearing construction - offers a long service-free life in continuous duty applications
  • Balanced eccentric - provides smooth, low-vibration operation
  • Ultra-quiet vacuum pump includes silencing muffler

Optional Mounting Screws
The mounting screw option (above) includes four 6mm x 1mm x 25mm machine screws for mounting the pump to your carrier.

International Customers
This pump is now available in a 240v AC version but we do not offer support for 240v versions of the EVS kit. A qualified electrician should be consulted when using this pump with our EVS vacuum press kit. The plug on the 240v power cord is designed for Australia power outlets using the AS3112 standard.


Note from Joe:
This is the most quiet piston-based vacuum pump that I've ever found. I think you will be pleasantly surprised. The sound level from this pump is even less than some diaphragm pumps!




How does the 5.3 CFM differ from the 5 CFM pump?
The performance is almost identical but the price and weight difference of each pump are notable. The 5.3 CFM pump is considerably more affordable but it weighs more, has a shorter warranty, and requires a relay to power the EVS vacuum press system. Keep in mind that both of these pumps are excellent for use with the EVS vacuum press kit.

  5 CFM Pump 5.3 CFM Pump
Maximum Vacuum 25.5" of Hg 25.5" of Hg
Warranty 12 months 90 days
Cord Length 5 ft 6 ft
Sound Rating 63 dB 67 dB
Start Up Amps 7.7 12
Running Amps 3.7 5.6
EVS Kit Relay Required No Yes
Size 9.5" x 7.25" x 6" 10.75" x 9" x 7"
Weight 17 lbs 24 lbs
Price $329.50 $239.50
Picture

5 CFM Vacuum Pump

5.3 CFM Vacuum Pump

 
What is the warranty on this pump?

VeneerSupplies.com warrants this pump to be free of defects in manufacturing and materials for a period of 12 months from the date of purchase when purchased with and used with a VeneerSupplies.com vacuum press kit. No warranty is provided for vacuum pumps that are ordered without a VeneerSupplies.com vacuum press kit.

How does my altitude affect the maximum vacuum level of this pump?
There is a loss of approximately 1" of Hg for every 1,000 feet above sea level. For example, at 5,000 feet above sea level the most vacuum this pump will create is 20.5" of Hg. The generally accepted minimum for vacuum pressing a veneer is 17" of Hg.

Can this pump be used for vacuum chucking?
There is no safe way to answer this question. More information needs to be provided. You would need to know three things...

  1. What is the surface area where the chuck attaches to the project?
  2. Is the project material porous? (some species of wood are very porous)
  3. How much weight will be held on the chuck at turning speed?

With these bits of information, you can calculate a number that will help you determine if the pump is safe to use for chucking. Continue on to the next question.

How much clamping force will the pump create for vacuum chucking?
This is based on a calculation using the maximum sustainable vacuum level and the surface area where the project is attached to the chuck. A smaller attachment area means less clamping/chucking force. A large industrial pump capable of pulling a very high vacuum may not be suitable for chucking if the vacuum surface area of the project is small. You have to calculate the vacuum surface area on your project first. Then determine what amount of vacuum you are capable of applying to the project. With this information, you can determine the total clamping force on the project and consider whether or not it is enough to safely hold your project while it is being turned. Here is the method for calculating the clamping force.

  1. Determine the surface area of the vacuum attachment point. In most cases, the vacuum chuck will be circular so use Pi (roughly 3.14) to determine this number. The formula starts by taking the diameter and dividing by two. This gives you the radius. Then multiply the radius by 3.14 and then multiply it again by the radius. Let's use a chuck diameter of 6" and determine the surface area. Divide 6 by 2. That makes 3 so then multiply 3 times 3.14 (Pi), then multiply that again by 3.
    -
    6 ÷ 2 = 3
    3 x 3.14 = 9.42
    3 x 9.42 = 28.26

    -
    So here we have 28.26 square inches in a 6" diameter chucking surface.
    -
  2. Determine the maximum sustainable vacuum level that you can reach with your project piece attached to the vacuum chuck simply by placing it on the chuck and turning on your vacuum pump. A non-porous material that is chucked to your lathe will typically achieve the same level of maximum vacuum that your pump is capable of achieving. In other words, the project material itself allows no loss of vacuum therefor the pump will achieve its best available vacuum.
    -
    In the following example let's assume that the project material is non-porous and that the pump can generate 25" of Hg. For every inch of Hg vacuum, you get .49 lbs per square inch of pressure. Multiply .49 by the vacuum level that the pump can create.

    .49 x 25 = 12.25 (this is how much pressure in pounds that you are getting per square inch)
    -
  3. Multiply 28.26 x 12.25 to get 346.19 lbs of force holding your project to the lathe.
    -
  4. Now only you can decide if that is enough chucking force to safely hold your project.

What if the chucking project is porous? How do I determine if this pump is suitable?
Unfortunately, there is no way to determine this without actually placing the project on a vacuum chuck. You would need to determine the actual maximum sustainable vacuum and this will vary across each project you try out depending on the size and porosity of the material.

What pump do you recommend for vacuum chucking?
I can only suggest one thing... the bigger, the better. Several of our customers are using 3 CFM vacuum sources for chucking but most are opting for 5 CFM vacuum sources.

What is the size of the pump?
The approximate measurements are shown below.

  • Length: 9.5"
  • Height: 7.25"
  • Width: 6"

How does this pump compare to the Gast pump that was formerly offered?
The new model...

  • generates ten less decibels than the Gast model.
  • is nearly $80 less expensive than the Gast model.
  • includes a much better exhaust muffler.
  • is modular so replacing a worn part is very easy.
  • uses less power at start-up and while running.

Product Reviews

  1. Review from Lamar, Missouri

    Review by David Barnard
    Rating:

    I have never done vacuum forming before but always wanted to try it out. I bought this pump and thinking it would be noisey like an air compressor; it is not. A huge amount of power for its size. Shipping was quick even during a snow storm eastern US.


  2. Review from Gastonia, NC

    Review by Curtis Johnson
    Rating:

    I used this pump with the EVS auto cycling kit. It does not draw too much power to require the use of a separate relay. The unit was powerful and drew vacuum down in a hurry, and was also surprisingly quiet.



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