Cut Belts and Screw Compressors
2009-09-17 16:14:00 Dear Gentlemen, we have 4 screw compressors driven by motors using belt, for sudden all compressors belt are cut at same period every day one belt is cut now we reach to stage that there is no more stock and tow compressors are down, so what do you think the reason behind it.
ball screw design
2009-09-08 07:36:00 Hi. help me to design better ball screws with correct formulae which is applicable Regards Thina
MTBF - Atlas Copco ZR4 Screw Air Compressor
2009-09-02 02:16:00 We have x4 Atlas Copco ZR4 air compressors, and I was interested to know if any engineers have some data on MTBF.Our compressors are about 15 years old, and have been worked hard. many thanks
Minimun Operating Pressure for 7Kg/cm² Screw Compressor
2009-09-01 12:02:00 Hi All, May i know why designed 7kg/cm² screw type air compressor not advisable to operate below 4.5kg/cm² ? There is a time i have an wrong perception that if i run under pressure (4.5kg/cm² of 7kg/cm²) i will get more air volume ? Pls advise me why i cant do that ? Thank
Minimum Operating Pressure for 7Kg/cm² Screw Compressor
2009-09-01 12:02:00 Hi All, May i know why designed 7kg/cm² screw type air compressor not advisable to operate below 4.5kg/cm² ? There is a time i have an wrong perception that if i run under pressure (4.5kg/cm² of 7kg/cm²) i will get more air volume ? Pls advise me why i cant do that ?
Seeking "C" Type Clamp With an Electro Hydraulic Screw
2009-08-31 07:05:00 need a "c" type clamp with an electro hydraulic "screw" approx. 6" jaw and the same depth for mobile car and truck mechanics. Typical use is to dissemble driveshaft "u" joints and re assemble same. A manual "twist handle" type clamp is an arm buster...typical pressures needed under a "ton". The "c"
Wanted: C-Type Clamp With Electrohydraulic Screw
2009-08-31 07:05:00 need a "c" type clamp with an electro hydraulic "screw" approx. 6" jaw and the same depth for mobile car and truck mechanics. Typical use is to dissemble driveshaft "u" joints and re assemble same. A manual "twist handle" type clamp is an arm buster...typical pressures needed under a "ton". The "c"
Plastics Machine's Screw
2009-08-26 07:47:00 how it can be classified Screw recomended as conventional screw,chrommised screw and bimatalic screw for different plastics material?
heavy duty lead screw
2009-08-10 07:05:00 If I am using a lead screw (TR 100 X 12 pitch) with around 20 rpm & axial load of 16 tonnes, what material combination should I use for Screw & nut to have long life (less wear & tear) with less lubrication. Pls guide.
MECHANICAL SCREW PALM OIL EXTRACTORS
2009-06-26 10:05:00 HI ALL IM IN THE PROCESS OF DESIGNING A CRUDE OALM OIL SCREW PRESS FOR SOME REMOTE VILLAGE IN KENYA TO IMPROVE TTHE LIVES OF THE RESIDENTS CAN ANYONE WITH EXPERIENCE IN THE SAME GIVE A FEW TIPS ON DESIGNS AND SIMPLE PROCESSING EQUIPMENT
Screw Press for Extracting Palm Oil
2009-06-26 10:05:00 HI ALL IM IN THE PROCESS OF DESIGNING A CRUDE OALM OIL SCREW PRESS FOR SOME REMOTE VILLAGE IN KENYA TO IMPROVE TTHE LIVES OF THE RESIDENTS CAN ANYONE WITH EXPERIENCE IN THE SAME GIVE A FEW TIPS ON DESIGNS AND SIMPLE PROCESSING EQUIPMENT
Constance Hays wrote a new blog post: Furlough-another screw to the America
2009-06-16 15:38:00 Constance Hays wrote a new blog post: Furlough-another screw to the American worker.. An article on the Huffington Post Website describes how the furlough system is working for California government employees . Nevada workers may want to take note. Apparently it isn’t working. Many workers are told to “schedule” themselves for their furlough days. Most don’t. They are afraid . With the hype and disaster scenario in the background ...
?Celebrity Pornhab with Dr Screw? Brings Out the Winners
2009-06-03 06:59:00 Jeff Conaway joins Mary Carey on the red carpet for relaunch of her adult film career with the spoof flick, “Celebrity Pornhab with Dr Screw”. Jeff Conaway looks like HELL. I know he...
By: Celebrity Smack!
My Favorite Science Screw-ups In The Star Trek Universe
2009-05-17 06:48:00 With the new 2009 Star Trek movie out, science fiction geeks the world over can once again begin their ritual of dissecting, analyzing, and arguing about Star Trek. And, wow, has it really been eleven movies already? How hip! So here’s my favorite “WTF?” moments which I experience whenever I ponder my favorite show about wearing tight uniforms to trespass all over the galaxy: Mr. Spock: Besides the anomalies like how he always has to stand up and peer into a garbage chute, there’s the mere existence of the pointy-eared one himself. He’s a half-human, half-Vulcan. As Clifford A. Pickover, my favorite mad scientist, points out in this article on the unrealistic science in SF, it shouldn’t be possible for an alien from another planet to impregnate a human. Think how difficult it is to get two Earthling species to cross-breed, even two species of ape. While we’re discussing the problems of breeding aliens and humans, I’d better link La...
Advantages and disadvantages of water injected screw air compressors
2009-04-17 04:41:00 I would like to know what are the disadvantages of a water injected screw compressor. I have been told that there is a very low life of the screw airend (Element)
Water Injected Screw Compressors - Pros and Cons
2009-04-17 04:41:00 I would like to know what are the disadvantages of a water injected screw compressor. I have been told that there is a very low life of the screw airend (Element)
Screw Threads and Multi-Start Heads
2009-04-15 23:20:00 efficiency of multi threaded screw is more than single threaded screw. Why? also difference between single start thread and multi start thead
Mehod to Check Gao between Barel & Screw of Extruder
2009-04-13 11:43:00 Can any one recommond method to check gap between a rotating Screw and barrel having length of about 2000 mm for extruders ? Screw is held in hollow shat of Gear Box and barrel is mounted on its flange on the face of Gera Box. Gap has to be checked at every 300 mm over total length. Usually gap is m
Extruders - Checking the Gap Between Barrel and Screw
2009-04-13 11:43:00 Can any one recommond method to check gap between a rotating Screw and barrel having length of about 2000 mm for extruders ? Screw is held in hollow shat of Gear Box and barrel is mounted on its flange on the face of Gera Box. Gap has to be checked at every 300 mm over total length. Usually gap is m
Rotary Screw Engine?
2009-04-11 01:21:00 Has anyone seen any work on using screw compressors to form a motor? It has occurred to me that two directly coupled compressors could be used to form a motor where one unit compresses the air which is passed directly (or via an intercooler) to the second rotor assembly where fuel is inject
Upsetting Machines and Screw Presses
2009-04-07 10:34:00 To buy a (Head upsetting) Screw press How can we calculte the capacity of the press? for example to form a head of 100 dia in 50 mm rod of material En 19. kindly suggest me any website regarding Forging by uplifting screw press.or any formula is there?
Solenoid Valve with Metering Screw
2009-04-06 23:39:00 Hello, I am looking for a Solenoid valve that has a metering screw on it. Its a Normally Closed (NC) valve, two way valve 1/4" or 3/8" female threads. 110V power to it. The one that i could find was from Kip INC. here is the website with all the info on the valve: http://w
Screw Conveyor Suppliers
2009-03-26 09:26:00 Hello Friends, I am a small business man, recently i received a project of manufacturing for public work. The key materials required for it are "Screw conveyors". I visited many sites to get the best companies. I come across some good companies like "Astro Engineeri
screw feedeer trough shape
2009-03-26 05:32:00 dear all, i need to feed Zinc oxide powder from a bin to packaging area. it seems to be good if i choose a screw feeder. but i don't know to select a proper trough shape( U or Circular etc). can anybody tell me how to choose thanks
Trough Shape for Screw Feeder
2009-03-26 05:32:00 dear all, i need to feed Zinc oxide powder from a bin to packaging area. it seems to be good if i choose a screw feeder. but i don't know to select a proper trough shape( U or Circular etc). can anybody tell me how to choose thanks
Brain Scan Can Predict When You're Going to Screw Up
2009-03-25 16:31:00 From Discover Magazine | RSS: Brain scans can pick up the distinct pattern of brain waves that occur when a person's attention lapses, and can therefore predict when the person is about to make a mistake, according to a small new study. Using magnetoencephalography (MEG), resear
Screw Feeders - Circumferential and Linear Speeds
2009-03-25 15:52:00 Dear All, Is there a standard which specifies or limits the circumferential speed or the linear speed of a screw feeder. The query is specifically related to a screw feeder for Zinc Oxide powder which is designed for feeding at a capacity of 0.9TPH, Density- 5.6T/M3 , what would
screw take up selection
2009-03-25 08:36:00 i want to select screw take up arrangement for conveyor of capacity 3000 tph and length 30 m as there is no space available for VGTU or HGTU. is these arrangement feasible?
Conveyor Belt Screw Take-Up
2009-03-25 08:36:00 i want to select screw take up arrangement for conveyor of capacity 3000 tph and length 30 m as there is no space available for VGTU or HGTU. is these arrangement feasible?
No Screw, No Glue: An Office Suite In Cardboard
2009-03-24 20:15:00 Recently Joost van Bleiswijk created his first cardboard office suite, a l no screw, no glue, for the award-winning Amsterdam-based advertising firm, Nothing. And he accomplished his goal in grand fashion, as if he were building the Colosseum.
Tilt Bed With Screw Actuator
2009-03-18 21:46:00 Below is a picture of a rough design of a tiltbed that uses a screw actuator insead of a typical hydraulic unit. With 900 pounds located as indicated (worst case) with the screw positioned as indicated. What kind of fource will that screw need to push to be able to tilt this tilt bed?
Screw Torque
2009-03-17 14:05:00 Hi, what is the minimum torque for 4-32 screw a PCB on the metal stud, 10-32 metal to metal and 4-32 plastic to metal. Equipment use is electric torque screwdriver ASA-6500 and ASA-4500 by EASTCLIFF. Thanks
Screw Conveyors vs. Spring Conveyors
2009-03-12 20:33:00 Which concept will be better for lifting powder(upto 10 to 12 feet)? Screw conveyor or spring conveyor? Direct driven by motor or geared motor?
Calculation of size of screw
2009-03-08 16:15:00 I want to mount an adjustable screw opposite a 25T capacity hydraulic cylinder mounted inside a mild steel frame. This screw should be able to take the full load of 25-Tons. I would be pressing various components and the smallest component will need the screw to be raised, since the cylinder does no
Friction screw presses
2009-03-07 10:39:00 What is the application difference between FRICTION SCREW PRESS - DOWN STROKE and UPSTROKE .I would like to forge M36mm x 200mm hex head bolt.Which press i choose.How can i calculate the capacity reqd to forge this components? by cold or hot forging
Color Change in Oil for Single Screw Air Compressor
2009-03-04 14:28:00 Hi, I met a problem, the colour of my single screw air compressor oil changed to violet after running about 1000h. the oil is composed of hydrocrack base stocks and some antioxidants/antiwears. what caused the colour change?
Screw Pump Suppliers in Texas
2009-02-27 14:15:00 Does anybody know any screw pump suppliers in the Texas USA area? I would appreciate any idea! I am looking for screw type fuel booster pumps of the screw type
Florida Legislature to Florida Teachers - Screw You - Seeks to End Tenure
2009-02-14 18:37:00 Tenure is a joke. It keeps bad teachers on the job and makes it difficult, if not impossible, to fire them. CTA (Classroom Teachers Association) says tenure is necessary to protect teachers from batshit crazy administrators. Nonsense. What other job allows you to underperform without repercussions - allowing someone to keep a job indefinitely until he either dies or retires? Who do teachers think they are? Judges? But when Florida lawmakers are faced with all the problems in Florida schools and then decide to make this a priority, isn’t that yet another negative and nasty sign that Florida teachers are not valued? Supporters say ending tenure is a start. Maybe they’re right. Teachers should be paid more and the FCAT should be a diagnostic tool and nothing more. I’d support legislation that moves to solve all our education problems, but I also don’t want to deny that ending tenure is a good thing. This piece of legislation that will end tenure will also seek t...
Automatic Screw Feeders
2009-02-13 04:25:00 Hi all, Is there any method to automate screw feeding. The screw is slotted screw and the major problem is that the L/D Ratio = 1. hence it is not possible to feed it by tubes. Regards, Praywin
Ben wrote a new blog post: Screw Obama,American Idol Has a Controversy!!!!!
2009-02-13 03:55:00 Ben wrote a new blog post: Screw Obama,American Idol Has a Controversy!!!!!! It's TRUE!!!!! Can you believe it? Not even into the real part of the show,and already someone's been kicked off. That Pancitti girl,I don't even remember what song she sang,but apparently she had a contract with A&M records and was maybe screwing one or more of the producers. Say it ain't so. A girl has ...
By: BackBeat
Pelosi: Screw Barack?s ?Bi-Partisanship? AND The GOP
2009-02-09 14:48:00 -By Warner Todd Huston Once again Nancy Pelois has told Barack Obama that he can take his desire for a post-partisan Washington and shove it. Pelosi has left little doubt that she doesn’t give a flying fig about the bi-partisan method of governing to which Obama continually pays lip-service. So, will President Obama take these slaps from ...
By: Publius Forum
Ben wrote a new blog post: Obama admits screw up....those that voted for hi
2009-02-04 04:06:00 Ben wrote a new blog post: Obama admits screw up....those that voted for him next... Well,at least Obama is humble enough to admit he screwed up by picking Tom Dascshel to head up ANYTHING. I really don't know why HE'S admitting he screwed up,he's just putting the people in place the DNC,Howard"Screech"Dean and Nancy Pelosi want in place. He didn't screw up,THEY are the ones that are screwing him up,and ...
By: BackBeat
Water-Cooled Screw Chiller Drawing
2009-02-03 06:59:00 Hi, I need water cooled screw chiller plan dwg. Where can i get it. If anybody have it can u please send the same to my mail id. gowrish80@rediffmail.com Please do the needful. regards, gowrish
Spur Gears with Pin Holes / Set-Screw Holes
2009-01-22 22:45:00 Do you guys know of any company which sells spur gears with built in pin holes/set screw holes ?
9/16 Acme Screw Machine - Collect Problem
2009-01-22 00:57:00 I have a Acme screw machine that has been turn into a chucker. My operator is having problems with the collects sticking and it will not open and close unless he hits the adusting nut in the back he has change the fingers and pins any one got any ideas on what to do to correct this problem?
Plastic Screw Torque
2009-01-20 06:51:00 What should be the Torque for M3 Plastic Screw with 7mm Length? Material is Nylon 6/6, RMS-01.
Screw Generator
2009-01-18 00:59:00 How difficult will be to addapt an 'Screw Compressor' machine and modified to make it work like a power generator. Let's say for example that I take one of such puppies and gear it up by the use of gears or belts or chains and make turn by wind power attach to an electric 'motor-generator' for e
Micrometer Screw
2009-01-16 15:58:00 hi to all, plz look at the picture and its explanation this is called a micrometer screw,but i could not find anything like this around or on net can anybody explain what this is exactly and how this works its application etc.. http://www.sendspace.com/file/w-pllzk
Building a Minto Wheel and Archimedean Screw
2008-12-18 17:21:00 Does anybody here know the equations or formulae needed to design and build a Minto wheel? How do you calculate how much torque it can produce, and how exactly do you determine in which direction it will rotate in? Also, how do you calculate the flow rate and optimum angle of an Archimedean screw, a
Extrusion: Twin Screw or Single ?
2008-12-03 10:41:00 What is best for PET sheet extrusion, twin screw or long single ? don't worry about drying material or screw vent. What is bad on the twin screw and what is bad on the single screw ? Thank you. |
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