Re: [Fwd: RE: Steel Ball For Impact Test]
Jasmine- You can order a stainless steel 2" ball online from McMaster-Carr for $28. I did, and received it the next day via standard UPS! (Those test equipment labs want $95-$150 for the same ball with a loop soldered on.) www.mcmaster.com catalog page# 3184 (steel balls) Stainless Steel (C440) P/N 9529K53 , 2" dia. This ball weighs 520g, which is within the 60950 spec of 500g +- 25g. I had a buddy at a machine shop drill a hole through the middle so I could run a cord through it for pendulum use, too. (Drilling out the hole brought the weight down to almost 500g.) Any weight discrenpancy can be dealt with by adjusting the drop height, of course. Have fun making an impact for your company! Dirk > Original Message ---- > Subject: RE: Steel Ball For Impact Test > Date: Tue, 21 Mar 2000 14:49:31 - > From: John Allen > Reply-To: John Allen > To: Jasmine TAN > ,"emc-p...@ieee.org","'Jim > Bacher'" > > > This item can be obtained from a number of US > sources - such as ED&D - > but > cheap they are not as we just found out when we > boought one!! > > A cheaper source is probably your local heavy > industrial equipment > service > organisation - a 2 inch diameter ball bearing is > more or less what you > need. > > As for tolerances: if it is a little light or heavy > then I am sure a > compentent workshop can fix that with a welding > torch or a grinder - > especially if you get a loop for the cord added at > the same time! > > Regards > > John Allen > Racal Defence Electronics Ltd. > > -- > From: Jim Bacher[SMTP:jim_bac...@mail.monarch.com] > Sent: 21 March 2000 12:29 > To: Jasmine TAN; emc-p...@ieee.org > Subject: Re:Steel Ball For Impact Test > > > forwarded for Jasmine TAN.Jim > > Reply > Separator > Subject:Steel Ball For Impact Test > Author: "Jasmine TAN" > Date: 3/21/00 6:53 PM > > Hi, > > Does anyone has any recommended source on "Steel > ball" for Impact > testing > as listed in UL60950. > > Thanks for your recommendation. > > Regards, > Jas > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > __ Do You Yahoo!? Talk to your friends online with Yahoo! Messenger. http://im.yahoo.com --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: Steel Ball For Impact Test
As an alternative to a swinging ball, consider making no changes to the ball and dropping it vertically using a tube. The ball can be held in place in the tube using a bolt (or a similar object) as a stop. Pull the bolt and the ball drops from the exact height required by the standard. The test is very repeatable as long as the tube is vertical and the diameter is slightly larger than the ball. Richard Woods -- From: John Allen [SMTP:john.al...@rdel.co.uk] Sent: Tuesday, March 21, 2000 9:50 AM To: Jasmine TAN; emc-p...@ieee.org; 'Jim Bacher' Subject: RE: Steel Ball For Impact Test This item can be obtained from a number of US sources - such as ED&D - but cheap they are not as we just found out when we boought one!! A cheaper source is probably your local heavy industrial equipment service organisation - a 2 inch diameter ball bearing is more or less what you need. As for tolerances: if it is a little light or heavy then I am sure a compentent workshop can fix that with a welding torch or a grinder - especially if you get a loop for the cord added at the same time! Regards John Allen Racal Defence Electronics Ltd. -- From: Jim Bacher[SMTP:jim_bac...@mail.monarch.com] Sent: 21 March 2000 12:29 To: Jasmine TAN; emc-p...@ieee.org Subject:Re:Steel Ball For Impact Test forwarded for Jasmine TAN.Jim Reply Separator Subject:Steel Ball For Impact Test Author: "Jasmine TAN" Date: 3/21/00 6:53 PM Hi, Does anyone has any recommended source on "Steel ball" for Impact testing as listed in UL60950. Thanks for your recommendation. Regards, Jas --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: Steel Ball For Impact Test
We bought ours from a bearing manufacturer several years ago. It met the spec and was very cost effective ($6.00 rings a bell). > -- > From: > jim_bac...@mail.monarch.com[SMTP:jim_bac...@mail.monarch.com] > Reply To: jim_bac...@mail.monarch.com > Sent: Tuesday, March 21, 2000 7:29 AM > To: Jasmine TAN; emc-p...@ieee.org > Subject: Re:Steel Ball For Impact Test > > > forwarded for Jasmine TAN.Jim > > Reply Separator > Subject:Steel Ball For Impact Test > Author: "Jasmine TAN" > Date: 3/21/00 6:53 PM > > Hi, > > Does anyone has any recommended source on "Steel ball" for Impact testing > as listed in UL60950. > > Thanks for your recommendation. > > Regards, > Jas > > > > > --- > This message is from the IEEE EMC Society Product Safety > Technical Committee emc-pstc discussion list. > > To cancel your subscription, send mail to: > majord...@ieee.org > with the single line: > unsubscribe emc-pstc > > For help, send mail to the list administrators: > Jim Bacher: jim_bac...@mail.monarch.com > Michael Garretson:pstc_ad...@garretson.org > > For policy questions, send mail to: > Richard Nute: ri...@ieee.org > > --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: Steel Ball For Impact Test
This item can be obtained from a number of US sources - such as ED&D - but cheap they are not as we just found out when we boought one!! A cheaper source is probably your local heavy industrial equipment service organisation - a 2 inch diameter ball bearing is more or less what you need. As for tolerances: if it is a little light or heavy then I am sure a compentent workshop can fix that with a welding torch or a grinder - especially if you get a loop for the cord added at the same time! Regards John Allen Racal Defence Electronics Ltd. -- From: Jim Bacher[SMTP:jim_bac...@mail.monarch.com] Sent: 21 March 2000 12:29 To: Jasmine TAN; emc-p...@ieee.org Subject:Re:Steel Ball For Impact Test forwarded for Jasmine TAN.Jim Reply Separator Subject:Steel Ball For Impact Test Author: "Jasmine TAN" List-Post: emc-pstc@listserv.ieee.org Date: 3/21/00 6:53 PM Hi, Does anyone has any recommended source on "Steel ball" for Impact testing as listed in UL60950. Thanks for your recommendation. Regards, Jas --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
RE: Steel Ball For Impact Test
ED&D contact Mr. PATRICK S. McGEE Phone 919 469 9434 OR 1 800 806 6236 Fax 919 469 5743, 2200 Gateway Centre Blvd. Suite 215, Morrisville, NC, 27560, US. e-mail: prodsaf...@aol.com -Original Message- From: jim_bac...@mail.monarch.com [mailto:jim_bac...@mail.monarch.com] Sent: Tuesday, March 21, 2000 7:30 AM To: Jasmine TAN; emc-p...@ieee.org Subject: Re:Steel Ball For Impact Test forwarded for Jasmine TAN.Jim Reply Separator Subject:Steel Ball For Impact Test Author: "Jasmine TAN" List-Post: emc-pstc@listserv.ieee.org Date: 3/21/00 6:53 PM Hi, Does anyone has any recommended source on "Steel ball" for Impact testing as listed in UL60950. Thanks for your recommendation. Regards, Jas --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: Steel Ball For Impact Test
Hi Jasmine, I am sorry, I just notice the telephone number has change, ED&D - Phone: 919 - 469-9434 www.productsafet.com Thank you and best regards Syed M. Khyser Project Manager RES GmbH - Karben Germany Tel.: +49-6039-9182-0 Fax: +49-6039-9182-29 Email: smkhy...@aol.com --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
Re: Steel Ball For Impact Test
Hi Jasmine, Try ED&D - USA Tel: 919-821-7088 Fax: 919-821-1939 www.productsafet.com/prodsafety Regards Syed M. Khyser Project Manager RES GmbH - Karben Germany Tel.: +49-6039-9182-0 Fax: +49-6039-9182-29 Email: smkhy...@aol.com --- This message is from the IEEE EMC Society Product Safety Technical Committee emc-pstc discussion list. To cancel your subscription, send mail to: majord...@ieee.org with the single line: unsubscribe emc-pstc For help, send mail to the list administrators: Jim Bacher: jim_bac...@mail.monarch.com Michael Garretson:pstc_ad...@garretson.org For policy questions, send mail to: Richard Nute: ri...@ieee.org
