| Author |
Message |
Mark Hopkins
Unregistered guest
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| Posted on Thursday, August 16, 2007 - 3:40 pm: |
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I am looking for 5mm id. x 10mm od. x 10 mm long needle bearings, can you help? |
Admin (Admin)
Board Administrator
Username: Admin
Post Number: 558
Registered: 10-2004
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| Posted on Sunday, August 19, 2007 - 9:18 am: |
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Mark,
Sorry but no, our 5mm needle roller bearings are smaller than this. It may be that your bearing has an internal sleeve hence the larger OD. |
Bryn (Bryn)
Member
Username: Bryn
Post Number: 1
Registered: 10-2007
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| Posted on Tuesday, October 30, 2007 - 10:45 am: |
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I am looking for 2 No. piller type bearings with a 12mm bore only static not the swivel type as in your standard piller bearings.
Can Technobots help?
Bryn |
Admin (Admin)
Board Administrator
Username: Admin
Post Number: 615
Registered: 10-2004
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| Posted on Tuesday, October 30, 2007 - 9:54 pm: |
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Bryn,
Sorry, I'm not familiar with a piller type bearing or do you mean pillow block? If so, we offer two types - cast and pressed steel. Both types are self aligning although with the pressed steel, if you clamp the two halves tightly, it does hold the bearing very firmly.
Unable to send you a personal reply as you did not leave a reply Email address. |
kevin brett
Unregistered guest
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| Posted on Wednesday, July 29, 2009 - 8:19 pm: |
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HI, i want to upgrade my bearings to something faster & sronger mine are at present ball bearing
hubs all i know is that the size i can see is
16mm bore for 16mm axles if that help they are on
sack barrow wheels with 10inch tyres |
Admin (Admin)
Board Administrator
Username: Admin
Post Number: 1095
Registered: 10-2004
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| Posted on Thursday, July 30, 2009 - 11:13 am: |
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The bearings fitted into those wheels are not the best but fine for their intended use. Seeing as you need a higher precision bearing, I would suggest having a fixed axle in the wheel and putting the bearings into your frame. You may be able to change the bearings in the wheels but it will not be easy to do assuming suitable bearings are available.
Flange type bearings would be the easiest way of going for frame mounted bearings but we cannot obtain them above 12mm bore. It also depends whether your frame is large enough to allow for boring out for a bearing. |
Philip Lishman
Unregistered guest
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| Posted on Monday, November 23, 2009 - 2:50 pm: |
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I phoned a few weeks ago looking for some advice, and your (very helpful) staff directed me to contact you here.
I'm trying to build a basic dynamic trolley for a physics experiment, which I want to be both light and low-friction. I've not done this sort of thing before, so I was really guessing about the best way to do it.
My design has a balsa wood deck, 3mm silver steel axles and 4x 4603-008 54mm robotic wheels, which attach by friction to the steel axle.
My problem is that, in order to reduce the friction (and because I wanted to add a ratchet to an axle later), I opted to use bearings and live axles, and I bought 4x 5mm bearing blocks (4604-020) and some collets which I thought I would be able to use to fit the 3mm steels into the 5mm bearings. I was wrong! The outer diameter of the collets is too large to fit the the bearings, so I was hoping you'd be able to advise me how I can achieve this.
I didn't get 3mm bearings as I couldn't see any way of mounting them below the deck, although I did look for pillow housings etc. on the site.
Thanks in advance
Phil |
Admin (Admin)
Board Administrator
Username: Admin
Post Number: 1161
Registered: 10-2004
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| Posted on Tuesday, November 24, 2009 - 8:32 pm: |
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Phil,
I'm afraid the options are limited. You have 3mm axles with 5mm bore bearings. We do not have sleeves to suit so the best way now is to move up to 5mm axles. It's a shame you do not ask before purchasing. You are right, we can only obtain the miniature bearings in 5 & 6mm blocks. If you had purchased 6mm blocks, you could have inserted 3mm bore bearings (plain or flange) into the 6mm bore bearings, crude and will be a tight fit. As you want a live axle, I cannot even suggest bearings into the wheels.
All of our stock tube comes in from the States so is imperial so we do not have a size suitable for making sleeves from that.
As I'm typing, I going through our website looking for ideas. Not ideal again but we do nylon spacers (4607-002 that are 5mm OD, 3.2mm ID so they should fit the bearing blocks but you will still have 0.2mm of play for the axle. It may work and only 82p / pack of 25 (+ carriage).
Regards
Paul |
