Cart is empty
Home
SupportOld Support Forum Archive - Info OnlyTransmission (Bearings, gears, sprockets & wheels)Axles and Couplings
SupportOld Support Forum Archive - Info OnlyTransmission (Bearings, gears, sprockets & wheels)Axles and Couplings
Axles and Couplings
| Technobots FAQ » Transmission (Bearings, gears, sprockets & wheels) » Axles and Couplings | « Previous Next » |
| Author | Message | ||
| Caradocrouse (Caradocrouse) Member Username: Caradocrouse Post Number: 1 Registered: 6-2006 |
I bought a 3mm - 4mm coupling from you recently, and the fit doesn't seem very good - the 4mm side is a good snug fit but the 3mm side is very loose on the axle I have. I have measured the 3mm side and it seems somewhere nearer 3.5mm (but the 4mm axle I have won't fit in to it so it's not a 4mm - 4mm coupling). Is this always the case or do I have a faulty product? |
||
| Admin (Admin) Board Administrator Username: Admin Post Number: 211 Registered: 10-2004 |
Hi, It certainly would not be unreasonable to expect these couplings to be machined to an accurate size and this is the first time this has been raised. Return the coupling to us and we will investigate and replace as necessary. Please accept our apologies for this. Unable to Email you direct as you did not leave an Email address. |
||
| Admin (Admin) Board Administrator Username: Admin Post Number: 221 Registered: 10-2004 |
Hi, We have received back the coupling and it is actually a 4-4mm. We have checked our stocks to find they are all 4-4mm. Clearly they have been packaged incorrectly by the manufacturer. We will get new stocks in and send you a replacement asap. Apologies for this and thank you for bringing it to our attention. |
||
| chris Unregistered guest |
hey all, i need to build a kit for a camera dolly, 4 pneumatic wheels affixed to 2 axles, then those attached to a wooden platform, real simple, i can choose tyre etc but then dont know the best way to attach it all, if anyone can make a list of stuff i would be grateful, thank you. |
||
| Admin (Admin) Board Administrator Username: Admin Post Number: 246 Registered: 10-2004 |
Chris, I assume that the wheels are not motorised and that the wheels have internal bearings. If this is the case then all you need is axles fixed to your wooden platform using anything suitable such as 'U' bolts. If you need the axle to be able to rotate then pillow block bearings are ideal. We stock both pressed steel and cast steel. Not sure if that answers your question. |
||
| Dave Todd Unregistered guest |
Can you provide an axle some 2'6" long threaded at each end to take a bicycle wheel. This is for a music trolley which has got too heavy for wood on its own to support Thanks |
||
| Admin (Admin) Board Administrator Username: Admin Post Number: 314 Registered: 10-2004 |
Dave, No promises but we may be able to help. In our move to new premises recently we manage to find room for a small workshop with a couple of lathes and a milling machine. What diameter axle do you need and what threads on the end? Also what material do you need, can it be mild steel? A sketch would help. Regards |
||
| Liz Hawkes Unregistered guest |
I have got a motor with a 8mm shaft and I am trying to get a inline coupler fot this would you know of anything that I can use that would be suitable. |
||
| Admin (Admin) Board Administrator Username: Admin Post Number: 882 Registered: 10-2004 |
The largest couplings we have are 6mm although we have been asked for 8mm before. It is possible that the 6mm coupling could be drilled out to 8mm bore. Take a look at 4604-004, whilst I do not have the overall diameter to hand, the large photo looks like it will take being bored out to 8mm. |
||
| Rangaswamy Unregistered guest |
Can you please send me a dimensional drawing of an Inline Coupling 3mm to 3mm - Part No: 4604-001? I need this to use in my design of a fixture. How to get the dimensional details for other items in your website? |
||
| Admin (Admin) Board Administrator Username: Admin Post Number: 911 Registered: 10-2004 |
Hi, Sorry but no drawings available for this range of products. If you need the physical dimensions let us know and we will measure a coupling for you. |
||
| Peter Litten Unregistered guest |
I want to use one of your stepper motors to drive the model I am making and need to attach a gear adaptor to the 5mm shaft. As there isn't a 5mm adaptor should I order a 4mm one and drill it out? |
||
| Admin (Admin) Board Administrator Username: Admin Post Number: 999 Registered: 10-2004 |
Peter, I'm a little uneasy with drill out the 4mm model to 5mm bore as the threaded section is only M6 making the wall thickness rather too thin. As an alternative, you could drill out the 4mm Pololu hubs 4609-104 to 5mm. Also, is there any way you can utilise the 5mm coupling 4604-006? |
||
| lance deller Unregistered guest |
would it be possible to drill out the 4mm side to 6mm on this coupling Inline Coupling 3mm to 4mm - Part No: 4604-009 thanks lance |
||
| Admin (Admin) Board Administrator Username: Admin Post Number: 1054 Registered: 10-2004 |
Lance, The OD is 8mm leaving a wall thickness of 1mm which is insufficient, so no, not really. |
||
| Thomas Willers Unregistered guest |
Dear Technobots, A quick question about your "zinc collars" Are these zinc plated steel, and so could be welded, after the removal of the coating, or not. I need a way to attach a drive wheel to a live axle, and so think i can weld the collar to a steel plate, to bolt onto a steel rim wheel. Many thanks. Thomas Willers |
||
| Admin (Admin) Board Administrator Username: Admin Post Number: 1256 Registered: 10-2004 |
Yes, the collars are BZP steel. You would need to remove the plating before welding due to the zinc fumes that are hazardous. |
Electrical
Electronics
Mechanical
End of Line Savings
Shipping
| UK 1st Class Letter Post from £2.95 incl UK Carrier from £6.95 EU from £4.95 incl Worldwide from £5.95 FedEx to 50+ countries USA from $21 No minimum order value |
Site news
- 16/04/2012 Website Improvements
- 31/03/2012 Royal Mail Price Hike
- 22/03/2012 Avast Anti-Virus False Warning
- 15/03/2012 What's Coming Up
- 16/11/2011 Site Downtime
Mailing lists
Just a few of the companies Technobots are an official distributor for:
 |