Pneumatic Wheels

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James Smith-Pryor
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Posted on Friday, November 4, 2005 - 3:45 pm:    Edit Post    Move Post (Moderator/Admin Only)

Looking to buy 10" wheels for a barrow I'm making either puncture proof of pneumatic. What do I need to use for axles? Saw one of the wheels statd 19-mm bearings but I cant seem to find 19-mm steel anywhere. Is the bearing size the aperture size?
Admin (Admin)
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Post Number: 88
Registered: 10-2004
Posted on Sunday, November 6, 2005 - 6:59 pm:    Edit Post    Move Post (Moderator/Admin Only)

James,

Typical axle material is silver steel or for heavy duty applications EN24T.

The wheels we currently stock have either a 5/8" bore or a 19mm bore. This means the axle diameter has to be slightly under this dimension.

The bearings are not especially accurate with respect to the bore size. The 5/8" is a nominal 15.875mm and some customers have used 16mm silver steel with these. This may mean turning the diameter down slightly on a lathe or with some wet and dry paper.

Hope that is of some help. See http://www.technobots.co.uk/contents/en-uk/d472.html for silver steel.
robin rice
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Posted on Wednesday, January 31, 2007 - 2:31 pm:    Edit Post    Move Post (Moderator/Admin Only)

will the 10" pnumatic wheel berings last long at 15~20mph i made a mini bike with cheap wheels of ebay but the berings wer crap and started faling out :-(
Admin (Admin)
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Post Number: 383
Registered: 10-2004
Posted on Wednesday, January 31, 2007 - 7:08 pm:    Edit Post    Move Post (Moderator/Admin Only)

Let's be honest, these wheels are rather cheap and cheerful and designed for trolleys etc. However, we have had customers use them for everything from sand yachts to scooters. The quality of the bearings fall far short of that you get from our standard range of individual bearings. Nothing wrong at all with the hub and tyres and the bearings are fine for most applications but don't expect too much for a tenner really. We have used them extensively in robots for years without bearing failure and will continue to do so.
andre muraille
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Posted on Sunday, May 6, 2007 - 2:39 pm:    Edit Post    Move Post (Moderator/Admin Only)

hi, I need 2 wheels to replace on chinese mower tyre size is 4.10/3.50-4 the spindle is 20mm
is this possible, or as wheels are OK, just change the tyre & tubes thanks
Admin (Admin)
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Username: Admin

Post Number: 478
Registered: 10-2004
Posted on Monday, May 7, 2007 - 6:13 pm:    Edit Post    Move Post (Moderator/Admin Only)

Hi Andre,

Certainly none of our pneumatic wheels have a 20mm bore. However, you can easily remove the tyre and tube by unbolting the 4 bolts that sandwich the two halves of the hub together. Just be aware of the two types of tread pattern we have and that the air valve has a 90 degree set in it on the non-offset type wheels.
Mr Alan Relf
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Posted on Sunday, June 17, 2007 - 9:17 am:    Edit Post    Move Post (Moderator/Admin Only)

Dear Sirs
Re the Pneumatic Wheels that you advertise priced at approx 11 Pounds etc, do they come complete with Tyre and Tube ?
My tyre size is 4.10/3.50-4
Thankyou
Admin (Admin)
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Username: Admin

Post Number: 507
Registered: 10-2004
Posted on Tuesday, June 19, 2007 - 9:35 pm:    Edit Post    Move Post (Moderator/Admin Only)

Alan, They certainly do include tyre, tube, hub and integral bearings.

Regards, Paul
trevor chambers
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Posted on Tuesday, August 14, 2007 - 11:30 am:    Edit Post    Move Post (Moderator/Admin Only)

I am trying to build a powered go kart for garden use. Wheels part number 4260-002 are stated as being intended to be supported from both sides. Part no 4260-001 doesnt carry this comment. What is the difference between these tow wheels? Is 4260-001 suitable for mounting at tne end of an axel as would apply on a go kart?
Admin (Admin)
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Post Number: 555
Registered: 10-2004
Posted on Tuesday, August 14, 2007 - 9:57 pm:    Edit Post    Move Post (Moderator/Admin Only)

Trevor,

Thank you for your enquiry. The two types are offset and non-offset. The non-offset have a boss protruding from both sides of the wheel into which is inserted a bearing at each end. This type of wheel is used between forks i.e. wheel barrow style. The offset type has a protrusion on one side only and again has a bearing in the end, it also has a bearing on the other end of the same protrusion which finishes in the centre line of the wheel. It's hard to explain but basically this wheel is designed to be supported from one side only.