Spur gears

[Frank SloanParticipant @franksloan89570]

[Frank SloanParticipant @franksloan89570]

Wears the best place to get spur gears

I cant make them i dont have the skill

Yet or the tools.

[Bo’sunParticipant @bosun58570]

I guess that depends on what you want them for. If it's custom made gears, any respectable toolroom should be able to help (or point you in the right direction), but they're not going to be inexpensive.

[IanTParticipant @iant]

I've used HPC in the past Frank – and have been very happy with both their products and service.

Regards,

IanT

[Keith LongParticipant @keithlong89920]

Another one to look at is Technobots . They do all sorts of gears pulleys etc at very reasonable prices – just a satisfied customer.

[BazyleParticipant @bazyle]

Another commercial supplier is Davall Gears. I think they also import Boston Gears.

A few years ago I was looking at a machine from the '20s and was told it used Boston Gears. I found a reference number for a bronze gear on the machine and the same one was still in their catalogue. Only trouble was with shipping it was staggeringly expensive.

[Keith LongParticipant @keithlong89920]

Sometimes you can buy from Boston Gear via Amazon. Last year I bought a pinion to mesh with the rack on my Drummond M type lathe. The total coat delivered to me was under £25 which I thought was pretty good. The advantage was that Boston Gear still do 14.5 deg. pa. gears as stock items and generally to imperial dimensions not just metric.

 

edited for spelling.

Edited By Keith Long on 25/03/2020 11:34:29

[duncan webster 1Participant @duncanwebster1]

I've used Reliance Gears, cheaper than HPC and good quality. I think this is the correct link **LINK**

[Frank SloanParticipant @franksloan89570]

Thankyou everyone the gears have a 14.5 pa

So i will try some of the companys you suggested .

[Andy CarlsonParticipant @andycarlson18141]

Mine came from HPC.

Regards, Andy

[Frank SloanParticipant @franksloan89570]

Hpc do not do them anymore they are only air

Tool and compressors .

[Howard LewisParticipant @howardlewis46836]

What do you want to do with the gears?

Gears for Myford 7 Series lathes are 20 DP, 14.5 DP, so may be available, new, from RDG who ,own the Myford brand, and will certainly be available secondhand from various suppliers.

Other British lathes may well have also used gears with 14.5 PA., so may be available secondhand, but possibly more expensively, because of their comparative rarity.

Howard.

[JasonBModerator @jasonb]

HPC do plenty of spur gears as well as other items but all their DP gears are 20pa. unless you want to pay for specials.

If you say what gears you are after and what they are for there are a few suppliers that still do 14.5pa such as the above mentioned Boston gear who are available from GMB assoc here in the UK.

Edited By JasonB on 25/03/2020 17:15:06

[not done it yetParticipant @notdoneityet]

Sorry, I don’t understand your last message. HPC will make most gears to order. Not cheap, mind. Do you mean the gears you require are for air tools and compressors?

Another alternative, depending on the duty, might be 3-D printing.

Even with just a lathe (a mill is easier for gear cutting) they can be cut with a little ingenuity. See you tube for videos. I know xynudu has cut gears on more than one video.

Involute cutters can be made in the workshop but are only generally about £20 for most smaller sizes.

[Frank SloanParticipant @franksloan89570]

I called hpc and he said the engineering side had stopped it must have been the wrong hpc i called lol oops.

[Frank SloanParticipant @franksloan89570]

Hi thanks to you all again i have an old rolling mill

A durston but they say they have no parts for my model t pinion shaft has sheared all the teeth and damaged some other gears sorry for my lack of knowledge.

[Frank SloanParticipant @franksloan89570]

The pinion.

[Andy CarlsonParticipant @andycarlson18141]

Posted by Frank Sloan on 25/03/2020 17:05:01:

Hpc do not do them anymore they are only air

Tool and compressors .

I think you must be looking at the wrong company

https://www.hpcgears.com/

[not done it yetParticipant @notdoneityet]

If you can provide details of the gears (tooth counts and an accurate outside diameter of at least one gear plus thickness and central hole size with drive details) you may get an offer of a new set of gears in this time of social isolation.🙂. A location might help, too

[Frank SloanParticipant @franksloan89570]

When you say drive details what exactly do you mean sorry.

[Frank SloanParticipant @franksloan89570]

Im in Essex il try and get some tomorrow

Thanks.

[JasonBModerator @jasonb]

Does the hole have a keyway slot or some other spline shape to stop the gear rotating on the shaft is what was meant.

[not done it yetParticipant @notdoneityet]

I meant exactly what I wrote as in ‘How are the gears driven’. I did not mean anything else in the context of the reply.

The pinion may be mounted differently (pinned?) or the gears may even be secured and driven by a grub screw (or two). Some shafts have a flat and the gear a non-circular hole. All depends on how the mill was constructed. I would expect Durston to have provided substantial gear fixings of a regular form (not Mickey Mouse build like some modern-day items).

[Michael GilliganParticipant @michaelgilligan61133]

Posted by not done it yet on 26/03/2020 08:09:20:

I meant exactly what I wrote as in ‘How are the gears driven’. […]

.

Possibly more ambiguous than you think ?

Q. How are the gears driven ?

A. By an electric motor, Sir

etc. etc.

MichaelG.

[Frank SloanParticipant @franksloan89570]

Sorry i see now it is driven by electric motor and the

Shaft has a key way and splins cut into it il take some pics later to show thankyou for your patience

With me.

[Author]

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