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Hey guys,
need to get a belt set for my Uni 3 but more importantly my DB200 so I can run my scroll and circular saw. Does anyone know the sizes? They appear to be 5mm in diameter. I just need to two "standard ones for the DB200 currently. Also sources other than the Greek fella on ebay?
Cheers, Jeff
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Jeff ?Here is what I have on the SL I have purchased from both here:
and here
Both are good to deal with and offer a great product.
?I also use white Buna O rings I got from Ebay. Cheap, grip good and if I get in trouble by trying to bit off too much they will slip a bit.
I copied this down from someplace long ago.
Belts “O” rings
The Motor belt is a MSC 09263344 a size 334 Buna N
O-Ring - 25 pack is $6.77
The large drive belt is MSC 09263393 a size
339 Buna N o-ring - 25 pack is $7.50
The power feed belt is MSC 09262239 a size 232
Buna N o-ring - 50 pack is $5.71
?Jeff
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Jeff,
Have you tried to make your own?
VERY easy to do, cheap ($1.00/ft) and you can make any size you want
to suit your needs.
I bought 4 feet of 4mm round textured polyurethane belting about 10
years ago from McMaster Carr and still have more than half left. All
you need is a knife and soldering iron.
McMaster Carr part number is 8112K32.
Roman
?
Hey guys,
need to get a belt set for my Uni 3
but more importantly my DB200 so I can run my
scroll and circular saw.
Does anyone know the sizes?
They appear to be 5mm in diameter. I just need to
two "standard ones for the DB200 currently.
Also sources other than the Greek fella on ebay?
Cheers,
Jeff
|
Hi Jeff
Sent Doug an email at Homestead. Waiting to hear.
Jeff
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After trying many o-ring sizes I ended up with the following to fit my DB200:
-227 small drive
-237 large drive
My lathe came with a single o-ring that would work on one of the motor pulleys and the matching spindle pulley. This was:
-241 skip idler
Happy turning!
|
It might have been mentioned on this group before, but a very good source of good quality ready-made belts is at Doug Feistamel's site.? I have bought them and think they are very good.
For Doug Feistanel's offerings, here is his Home page (scroll to the bottom to find links to a lot of info he has there)::
Belt page:
Regarding O-rings:? They come in a varous "durometer" ratings (hardness, also called "shore").? I used to work with O-rings for deep sea pressure vessels where the durometer was important.? I'm sure it is less important if using as a belt, but you probably don't want a real hard one (high durometer).? "Shore 70" is a typical garden variety hardness. So, in addition to a size that works on the Unimat, it would also be useful to know the durometer used.? Also, a lower durometer O-ring will be more stretchable.? For example, on the little Manson Duo lathe (later the Master Lathe), they have one belt that can stretch over one of two adjacent pulley sizes for two speeds.
Charles E. "Chuck" Kinzer
On Monday, June 17, 2024 at 07:42:58 AM PDT, MtnMike <ssullivan556@...> wrote:
After trying many o-ring sizes I ended up with the following to fit my DB200:
-227 small drive
-237 large drive
My lathe came with a single o-ring that would work on one of the motor pulleys and the matching spindle pulley. This was:
-241 skip idler
Happy turning!
|
I've bought more than just belts from him. Good guy to deal with, and answers questions by email quick! I've spent a couple hundred dollars with him, and consider every dime of it well spent! Got just about everything I could need to completely overhaul both of my Unimats.
Bill in OKC?
William R. Meyers, MSgt, USAF(Ret.)
Aphorisms to live by: Good judgement comes from experience. Experience comes from bad judgement.? SEMPER GUMBY!
Expect in one hand, expectorate in the other. See which one gets full first.
On Monday, June 17, 2024 at 10:44:21 AM CDT, Charles Kinzer <ckinzer@...> wrote:
It might have been mentioned on this group before, but a very good source of good quality ready-made belts is at Doug Feistamel's site.? I have bought them and think they are very good.
For Doug Feistanel's offerings, here is his Home page (scroll to the bottom to find links to a lot of info he has there)::
Belt page:
Regarding O-rings:? They come in a varous "durometer" ratings (hardness, also called "shore").? I used to work with O-rings for deep sea pressure vessels where the durometer was important.? I'm sure it is less important if using as a belt, but you probably don't want a real hard one (high durometer).? "Shore 70" is a typical garden variety hardness. So, in addition to a size that works on the Unimat, it would also be useful to know the durometer used.? Also, a lower durometer O-ring will be more stretchable.? For example, on the little Manson Duo lathe (later the Master Lathe), they have one belt that can stretch over one of two adjacent pulley sizes for two speeds.
Charles E. "Chuck" Kinzer
On Monday, June 17, 2024 at 07:42:58 AM PDT, MtnMike <ssullivan556@...> wrote:
After trying many o-ring sizes I ended up with the following to fit my DB200:
-227 small drive
-237 large drive
My lathe came with a single o-ring that would work on one of the motor pulleys and the matching spindle pulley. This was:
-241 skip idler
Happy turning!
|
Those sizes sound very small. My SL1000 uses a? 341 O-ring.
The size you quote is very far off what I saw on my lathe.?
toggle quoted message
Show quoted text
After trying many o-ring sizes I ended up with the following to fit my DB200:
-227 small drive
-237 large drive
My lathe came with a single o-ring that would work on one of the motor pulleys and the matching spindle pulley. This was:
-241 skip idler
Happy turning!
|
Hi guys
I used to buy o rings belt properly made belts, then the ? came on!!
I now buy 5-6mm polypropylene from any plastic company on line, cut it and melt it together any length,?
A bit of a job to start off, but after a bit I got it to work fine?
I now have belts for any combination including the power feed
Byron
toggle quoted message
Show quoted text
On 17 Jun 2024, at 20:01, Andrei <calciu1@...> wrote:
?
Those sizes sound very small. My SL1000 uses a? 341 O-ring.
The size you quote is very far off what I saw on my lathe.?
After trying many o-ring sizes I ended up with the following to fit my DB200:
-227 small drive
-237 large drive
My lathe came with a single o-ring that would work on one of the motor pulleys and the matching spindle pulley. This was:
-241 skip idler
Happy turning!
|
how do you stick the ends together I’ve not had much success with “o ring” kits
toggle quoted message
Show quoted text
On Jun 17, 2024, at 4:02?PM, byron williams <bdkwilliams@...> wrote: ?
Hi guys
I used to buy o rings belt properly made belts, then the ? came on!!
I now buy 5-6mm polypropylene from any plastic company on line, cut it and melt it together any length,?
A bit of a job to start off, but after a bit I got it to work fine?
I now have belts for any combination including the power feed
Byron
On 17 Jun 2024, at 20:01, Andrei <calciu1@...> wrote:
?
Those sizes sound very small. My SL1000 uses a? 341 O-ring.
The size you quote is very far off what I saw on my lathe.?
After trying many o-ring sizes I ended up with the following to fit my DB200:
-227 small drive
-237 large drive
My lathe came with a single o-ring that would work on one of the motor pulleys and the matching spindle pulley. This was:
-241 skip idler
Happy turning!
|
When I join polypropylene? belting material for the smaller sizes(2mm) I cut a vee notch in a pair of pliers- on the ends of the jaws, heat up the end of the belts then close the pliers, this brings the ends together and you should have a donut section that's thicker at the join, trim this off carefully when it's hard with a pair of side cutters and you should get a perfect join, this should also work with thicker belts, that or use a vee groove to keep? the belts aligned? as you slide them together.
how do you stick the ends together I’ve not had much success with “o ring” kits
On Jun 17, 2024, at 4:02?PM, byron williams <bdkwilliams@...> wrote:
?
Hi guys
I used to buy o rings belt properly made belts, then the ? came on!!
I now buy 5-6mm polypropylene from any plastic company on line, cut it and melt it together any length,?
A bit of a job to start off, but after a bit I got it to work fine?
I now have belts for any combination including the power feed
Byron
On 17 Jun 2024, at 20:01, Andrei <calciu1@...> wrote:
?
Those sizes sound very small. My SL1000 uses a? 341 O-ring.
The size you quote is very far off what I saw on my lathe.?
After trying many o-ring sizes I ended up with the following to fit my DB200:
-227 small drive
-237 large drive
My lathe came with a single o-ring that would work on one of the motor pulleys and the matching spindle pulley. This was:
-241 skip idler
Happy turning!
|
toggle quoted message
Show quoted text
On Jun 18, 2024, at 12:22?AM, Peter ashby via groups.io <aescinga.pgen@...> wrote: ? When I join polypropylene? belting material for the smaller sizes(2mm) I cut a vee notch in a pair of pliers- on the ends of the jaws, heat up the end of the belts then close the pliers, this brings the ends together and you should have a donut section that's thicker at the join, trim this off carefully when it's hard with a pair of side cutters and you should get a perfect join, this should also work with thicker belts, that or use a vee groove to keep? the belts aligned? as you slide them together.
how do you stick the ends together I’ve not had much success with “o ring” kits
On Jun 17, 2024, at 4:02?PM, byron williams <bdkwilliams@...> wrote:
?
Hi guys
I used to buy o rings belt properly made belts, then the ? came on!!
I now buy 5-6mm polypropylene from any plastic company on line, cut it and melt it together any length,?
A bit of a job to start off, but after a bit I got it to work fine?
I now have belts for any combination including the power feed
Byron
On 17 Jun 2024, at 20:01, Andrei <calciu1@...> wrote:
?
Those sizes sound very small. My SL1000 uses a? 341 O-ring.
The size you quote is very far off what I saw on my lathe.?
After trying many o-ring sizes I ended up with the following to fit my DB200:
-227 small drive
-237 large drive
My lathe came with a single o-ring that would work on one of the motor pulleys and the matching spindle pulley. This was:
-241 skip idler
Happy turning!
|
Has anybody actually measured the o-rings to determine the correct size for the belts, or are we all operating from second hand information?
toggle quoted message
Show quoted text
cool, thanks!
On Jun 18, 2024, at 12:22?AM, Peter ashby via groups.io <aescinga.pgen@...> wrote:
?
When I join polypropylene? belting material for the smaller sizes(2mm) I cut a vee notch in a pair of pliers- on the ends of the jaws, heat up the end of the belts then close the pliers, this brings the ends together and you should have a donut
section that's thicker at the join, trim this off carefully when it's hard with a pair of side cutters and you should get a perfect join, this should also work with thicker belts, that or use a vee groove to keep? the belts aligned? as you slide them together.
how do you stick the ends together I’ve not had much success with “o ring” kits
On Jun 17, 2024, at 4:02?PM, byron williams <bdkwilliams@...> wrote:
? Hi guys
I used to buy o rings belt properly made belts, then the ? came on!!
I now buy 5-6mm polypropylene from any plastic company on line, cut it and melt it together any length,?
A bit of a job to start off, but after a bit I got it to work fine?
I now have belts for any combination including the power feed
Byron
On 17 Jun 2024, at 20:01, Andrei <calciu1@...> wrote:
?
Those sizes sound very small. My SL1000 uses a? 341 O-ring.
The size you quote is very far off what I saw on my lathe.?
After trying many o-ring sizes I ended up with the following to fit my DB200:
-227 small drive
-237 large drive
My lathe came with a single o-ring that would work on one of the motor pulleys and the matching spindle pulley. This was:
-241 skip idler
Happy turning!
|
I was selling Polyurethane belts for a few years on eBay but finally gave up due to domestic work, mainly garden, took over. Dimensions I used were : ? UNIMAT SL? (dimensions before welding) 310mm and 205mm for the two standard belts
224mm for the Slow Speed. ? UNIMAT 3 & 4 (dimensions before welding)
280mm and 228mm for standard belts
143mm for power feed attachment (3.5mm belting) ? ML-210 VERSIONS OF TOYO, RECORD POWER, PROXXON, SAKAY? 296mm, 275mm and 254mm for standard belts 235mm for Power Feed (3.5mm belting) ? All the above were 5mm belting except for the Power Feed belts marked at 3.5mm. ? It seemed that users wanted the 5mm material, but I use 4mm belting on my SL as it fits the pulleys better than the 5mm and is more than capable of coping with with the cuts I make. ? Don’t make them any longer but you can check my? feedback on eBay? “ SILVERLDZ “ ? Bernard ? ? ? ?
toggle quoted message
Show quoted text
From: AndreiSent: 18 June 2024 15:48 To: [email protected]; jentwistle3@...Subject: Re: [Unimat] DB/SL Belt Sizes? ? Has anybody actually measured the o-rings to determine the correct size for the belts, or are we all operating from second hand information? 
cool, thanks! ?
On Jun 18, 2024, at 12:22?AM, Peter ashby via groups.io <aescinga.pgen@...> wrote:
? When I join polypropylene? belting material for the smaller sizes(2mm) I cut a vee notch in a pair of pliers- on the ends of the jaws, heat up the end of the belts then close the pliers, this brings the ends together and you should have a donut section that's thicker at the join, trim this off carefully when it's hard with a pair of side cutters and you should get a perfect join, this should also work with thicker belts, that or use a vee groove to keep? the belts aligned? as you slide them together. ?
how do you stick the ends together I’ve not had much success with “o ring” kits
On Jun 17, 2024, at 4:02?PM, byron williams <bdkwilliams@...> wrote:
? Hi guys I used to buy o rings belt properly made belts, then the ? came on!! I now buy 5-6mm polypropylene from any plastic company on line, cut it and melt it together any length,? A bit of a job to start off, but after a bit I got it to work fine? I now have belts for any combination including the power feed
On 17 Jun 2024, at 20:01, Andrei <calciu1@...> wrote:
? Those sizes sound very small. My SL1000 uses a? 341 O-ring. The size you quote is very far off what I saw on my lathe.? 
After trying many o-ring sizes I ended up with the following to fit my DB200:
-227 small drive
-237 large drive
My lathe came with a single o-ring that would work on one of the motor pulleys and the matching spindle pulley. This was:
-241 skip idler
Happy turning!
?
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rcjge
Roman Gargulak
MtnMikes.us
Bill in OKC too
John Entwistle
