Sieg X3 Mill Toothed Belt

Sieg X3 Mill Toothed Belt

This topic has 6 replies, 3 voices, and was last updated 5 August 2026 at 19:23 by duncan webster 1.

Viewing 7 posts - 1 through 7 (of 7 total)

Author

Posts
5 August 2026 at 12:02 #859482
Keith Rogers 2
Participant
@keithrogers2
I would appreciate it if anyone can tell me the belt no. and a supplier of a decent quality belt for a Sieg X3 Mill.

A friends mill is eating belts at frightening rate. There is a just discernable no. on one of the existing belts which is 2×65. The 65 is the no. of teeth – fine! The 2 doesn’t seem to equate to anything.

As far as I can tell from a rather chewed up belt it’s 65 teeth x 1/4″ pitch x 9/16″ wide. But no supplier i have contacted have one listed, even Google failed to find any thing like it.

Perhaps a Sieg owner on the forum can help me please.

Regards Keith
Advert

5 August 2026 at 12:23 #859486
JasonB
Moderator
@jasonb
The 2 indicates the pitch as a multiple of pi so 2 x 3.142 = 6.284mm pitch

Mine tend to last 5-6 years so I would be looking for what is shreding the belts including expecting the machine to take too heavy a cut.

Plenty on the likes of Aliexpress just serch for something like “2×65 toothed belt X3 Mill” Great Wall in the link are the same brand ARC and SIEG used to supply
5 August 2026 at 13:09 #859493
Keith Rogers 2
Participant
@keithrogers2
Hi Jason,

Thanks for the quick reply.

We have already checked the belt tracking and pulley alignment and not found anything untoward and my friend certainly doesn’t take too heavy a cut, quite the reverse :-)!

The belts on Aliexpress are listed as 5mm pitch so it looks as if our belt has stretched a lot or possibly was from a bad batch.

I’ll order a replacement and see how we get on.

Thanks again Jason.

Regards Keith.
5 August 2026 at 13:17 #859494
JasonB
Moderator
@jasonb
No it is listed wrongly, these are spares I got from ARC while they still had them, pitch is definately 6.28mm which a lot of people mistake for 1/4″
5 August 2026 at 13:23 #859496
JasonB
Moderator
@jasonb
From an old post of mine, after 6 years use
5 August 2026 at 18:05 #859512
JasonB
Moderator
@jasonb
10 teeth at 62.84 shows no stretch
5 August 2026 at 19:23 #859516
duncan webster 1
Participant
@duncanwebster1
I don’t think toothed belts stretch, they give up by losing teeth or fraying
Author

Posts

Viewing 7 posts - 1 through 7 (of 7 total)

Please log in to reply to this topic. Registering is free and easy using the links on the menu at the top of this page.

Code of Conduct

Latest Replies

Viewing 25 topics - 1 through 25 (of 25 total)

- Topic
- Voices
- Posts
- Last Post
- Carbide tip choice advice info
  Started by: JohnF in: Workshop Tools and Tooling
- 7
- 7
- 5 August 2026 at 19:52
  DC31k
- Clarke 0.50HP 2800 rpm motor behaving oddly.
  Started by: Andrew Tinsley in: General Questions
- 5
- 7
- 5 August 2026 at 19:48
  Andrew Tinsley
- 3/16 x 30
  Started by: Peter Howell 1 in: Workshop Tools and Tooling
- 2
- 3
- 5 August 2026 at 19:46
  Peter Howell 1
- Sieg X3 Mill Toothed Belt
  Started by: Keith Rogers 2 in: Help and Assistance! (Offered or Wanted)
- 3
- 7
- 5 August 2026 at 19:23
  duncan webster 1
- A new Milling Machine
  Started by: Martin Johnson 1 in: Workshop Tools and Tooling
- 8
- 13
- 5 August 2026 at 12:58
  Martin Johnson 1
- Farm Boy 1 2 … 4 5
  Started by: Dalboy in: I/C Engines
- 17
- 119
- 5 August 2026 at 12:39
  Dalboy
- Marv Klotz Calculators for Model Engineers
  Started by: David Banham 1 in: Workshop Techniques
- 7
- 13
- 5 August 2026 at 11:41
  southernchap
- Attempt to fix, or re-purpose, or just scrap?
  Started by: Bill Phinn in: Workshop Tools and Tooling
- 14
- 18
- 5 August 2026 at 10:22
  Hollowpoint
- What the hell is going on with the suppliers??? 1 2
  Started by: Hollowpoint in: General Questions
- 15
- 26
- 5 August 2026 at 09:47
  Bo’sun
- My adventures with a bench top CNC mill 1 2 3 4
  Started by: John Hinkley in: CNC machines, Home builds, Conversions, ELS, automation, software, etc tools
- 9
- 80
- 4 August 2026 at 22:23
  John Hinkley
- Roughing End Mills
  Started by: Colin Teasdale in: Beginners questions
- 8
- 17
- 4 August 2026 at 17:06
  Mark Rand
- Mystery debris?
  Started by: Bo’sun in: The Tea Room
- 14
- 24
- 4 August 2026 at 15:59
  Bo’sun
- Plug & Play controller for a milling machine
  Started by: mhudd500 in: CNC machines, Home builds, Conversions, ELS, automation, software, etc tools
- 3
- 3
- 4 August 2026 at 13:28
  John Haine
- J style indicator holders
  Started by: BOB BLACKSHAW 1 in: General Questions
- 10
- 18
- 4 August 2026 at 11:02
  Howard Lewis
- Thanks to John Haine
  Started by: Michael Gilligan in: Clocks and Scientific Instruments
- 2
- 3
- 4 August 2026 at 10:04
  John Haine
- newbie, with some initial questions about this forum
  Started by: frippy in: General Questions
- 7
- 9
- 3 August 2026 at 19:23
  southernchap
- can anyone make me a file? 3d file
  Started by: Ian Parkin in: 3D Printers and 3D Printing
- 8
- 9
- 3 August 2026 at 16:36
  Gerard O’Toole
- Bleedin’ hydraulics!
  Started by: Kiwi Bloke in: General Questions
- 9
- 16
- 3 August 2026 at 16:20
  Adrian R2
- Myford S7 oil useage
  Started by: AStroud in: Workshop Tools and Tooling
- 5
- 8
- 3 August 2026 at 09:40
  JohnF
- 4¾” 13swg copper tubing?
  Started by: martynt50 in: Materials
- 6
- 7
- 2 August 2026 at 19:47
  martynt50
- Home thoughts from abroad
  Started by: martynt50 in: Introduce Yourself – New members start here!
- 4
- 5
- 2 August 2026 at 13:20
  martynt50
- Why righthand threads? 1 2 3
  Started by: vintagengineer in: General Questions
- 30
- 55
- 2 August 2026 at 13:08
  bernard towers
- Steam pressure guages
  Started by: Peter Venn in: General Questions
- 7
- 8
- 2 August 2026 at 13:05
  Martin Johnson 1
- Lightning 1 2 3
  Started by: duncan webster 1 in: Electronics in the Workshop
- 17
- 66
- 2 August 2026 at 12:43
  Robert Atkinson 2
- Another new member in France
  Started by: jimalm in: Introduce Yourself – New members start here!
- 8
- 8
- 2 August 2026 at 10:49
  Russell Eberhardt

Viewing 25 topics - 1 through 25 (of 25 total)

View full reply list.

Latest Issue

August 2026

Buy Latest/Back Issues

Newsletter Sign-up

Latest Replies