• This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn more.
  • PLEASE SUPPORT OUR FORUM - UPGRADE YOUR ACCOUNT HERE!
[4]

Query re Dimensions of Front 'V' Way of Grizzly G4003G Lathe

[3]
[10] Like what you see?
Click here to donate to this forum and upgrade your account!

Xiansheng

Congming
Active Member
Joined
Mar 8, 2014
Messages
39
Likes
1
#1
Hi Everyone,

I wonder if SKS (some kind soul) would mind giving me a little help? I would like to obtain the dimensions of the front V way on the Grizzly G4003G lathe, as indicated in pink on the attached image below.

Thanks very much.

Regards, Xiansheng
Way Outline Way Shape Outline Without Dimensions.jpg
 

Xiansheng

Congming
Active Member
Joined
Mar 8, 2014
Messages
39
Likes
1
#2
In the absence of any replies to my request for help, in case anyone thinks I am lazy, I live in Australia and therefore can't directly access the Grizzly lathe. My reason for asking for this information to make a comparison with my lathe, because I believe the AL906B available in Australia is essentially the same machine.

Regards Xiansheng
 

Ray C

H-M Supporter - Sustaining Member
Staff member
H-M Supporter - Sustaining Member
Joined
Nov 16, 2012
Messages
5,125
Likes
1,183
#3
Xiansheng,

I did a little poking around. The two lathes seem to be the same pattern but... The Griz lathe is made in China and the brand with the model number you mention, sold in AU, is made in Taiwan. Most modern 12x36 lathes have the same basic way-pattern but bed widths vary with most ranging from 7" to 7.5". On most lathes made in China, casting, basic grinding and hardening is done in 3 different factories. Finish grinding is usually done in the factory that assembles the lathe. It's hard to say if the way-V's were ground identically.

I don't know if you're looking for approximate dimensions or exact dimensions but, enclosed are the dimensions from my PM1236 lathe that was made in China about 7 years ago. The dimensions were read with reasonable care using depth mics and calipers. The units are inches and it it looks like the part was setup in inches because the numbers were all very "even".

If other people could measure the V on their 1236 Chinese lathe, we might get an idea if they all strive to be the same or not.


Regards

Ray
 

Attachments

Xiansheng

Congming
Active Member
Joined
Mar 8, 2014
Messages
39
Likes
1
#4
Hi Ray. Thanks for providing details of your PM-1236 V profile. It is quite different from mine. I was surprised to see that your V isn't 90 degrees, but 70. I would have thought that a 90 degree V was the easiest to manufacture. A 70 degree profile like yours would increase the weight of the saddle normal to the V flank, but would that provide any benefit?

I am still hoping for details of the profile of the front way of the Grizzly G4003G, if anyone has details to share.

Regards

Xiansheng.
 

Richard King 2

Master Machine Tool Rebuilder & Instructor
H-M Supporter - Commercial Member
Joined
Feb 1, 2018
Messages
210
Likes
217
#5
Have you written Grizzly ? See if the sell Tailstocks or a steady rest, to fit your lathe and you can send them a diagram of yours to check if it will fit.
 

Xiansheng

Congming
Active Member
Joined
Mar 8, 2014
Messages
39
Likes
1
#6
I am in Australia, so I am uncertain if this approach will work, but it is possibly worth a try.
 

GSWayne

Iron
Registered Member
Joined
Apr 6, 2014
Messages
21
Likes
4
#7
Starting at the top left colored section, the dimensions on my Grizzly G4003G from 2014 are: .336" horizontal then .125" vertical, then 3.93" sloping up, then .197" horizontal, then .416" slanting down, then .756" vertical, then .784" horizontal. These are not easy to directly grab with the calipers, so they are a bit approximate.
 

RodSME

Steel
Registered Member
Joined
Jun 7, 2014
Messages
29
Likes
23
#8
Xiansheng, attached is a .pdf of a drawing of what I hope are the pertinent dimensions of my Grizzly G4002. I measured my lathe and drew the machine in SolidWorks to design accessories for the lathe. I don't know that the 4002 has the same dimensions as the 4003, but it would be a good guess that they are the same. I know I used english rather than metric. We here in the States are only about a century behind. I also included a .jpg of the lathe showing a tool post grinder that I designed. I've used the grinder to do a few jobs and it has worked OK. If you need other dimensions, let me know.
 

Attachments

Xiansheng

Congming
Active Member
Joined
Mar 8, 2014
Messages
39
Likes
1
#9
Starting at the top left colored section, the dimensions on my Grizzly G4003G from 2014 are: .336" horizontal then .125" vertical, then 3.93" sloping up, then .197" horizontal, then .416" slanting down, then .756" vertical, then .784" horizontal. These are not easy to directly grab with the calipers, so they are a bit approximate.
Hi Wayne. Thanks for going to the trouble of measuring your lathe. Unfortunately even allowing for your measurements being "a bit approximate" they are a lot different from mine. Regards Xiansheng.
 

Xiansheng

Congming
Active Member
Joined
Mar 8, 2014
Messages
39
Likes
1
#10
Xiansheng, attached is a .pdf of a drawing of what I hope are the pertinent dimensions of my Grizzly G4002. I measured my lathe and drew the machine in SolidWorks to design accessories for the lathe. I don't know that the 4002 has the same dimensions as the 4003, but it would be a good guess that they are the same. I know I used english rather than metric. We here in the States are only about a century behind. I also included a .jpg of the lathe showing a tool post grinder that I designed. I've used the grinder to do a few jobs and it has worked OK. If you need other dimensions, let me know.
Hi Rod. Thank you for the detailed drawing of your lathe bed and the V way. I compared it to mine and although superficially similar, there are numerous differences of a millimeter or less. So close - but not the same. I am rather interested in the tool-post grinder you have designed and built. Is there a photograph you can post of the actual grinder? That's something I need to do. Regards Xiansheng.
 

Xiansheng

Congming
Active Member
Joined
Mar 8, 2014
Messages
39
Likes
1
#11
Looks like comparing my lathe bed with the Grizzly G4003G lathe bed is not going to happen. . . . . .
 

Mitch Alsup

Active Member
Active Member
Joined
Nov 17, 2017
Messages
162
Likes
112
#12
I finally got back from a trip and into the shop. I took these measurements::

Top of the V-way:: 0.190
Height of the V-way:: 1.005" all the way to the bottom
Width of the V-way:: 0.725
Angle of the V-way:: 42.5º where 90º is straight up

Width of the depression and flat-way:: 1.305
Width of the depression:: 0.345
Width of the flat-way:: 0.815 not including the 45º bevels.

Note: these were taken with a dial caliper and are +/- 0.003" accurate.
For the most part the measurements do not disagree with the ones above, but they are not close enough to confirm either.
 
[6]
[5] [7]
Top