Needs Pictures: 0
Picture(s) thanks: 0
Results 1 to 4 of 4
Thread: Lathe Bed Hardness
-
29th Oct 2020, 01:05 PM #1Banned
- Join Date
- Aug 2015
- Location
- QLD
- Posts
- 735
Lathe Bed Hardness
Got hold of a portable hardness tester and went for a look-see at some of me old lathes.
As the tester works in the vertical I did the testing on the flat part where the tail stock runs on the ways of the V way machines. Due to the wear on the machines not giving a true flat I did multiples of the 5 ping averages - so at best a ball park figure. Note: the flats may not have gotten the same hardening as that of the V ways.
Not knowing much about what the hardness tester read-out were saying, re them HLD’s, and to give a comparison I could relate to, I took a reading of a Taiwan built Hare and Forbes lathe and a 600 Co Taiwan Colchester to give me-self a baseline. Both lathes gave a reading of 755.
1930’s South Bend: 535
Colchester Student: 765
Early Hercus: 530
Hercus 260: 725
1890’s Smellie and Co: 535
Mars: 550
Rexman: 460
Advance: 490
.
-
29th Oct 2020, 01:13 PM #2Most Valued Member
- Join Date
- Jul 2016
- Location
- Melbourne
- Age
- 35
- Posts
- 1,522
Useful information, surprising that all the hardened values are so close
Sent from my SM-G973F using Tapatalk
-
30th Oct 2020, 12:43 PM #3Banned
- Join Date
- Aug 2015
- Location
- QLD
- Posts
- 735
-
5th Nov 2020, 08:35 PM #4Banned
- Join Date
- Aug 2015
- Location
- QLD
- Posts
- 735
Been roaming the industrial waste-lands....me back shed , and got some more numbers...
Nuttall Herbert 1940’s lathe: 490
Kerns Type S bed ways: 420
Hercus mill bed ways: 490
.
Similar Threads
-
Testing material hardness
By Michael G in forum METALWORK GENERALReplies: 23Last Post: 27th Apr 2016, 11:01 AM -
4140 HARDNESS
By morrisman in forum METALWORK GENERALReplies: 15Last Post: 6th Mar 2015, 08:01 PM -
Fun with a hardness tester
By .RC. in forum METALWORK GENERALReplies: 5Last Post: 19th Aug 2012, 07:52 PM -
sheraton bed hardness
By morrisman in forum METALWORK GENERALReplies: 4Last Post: 14th Nov 2011, 08:04 PM -
Rockwell C Hardness Tester
By RayG in forum METALWORK GENERALReplies: 9Last Post: 26th Jun 2011, 01:43 PM