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Leroy,

came across a similar problem on my lathe, except the brass nut did not contain the pin, the pin was separate and basically allowed for a crappy screw alignment when manufactured due to it...

it's holding up well, it should as it's basically the same as POR 15 and aussie made, lucky i came across a thread about POR 15 as it would have been painted with enamel.

painted the lathe...

painted my headstock white using paint thats similar to POR 15 which can be purchased at Auto one.
RustSeal by KBS Coatings - Stop Rust with our Paint / Sealer
...

Gary,
tried it out on a face plate today, as the dam thing didn't fit the spindle.
all went well.

ran some tests using crobalt and sutton M42 HSS on mild steel
keep getting a build up which...

Welder,
any chance of posting the address of the site that you purchased the pulleys.

plan to adapt a wiper motor, to run the top slide.

Brian,
have a BS-5 band-saw.
surprised and happy with the little bugger even though i expected it to be a piece of crap.

on average it could do about 10-12 cuts of 70mm solid round steel...

finally tested crobalt on mild steel.
seems quicker to sharpen compared to HSS.

the finish on a face cut was better than using m42 HSS.
not sure why, but the feel when cutting is smoother...

Gary,
thanks for the tips on the crobalt.
is it better to use crobalt on cast iron, does it need to be ground to a different angle ?

is there a reason they need to be 1.5 inch long ?
when first using the diamond tool holder i cut them short enough so the post can be turned 360 degrees, and sharpened both ends of the tool.
...

my previous lathe (al 960 b ) was noisy and was not a constant whirring noise, sounded more inconsistent like a train on tracks.
never checked the splined gear hub play on the al 960b.

...

Thanks for the tips,

was able to order 200mm o.d., 95mm long, 130mm was way more than needed, the weight is now around 24kg.

checked the swing over the cross slide, 220 is the limit on the...

can a 220mm o.d.x 130mm long, 40 KG round bar be safely held and machined in a 200mm 4 jaw "lathe" chuck ?
need to bore a 40mm hole, the main concern is that it could come loose as there's not much...

RDG have some cheap 1/4" button oilers, not sure about the quality.


Button Oilers

the cross slide should be adjustable if the feed lever is in the long position.

Stupid ?, have you pulled the feed lever in or out sideways when moving it up or down.

what's actually locked up.
are both the long feed and cross feed locked at the same time.

Cleaned the taper using wax and grease remover.
the adapter or testbar would still spin in the spindle if any oil, or the slightest remains of blue were on the taper.
could feel it grab in the...

Check the bottom of the bolt before trying it, as they could have changed the design.

if it's the 960b model which the bolt screws directly into the top slide, it's a normal thread.
needed to tighten the 2 M16 nuts very tight using 2 12" shifters to stop the nuts turning when trying...

called the supplier about the issue, the service tech mentioned that it could not be caused by the bearings or bores being out of line and to email photos of the wear.
decided to take the plunge "as...

lock up 2, M16 nuts (or others depending on the thread) on the bolt, then loosen the post bolt from the lower nut.
edit:
the original bolt took some force to remove.

The test bar was loosening up prior to replacing the bearings.
assumed the test bar or spindle was not ground properly.

had not known about the adapter until getting the lathe running, and test...

looking into it Bryan, though without the means of checking it myself, the quotes are way more than expected.
seriously considering using a fine lapping compound, and constantly switching between...

Stuart,
forget the sandpaper, i think the best thing to use in the spindle is a stick of dynamite

shedhappens,
The adapter was ejecting when in neutral, with no gears meshing when turned by...

Ray,
the spindle itself could be oval, and difficult to measure due to inconsistent jumps,
the reason i asked if it was possible for an egged bore to transfer it through to the spindle taper is...

Stuart, most of the rear surface is making contact, though there was a small patch that seemed to have more blue due to there being less contact, though overall it looked as if 90% of the surface had...

the readings using a test bar were not consistent.
runout is around 0.01mm, though there are inconsistent jumps of +/ - 0.01.
test bar has to be constantly reinserted as it kept coming loose.

spindle and adapter were cleaned, did not have this problem on my previous lathe.
the lathe is new and similar to an al 540, using the adapter supplied with the machine.
The problem gets worse...

attached a pic which shows wear and tear forming on the rear of the MT5 adapter, as well as the spindle taper.
whats odd is that when either using the adapter or MT5 test bar, it loosens up quickly...

yes, it's only 415V, will look into getting another motor.

using a 3kw VSD connected to the UVW1 motor terminals which i believe is the slower speed, 700 rpm and from memory around 1.5KW.
if...

when the spindle reaches a certain speed using the higher gears it starts to slow down a fair amount. switched it off, don't know if it slows to a stop.
the VFD is set to run at a max of 100HZ,
...

My mistake.
PD 026 = 0
( forgot to set it back to 0 after testing)

set PD 030 = 00.0, and now the decelerated stop works when adjusting PD 015.
unsure what other functions were adjusted, as...

Stuart.
PD 15 = 5.5
PD 26 = 1
PD 28 = 0.5
PD 30 = 1.5
PD 31 = 2.0
when running the lathe in the higher gears it stalls after reaching a certain speed, do the accel times need to be reduced ? ...

Adjusted PD 030 and now the braking works, the decel stop and coast settings are correct.
will get back soon with the other settings.

The relay system posted above was only to be used for the...

Stuart.

would be wired so when the switch is in the on position it closes the circuit to activate the relay, which now allows the VFD signal to close the circuit from the relay output.

need...

is there a way to run a larger 12V computer fan from the VFD outputs ?
the original fan is 24V and has a loud vibration.

Stuart,

connected the front panel emergency stop (latch) switch to SPL,PD 049 set to 13.
will change it and use a relay.

Yes, though not yet connected.
the brake won't be used for every...

Stuart,
decided against using the front panel emergency switch to cut the VFD power, as it's only rated at 6A.
wired the emergency stop button to the SPL input.
The only original switch gear...

thanks Stuart,

Will play around with it once it's wired.

Stuart,
the lathe is the same as a 3 phase 540, don't have the 960 anymore.

The front panel ON/ OFF switch would only be used in an emergency, though unsure if cutting the 240v power would...

need help with verifying if the attached remote wiring diagrams of a huanyang vfd are correct.
searched many forums, though no luck in finding a diagram,

multi input settings are

PD 044...

Dean
Ron mack machinery sells that model lathe,
ROMAC CY1640 LATHE

Grahame
your list looks like my to do list.
does the coolant actually cause wear on the ways ?
sorted the problem with...

iron deficiency would be a major problem. :U

Nick,
will check the bearings in a few months and if shows signs of uneven wear may need to take it to an engineering joint to sort it out.

Nick,
your mind's not playing tricks, it only ran about 1/2 an hour.
have finished redoing the headstock, with pics on this thread...

May leave it as a future project, as i need to use the lathe.
will just mark the correct positions on the gear levers.

attached a few pics of the bearing cups.

finally finished the headstock.
here's a few pics

Nick,
Will run it as is, as it now has a fairly consistent reading.
how good is the multimetal expoxy ?
need to fill and drill new gear position holes, as some of the gears are only running on...

Nick,
turned the spindle in the same direction when checking the run-out,noticed the jump on the readings when reversing the spindle,
thought it was normal as it was the same on my last lathe.
...

removed the spindle, gave the bearings a clean and reinstalled them.
measured using a test bar this time and had consistent results.
through each turn now the readings are moving up and down about...

Stuart,
it had the same problem on the original bearings, and in the same area, which is at the top and bottom of the bearing.
had over tightened the original bearings before pulling apart the...