Optimum speed for a linisher belt?

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Optimum speed for a linisher belt?

This topic has 10 replies, 7 voices, and was last updated 19 June 2017 at 13:17 by Martin Connelly.

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15 June 2017 at 18:08 #302696
Andrew Tinsley
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@andrewtinsley63637
I purchased a beautifully made linisher some 35 years ago! It doesn't have a stand or motor.

I have sourced a new 1/3 HP two pole motor and I have a frame from the scrap box, so all I need is a switch, belt, 2 pulleys and a guard.

So my query is what should be the optimum speed of a linisher belt? Knowing this, I can source the correct pulley ratio that is needed. Feet per second is the desired quantity or indeed metres per second!

Thanks in advance,

Andrew.
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15 June 2017 at 18:08 #8753
Andrew Tinsley
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@andrewtinsley63637
15 June 2017 at 19:34 #302707
Clive Foster
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@clivefoster55965
3M reckon around 20 to 25 m/s, say 3,500 to 4,500 ft / min in round numbers, for theirs but they claim much better abrasive performance than other makes.

RJH give 6.5 m/s, 1,200 ft / min in round numbers as the belt speed for their Antelope band facers. As I recall matters their simple flat style bench mount linishers used a 1:1 pulley drive with a 1,440 rpm motor. Not sure on roller diameter. Probably 3 1/2" or 4" so 1,300 to 1,500 ft / min.

Picador used to recommend a 1:1 pulley driver ratio when using a 1,440 rpm motor on their machines whose roller diameter was around 3" if I recall correctly. Comes out to around 1,130 ft/min. 1:1 drive worked fine for me on my Picador.

So somewhere around 1,000 to 1,500 ft/min should work OK. Given the choice I'd go towards the low end.

Clive.
15 June 2017 at 19:38 #302708
Ian P
Participant
@ianp
I imagine the best belt speed varies with the job material and the type of abrasive.

I do have the luxury of my linisher being driven by a variable speed motor and do frequently adjust the speed to suit what I am doing. At low speed with say, a fine belt its possible to get a part to a precise shape or thickness and keep the surface flat and square.

You can probably do a quick calculation of what ready built linishers operate at just by seeing the motor speed rating plate and guestimating the pulley diameter.

IanP
15 June 2017 at 20:09 #302718
Andrew Tinsley
Participant
@andrewtinsley63637
Hello Ian,

I don't have the luxury of a variable speed motor, so I am stuck with what I have, a 2 pole 2880 rpm motor!

Thanks Clive, sounds as if I should go with around 1250 feet per minute. Now to go and find the diameter of the rollers!

Thanks all,

Andrew.
16 June 2017 at 03:11 #302754
Ian S C
Participant
@iansc
not sure of the surface speed, but a belt sander is avialable to attach to a bench grinder(6" or 8&quot, right hand wheel side. Can't remember the size of the driving drum if that matters, could be around 75 mm.

Ian S C
16 June 2017 at 06:12 #302760
thaiguzzi
Participant
@thaiguzzi
Industrial linishers were generally or very close to 1:1, using 3000 (2850) rpm motors. Wheels generally around 10".
16 June 2017 at 09:22 #302777
Journeyman
Participant
@journeyman
I have a Warco BDS460 belt sander / linisher. The motor runs at 2850rpm and drives a 60mm dia roller at 1:1

I dug out my old calculator and worked out that this is a belt surface speed of about 9m/s or roughly 1800ft/min

John
16 June 2017 at 11:19 #302791
Andrew Tinsley
Participant
@andrewtinsley63637
Thanks everyone,

I should have enough info now, great helpful bunch on this forum!

Andrew.
16 June 2017 at 18:17 #302831
Martin Connelly
Participant
@martinconnelly55370
Our work linishers have 2 speed 3 phase motors directly driving 200mm drums with a small degree of crowning. I have not looked at the motor speeds.

Martin C
19 June 2017 at 13:17 #303165
Martin Connelly
Participant
@martinconnelly55370
I have checked the (Marpol) manual for an industrial linisher and it has speeds of 16.5 and 33 metres per second using a 3.37 kW motor running at 1400 and 2800 rpm.

Martin C
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