Gifted a Bandsaw

Advert

New Replies

Report Bug

Help/FAQs

Gifted a Bandsaw

This topic has 8 replies, 4 voices, and was last updated 17 May 2020 at 22:00 by woody1.

Viewing 9 posts - 1 through 9 (of 9 total)

Author

Posts
16 May 2020 at 20:18 #472269
woody1
Participant
@woody1
Evening all, hope well and safe.

I was gifted a bandsaw by a relative after mentioning I was saving for a horizontal saw. It's brand new and still in the box! Could anyone point me in the direction of reduction pulley math. I have no problem fabricating the counter shaft I have just forgotten/lost my information. The machine is shocking quality wise (apart from the motor). Two days, I wreckon I can get it all least serviceable.

Thanks,

Woody.
Advert

16 May 2020 at 20:18 #19749
woody1
Participant
@woody1
Counter Pulley Math
16 May 2020 at 21:49 #472295
not done it yet
Participant
@notdoneityet
I think we might need a little more information re any problem with a brand new saw is needing modifying straight from the box. Or am I right in guessing this is a vertical bandsaw for timber?
16 May 2020 at 23:50 #472311
woody1
Participant
@woody1
Sorry, I didn't want to write paragraphs.

Yes! Wood bandsaw "workzone" so Aldi or Lidl special. I'm guessing the motor will be around 1450rpm I'll have a look. I gave it a whirl (no cutting), I'm not impressed even for wood. It's not so much the motor, frame or pulleys, it's more the running gear and especially the quality of the castings!

Would I be correct in saying the castings are heavily toward the zinc side?

It was free, couple of pennies and some time (which i have by the bucket) I wreckon it will be an extra string for my bow.

Woody.
17 May 2020 at 00:39 #472313
Jeff Dayman
Participant
@jeffdayman43397
I find on my bandsaw 150 feet per minute blade speed is good for general cutting of steel, aluminum and copper alloys with a HSS blade. You can work backwards from that knowing your wheel diameter, calculate the circumference of your drive wheel by multiplying pi x diameter, and calculate what rpm will cause the wheel (circumference ) to move the blade 150 feet in 1 minute.

Example:10" dia wheel – has 31.41" circumference. 31.41" / 12 inches to get feet is 2.62 feet.

150 feet/min / 2.62 feet per revolution= 57.25 rpm for 10" dia wheel to give 150 feet/min
17 May 2020 at 00:50 #472314
Jeff Dayman
Participant
@jeffdayman43397
If motor is 1450 rpm the reduction required total is 1450/57.25=25.32:1. You could do very close to this with two 5:1 pulley sets. Drive pulley on motor 1450 rpm 2" dia to 10" pulley (maybe ex old washing machine) has output speed of 290 rpm, a 5:1 reduction. Fixed to the same shaft the 10" dia pulley is on, there is a second 2" pulley, with speed 290 rpm. It could drive a second 10" dia pulley on the saw shaft, a second 5:1 reduction, outputting 58 rpm. Close to the optimal 57.25 rpm in the original calc for a 10" dia saw wheel at 150 fpm. Hope all this helps.

Edited By Jeff Dayman on 17/05/2020 00:52:00
17 May 2020 at 08:37 #472336
not done it yet
Participant
@notdoneityet
Sorry, I didn't want to write paragraphs.

I didn’t. But you do need to give the pertinent details. The bandsaw spec will likely provide the cutting speed. It likely needs a speed reduction of greater than ten. Start by finding the specification for your example.
17 May 2020 at 08:52 #472338
Journeyman
Participant
@journeyman
This one perchance?

Link *** HERE *** no longer available it says.

John
17 May 2020 at 22:00 #472544
woody1
Participant
@woody1
Cheers guys, just the information I needed, yes that exact one! I'll start on it this week firstly I'm going to sort the guides and add some bearings, its quite loud.
Author

Posts