Re: Older Rongfu RF-115 bansaw details required
|
Hi Chris Sorry I took so long to reply, been out of the loop just lately. Bill has the right of it, the play in the guides/tensioner guide block gets pulled out when the blade is under tension and the whole assembly goes rigid.? Mine is as loose as too and that has no effect on the cutting If your saw is throwing blades when in the cut, that's more likely to do with the lower (drive) bandwheel, not the upper (driven) one.? The rear support roller that pushes the blade/teeth into the cut is likely too far forward.? If the bearing bracket, that carries both the rear and side guide rollers (those ball bearing races),?has been adjusted too far forward on the tongue?and groove joint (between the bearing bracket and the support arm), when the weight comes on in the cut that lower rear roller acts as a pivot to lever the blade off the drive? wheel. So the blade will track OK when not in the cut but pops off when it is cutting, Can take a few revolutions of the blade before it comes off, but you can see it slowly derail if you look where the blade rides on the drive bandwheel. - jv?
[Edited Message Follows]
Thanks for the info, the all play is what I wanted to know about. The blade tightning I can control by tightning it, the blade tilt I can control by adjusting a bolt & grubscrew, however the play thats in the direction not covered by above adjustments I have no way to control.
Your experience is good to know.
I did an experiment and will know later on if it bad or good outcome when I actually saw with it. I got this bandsaw because it thrown blades. It seems the previous owner replaced the slave wheel bush, which is new and has no play, I just made a proper spacer to take out the endplay here. I also corrected the main wheel/gearbox bearing assembly to the best of my ability. If it stay put when in use what I have done will be the selution.
Temp Mod(Experiment):I decided to make two new plates at slave wheel a bit thicker and milled down, so that it slide with zero play, busy today with this. When in use I will know if this mod was any good, if not I revert back to original plates. With this zero play, I can still adjiust the blade tention, and the blade tilt, just from a zero play base.
On Thu, Nov 30, 2023 at 1:16?AM Bill Armstrong < bill_1955@...> wrote:
I have a Grizzly 5 x 6, and with the blade removed, the idler has play all over the place. Pick a axis, it moves in any. It all goes away once you install the blade and tighten it, and has never been a problem in the 15+ years I’ve had the saw. ?
?
Other Bill
?
[Edited Message Follows]
Previously:
I made a bracket that swivel on top of compressor(Silenced) cabinet, of which in turn the top can open up like a car bonnet to access compressor parts to remove/repace when needed. The bansaw in turn can swivel up and vertical out of the way to reveal a top stainless steel tray for use if needed.
Installing the bansaw(Refurbishing) on top of compressor:
Hi, back at the bandsaw. I would like to know about the play in the slave wheel alignment adjustment device. I understand the Tention of the blade adjustment and movement, as well as the Blade Tilt adjustment with fasteners "C & "B" in photo edited it swivel around "A".
Problem:Play in Blade tilting device I cannot adjust, is it normal or a problem-?
<0_Play-AdjustableFrontWheelDevice.jpg>
?
What I don't understand is the amount of play up/down as indicated in purple when you pull up & down on pulley or pully shaft with pulley removed. I would say mine has excessive play here, which I cannot adjust. Before I make some mods with milling machine, I would like to hear your opinion around this-?
Thankyou
Chris
?
?
|
John Vreede