I think any of the companies selling low costs saws out there,
with China made motors, cheat. There are different grades of
cheating, but they cheat.
Back to you get what you pay for, and they are manufactured to
varying specs, of what is acceptable, and what is not. For most
hobbyists, a Horror Freight, or similar, is fine. It's not seeing
the use of a fab shop, and for a guys home shop, with a little
tweaking, not a biggie. We don't mind tweaking stuff to save a
buck.
If you have more money, buy a Jet. When I bought my Grizzly
swivel-base saw, a Jet just like it, cost over double. The Jet,
has a motor made in Taiwan, like my Jet knee mill, and my Jet
table saw. Higher quality. You pay for it.
Or, you can splurge. Howzabout a Wellsaw, or a DoAll? Quality
gear, all I have been around, but, for a hobbyist, hard to justify
the cost for occasional use.
So.....a low cost saw is a crap shoot. The chance you take. Not
much you can tweak on the motor you get with it. It may
last....and maybe not. :)
Other Bill
On 3/24/2022 3:26 PM, John Vreede
wrote:
Glad to hear it cuts well George.
Your 1HP motor will never heat up on a 4x6, as its only running at
1/3 to 1/2 the load the motor is capable of.
You'd think that Consumer Guarantee legislation would stop the
dishonest practice of inferring that input power is the same as
output power.?
It works like this:?
The maker states the maximum motor current, so you can spec the
supply wiring (I think that's law some places).??
Funny how LOTS of motors just happen to draw 6.8Amps at 110Volts.
So the power drawn from the mains supply is 6.8*110 = 748Watts?
Oh but - WOW -? there are 746W in a horsepower - our motor is 1HP
In reality induction motors are somewhere between 30% and 60%
efficient; the more cheaply made, the lower the efficiency.
So a claimed 1HP motor drawing 6.8 amps might deliver less than
1/3HP
I don't think you'll see motors stating input power as output on
their motor plate, because motor manufacturers are bound by NEMA
and IEC rules to state output (horsepower is a 'rate of doing
work' (ie. its output) not 'rate of consuming power (input).?
But brand owners are not bound like this.?
Check for yourselves The Grizzly 4x6 G0622 (last old style 4x6
that with Grizzly brand - see manual in the Files section) claims
it has a 3/4HP motor and its draws 5A maximum current (5x110=550W
input Watts, divide by 746 = 0.737 - near enough 3/4'HP' so is
clearly input power), while their replacement 3/4HP motor (
draws 10.3A @ 110V (over double!).
Yet even Grizzly are inconsistent with their bandsaws.? The
Grizzly G9742 swivel-base version (?which
has the same sawframe (but maybe not motor) claims a 1/2HP motor
that draws 8.8A @ 110V (= 968W - much more likely)??
Shame and double shame alright Bill, on all those who cheat - jv
