Grinder selection

gunfixrjoe

gunfixrjoe

Joined
Aug 11, 2011
Messages
2,553
I know this has been asked millions of times, but here goes..... I will soon finally be purchasing a good grinder. I've been researching for months, reading and watching video reviews. I'm down to 2 choices that I think I want. Its between the Northridge and the Ubergrinder. Any and all input will be greatly appreciated. Please help me decide. The vast experience you all have is always a great benefit of being a member here.

Thank you in advance
 
I think this is the most complete machine with all accessories and VFD
http://volf48grinders.com

ÜberGrinders ---- base price 2200$
include:
  • Complete frame. Rotates 90 degrees, locks in either position, 3 receivers for positioning the tool and workrest arms to suit your preference. All adjustments are made without tools.
  • Crowned, urethane drive wheel. Keeps the belt from slipping even under low tension, high torque operation.
  • Pneumatics for belt tension. High quality Mead/Bimba regulator and cylinder.
  • Überrest (Articulating work rest with steel table, vernier scale for accurately adjusting in 1 degree increments. Again, no tools required.)
  • Platen/Slack Belt Attachment. Improved this time around to work better as a slack belt attachment with the removal of the platen via 2 screws. Also, new shop made wheels make the belt lie flatter against the platen than before, with less ‘puckering’. You’ll really appreciate this when using fine, flexible belts. (Requires a wrench to switch between platen/slack belt operation)
  • Small Wheel attachment. (Small Wheels not included)
  • Arm and hardware for mounting a Contact Wheel.
  • VFD bracket for mounting your VFD to the grinder itself, or to your bench.
Volf48Grinders ----complete 1880$
include:

The main product I offer can achieve a 90 degree rotation and a variety of attachments can be applied. The whole kit weighs around 105 kg and it includes: the main machine, a straight grinding attachment (l=300mm), concave bevel wheel (d=250mm), 3 small rollers (d=15mm,28mm,34mm). A larger wheel (d=450mm) can be mounted as well on the main machine.
The product is crafted to a high standard. Thickness of the steel used – 3,4,6,8,10,25,30 mm. The body represents a tightly conjugate space framework. The supports sections are 25x25mm and 30x30mm. Steel used – C45. The large wheel is produced in Italy from aluminum and has a rubber ring running along its circumference, with hardness approximately 85 Shore units.
Its 1,5 kW engine runs on three-phase current and can achieve 2870 RPM. A frequency inverter controls the band speed from 7 m/s to 28 m/s. These velocities can be adjusted to the client’s preferences.

it is only a question of shipping and possible duties o_O
 
My main concern with the volf48 would be if something went wrong with the vfd or motor, the return shipping both ways could get very costly and long down times with intercontinental shipping. Between the two you mentioned I would go for the uber, but my first choice is always a tw-90. I have 4 grinders and my tw-90 is by far the most versatile and easiest to set up for different grinding operations + it comes complete with small wheel attachment and contact wheel.
 
A third option is the Pheer 454. I bought mine as an upgrade to a Craftsman 2x42, came with a top of the line 1 hp wet/washdown motor, a VFD (KB-24) and excellent instructions/support (as well as 2 belts in the box). a steel at $1500! (steel/steal, get it :) )
 
I just ordered a new top model Bee yesterday morning. But from what I've seen if I lived in the US rather than Canada, I'd probably have bought either a tw-90 or an outlaw II.
 
So far all I can tell is that both of the choices I was looking at, the Northridge and Ubergrinder, are not the ones I should be looking at....
 
Hey Joe...Not true Every Maker has their Favorite...I have 3 machines and if I need to replace one in the near future it will be with either a Northridge or TW-90. I don't have either of them but I have a name brand which will remain nameless so as not to confuse the issue. It's a leap of when you purchase one these high dollar machines so pick a company with GOOD Customer Service.
 
Busto said:
Hey Joe...Not true Every Maker has their Favorite...I have 3 machines and if I need to replace one in the near future it will be with either a Northridge or TW-90. I don't have either of them but I have a name brand which will remain nameless so as not to confuse the issue. It's a leap of when you purchase one these high dollar machines so pick a company with GOOD Customer Service.
Click to expand...

Good customer service is always a wonderful thing.
 
I will throw another name in ring. I like the Wilmont LB1000, there are a few left before it goes into redesign. I have had one for four years, no issues. the grinder is $800+ shipping. add a motor and VFD for $400 or less and you are in business.
 
I have a Hardcore and I love it. I only use it with the contact wheel.
I have a Pheer 427 and use it for flat grinding.
I have a Grizzly that I use for bot contact wheel and platen grinding.
I like them all!
 
Busto said:
It's a leap of when you purchase one these high dollar machines so pick a company with GOOD Customer Service.
Click to expand...

This is true. I recently bought mine after reading just about every 2x72 thread on here. I was between a Pheer and a Northridge. Went with Pheer due to customer service. I hear Northridge has good customer service though, so maybe my experience wasn't the norm.
 
Forgive me if I am out of place here. First time on this forum . I am in the process of assembling a grinder and this is what I have on order. Reeder RPS101 2 X 72 Belt grinder, KBAC 27D VFD, and a Hallmark Industries 2HP, 3450 RPM, 3ph/60hz, 208-230/460VAC, 56C/TEFC, Inverter Duty AC motor. Any opinions on this setup, particularly the 3450 RPMs . Don Reeder from Reeder Products Inc told me that I should go with the higher rpms instead of the 1725 rpms. Any thoghts.
 
Cuchillo59 said:
Forgive me if I am out of place here. First time on this forum . I am in the process of assembling a grinder and this is what I have on order. Reeder RPS101 2 X 72 Belt grinder, KBAC 27D VFD, and a Hallmark Industries 2HP, 3450 RPM, 3ph/60hz, 208-230/460VAC, 56C/TEFC, Inverter Duty AC motor. Any opinions on this setup, particularly the 3450 RPMs . Don Reeder from Reeder Products Inc told me that I should go with the higher rpms instead of the 1725 rpms. Any thoghts.
Click to expand...
The 3450 RPM will work. I have a 1725 RPM motor that is practically identical otherwise on mine. I set my VFD to run double speed, so I'm still getting the 3450 RPMs. The benifit of the slower motor is to maintain torque at slower speeds. Below 3450 RPMs on a 3450 motor, you will lose torque. You maintain the torque on a 1725 motor until you drop below the 1725 RPMs. At least this is how I understand it. It has to do with the number of poles in the motor (2 pole = 3450 RPM, 4 pole = 1725 RPM). Maybe somebody can explain better than I can.
 
Cuchillo59 said:
Forgive me if I am out of place here. First time on this forum . I am in the process of assembling a grinder and this is what I have on order. Reeder RPS101 2 X 72 Belt grinder, KBAC 27D VFD, and a Hallmark Industries 2HP, 3450 RPM, 3ph/60hz, 208-230/460VAC, 56C/TEFC, Inverter Duty AC motor. Any opinions on this setup, particularly the 3450 RPMs . Don Reeder from Reeder Products Inc told me that I should go with the higher rpms instead of the 1725 rpms. Any thoghts.
Click to expand...

I'd personally go with an 1800RPM and set the KBAC jumper to 2x speed for 3600RPM max speed.
 
It was my understanding that doubling the speed for long periods of time would be harmful to the motor. I am not positive on that but I have been reading so much lately that my head is spinning.
 
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