Angle Grinder; Is Diamond Turbo Cup Wheel attached correctly?

Reply

  #1  
Old 02-22-14, 08:27 PM
C
Member
Thread Starter
Join Date: Feb 2013
Location: USA
Posts: 427
Received 0 Votes on 0 Posts
Angle Grinder; Is Diamond Turbo Cup Wheel attached correctly?

I got this Black & Decker 4 1/2" angle grinder model# 4247 type 100 with the B&D grinder wheel on it attached as follows: (Backing Flange, Grinder Wheel, 5/8 Clamp Nut) & it sits nicely within the confines of the guard.



I tried to put the threaded (5/8-11) Diamond Turbo Cup Wheel on the same way (Backing Flange, Cup Wheel, 5/8 Clamp Nut) but it doesn't seem to fit properly with the Backing Flange so I did not use that, there's also not enough spindle to screw the 5/8 Clamp Nut to & it sits totally outside the guard.

Does it look like this attached correctly??
 
  #2  
Old 02-23-14, 05:03 AM
M
Forum Topic Moderator
Join Date: Mar 2005
Location: USA - N.E.Tn
Posts: 47,827
Received 361 Votes on 318 Posts
I couldn't tell from your bottom pic but the threaded cup doesn't use the spacer/washer or the nut, it just screws on. I think you have it on correctly.
 
  #3  
Old 02-23-14, 01:32 PM
C
Member
Thread Starter
Join Date: Feb 2013
Location: USA
Posts: 427
Received 0 Votes on 0 Posts
Great, thanks!
That's what I did…Just screwed it on with no spacer/washer or the nut.
 
  #4  
Old 02-23-14, 01:40 PM
Gunguy45's Avatar
Super Moderator
Join Date: Dec 2007
Location: USA
Posts: 21,113
Received 3 Votes on 3 Posts
Agree...wire brushes and such don't normally use any spacer or nut. It's built into the attachment.
 
  #5  
Old 02-23-14, 02:36 PM
XSleeper's Avatar
Group Moderator
Join Date: Dec 2004
Location: USA
Posts: 26,553
Received 785 Votes on 723 Posts
I agree. But that's the dumbest design for a nut I've ever seen. Why it protrudes past the grinder wheel is a really odd way to make a grinder. Most have a flat washer / spanner wrench.
 
  #6  
Old 02-26-14, 10:49 AM
C
Member
Thread Starter
Join Date: Feb 2013
Location: USA
Posts: 427
Received 0 Votes on 0 Posts
Originally Posted by XSleeper
I agree. But that's the dumbest design for a nut I've ever seen. Why it protrudes past the grinder wheel is a really odd way to make a grinder. Most have a flat washer / spanner wrench.
Hmmm...Actually truth be told here's a pic of the original nut with notches that I found it with. I didn't have the spanner wrench, couldn't get the nut off and couldn't find anything at the big box stores that would fit. I called B&D and they sent me the following link and gave me "Box Wrench" part # 149645.

Black and Decker 4247 Parts List and Diagram

You'll see a nice diagram of the "Box Wrench" (23) with the notches to fit the original nut but when you scroll down and click the link for the "Box Wrench", it takes you to what appears to be a different wrench without the notches.

The B&D rep found me a local distributor in the area (30 minute drive), who she said had the notched one in stock. Foolish me, I called to confirm in stock but didn't confirm notches.

When I got there with grinder in hand, the guy I spoke to went into the back and came out the notch-less wrench and a new nut (2nd pic). He told me B&D switched it at some point and he'd give me the new nut for free. I've also attached a 3rd pic comparing the original (notched), which doesn't stick out as much as new (notch-less).
 
Attached Images    
  #7  
Old 02-26-14, 12:47 PM
ray2047's Avatar
Member
Join Date: Mar 2006
Location: USA
Posts: 33,583
Received 13 Votes on 11 Posts
I have made spanner wenches with flat bar and a couple of pins driven or pressed in. Pins can be made from drill rod or shanks of dill bits. Tricky part is a tight enough hole you have to drive the pin in but not so tight you can't drive it in. Slight grinding of the pin where it goes in and/or freezing the pin and heating the bar may help.
 
  #8  
Old 02-26-14, 04:19 PM
XSleeper's Avatar
Group Moderator
Join Date: Dec 2004
Location: USA
Posts: 26,553
Received 785 Votes on 723 Posts
They sell adjustable spanner wrenches... and i have even made due with buying a diffetent brand of spanner wrench because all you need is one half of the wrench in one hole
.. the other half can be outside the nut.
 
  #9  
Old 02-26-14, 08:01 PM
C
Member
Thread Starter
Join Date: Feb 2013
Location: USA
Posts: 427
Received 0 Votes on 0 Posts
Thanks!
Bottom line...How serious of an issue is this?
 
  #10  
Old 02-26-14, 08:15 PM
XSleeper's Avatar
Group Moderator
Join Date: Dec 2004
Location: USA
Posts: 26,553
Received 785 Votes on 723 Posts
For me, it would just be more of an annoyance than anything. Anytime you wanted to grind (or sand) with up to half of the disk, (the guard prevents using the back half of any disk) the nut would contact the work piece. Normally, the nut is completely recessed in the disk. If you are only grinding with the front 1/4 of the disk, with just the edges or the corners of your disk, it's not an issue at all.
 
  #11  
Old 02-27-14, 12:39 AM
Gunguy45's Avatar
Super Moderator
Join Date: Dec 2007
Location: USA
Posts: 21,113
Received 3 Votes on 3 Posts
When I had to...I used a crescent wrench and a pair of needle nose pliers. Put the needle nose in the holes, then use the wrench on the pliers to turn the nut off.
 
  #12  
Old 02-28-14, 11:57 AM
C
Member
Thread Starter
Join Date: Feb 2013
Location: USA
Posts: 427
Received 0 Votes on 0 Posts
Funny how things work out...The old 4 1/2" B&D with (5/8-11) Diamond Turbo Cup Wheel wasn't up to the intended job of concrete coating removal. Poor thing tried but just got tooo hot. Figuring I need a bigger grinder for this job only, I went to harbor freight and picked up the following:

1) "7 in. Heavy Duty Angle Grinder" Item # 69454
Reg price: $54.99
On Sale: $44.99
-25% off coupon = $33.74

2) "7 in. Diamond Turbo Cup Wheel" Item #66353
Reg price: $49.99
-25% off coupon = $37.50

TOTAL $71.23 + tax
(PLUS I got one each of 3 free cheapies...25x1 Tape measure, 6 pc screw driver set & 27 led portable work/flash light).

ANYWAY...So far so good...Just about halfway thru the job and (knock on wood) this HF combo is doing a great job. BTW, The kicker here is...The HF 7" grinder came with a notched spanner wrench...and guess what it fits??

That's right...The 4 1/2" B&D's original nut.
Go figure. LOL
 

Last edited by c1351996; 02-28-14 at 12:38 PM.
  #13  
Old 02-28-14, 01:01 PM
C
Member
Thread Starter
Join Date: Feb 2013
Location: USA
Posts: 427
Received 0 Votes on 0 Posts
BTW, Regarding the 4 1/2 grinder...Other than the threaded (5/8-11) Diamond Turbo Cup Wheel & the original B&D Ferrous Metal wheel (pic'd together earlier), I have 5 of these from Walter. What exactly are the D&D and Walter used for and what other wheels might you recommended to have in my arsenal?

FWIW, I have the following diy jobs:
interior, exterior house paint
auto body rust & paint touch up
installing engineered wood & porcelain tile floor
installing, patching drywall ceilings & walls
 
Attached Images  

Last edited by c1351996; 02-28-14 at 01:48 PM.
 

Thread Tools
Search this Thread
 
Ask a Question
Question Title:
Description: