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Machinery Photo Index
Manufactured/Badged by:
Van Dorn Electric Tool Co.
Cleveland, OH; Towson, MD

Machine Specifications
Machine Class: Metal Working Machinery
Machine Type: Grinder, Bench
Machine Size: 6" x 5/8" x 1/2"
Submitted By: Brian Kachadurian
Machine Specifications
Description/Model: Model 6" 'Standard' Bench Grinder Type A
Date of Manufacturer: est. 1950s/60s
Serial Number: 711800
Last Updated 9/20/2016 11:22:17 AM

Van Dorn (Division of Black & Decker) 6" 'Standard' bench grinder Type A.
S/N 711800
1/4hp, 4A, 110V, 50/60cy, 3000/3600rpm

Parts schematic: http://www.owwm.com/MfgIndex/PubDetail.asp?ID=101&PubID=2241

I purchased this grinder on eBay, in 2006.
It came with several wire wheels and a separate vintage CH push button motor control switch.
I believe this grinder was used in a lab and hard wired to the remotely located CH switch.
I've installed a new power cord and plug. I've also installed the optional carrying handle, from the same model Black & Decker grinder that I used to own.
I'm going to use the switch on a different large motor machine (TBD at this time).
This grinder runs nicely and is fairly compact (it is no lightweight by today's standards).
I'll probably use it as a 'job-site' machine.

The inner flanges are aluminum drums, pressed on the shafts. I noticed that they were not concentric and were probably contributing to the vibration of the base grinder (without wheels). I used a round nose wood lathe scraper (see photo below) angled slightly downward on the grinder's tool rests to turn the outside of the flanges. I turned slightly over 1/32" from the diameters of the flanges. Now the vibration of the base grinder is almost non-existent.

Photo 1:

Comments: Added power cord and carrying handle.
Source: Canon S230 with flash
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Photo 2:

Comments: Machining the inner flanges concentric.
Source: Sony Coolpix with flash in my basement workshop.
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