Photo Index - Sears | Dunlap - 115.5273

Machinery Photo Index

Manufactured/Badged by:
Sears | Dunlap
Chicago, IL

True Manufacturer:
Packard Electric Co. | Packard Electric Division - General Motors Corp., Warren, OH

Machine Specifications
Machine Class:	Metal Working Machinery
Machine Type:	Grinder, Bench
Machine Size:	6" x 3/4" x 1/2" - 1/4 hp
Submitted By:	Brian Kachadurian

Machine Specifications
Description/Model:	115.5273
Date of Manufacturer:	1941 June
Serial Number:	none
Last Updated	8/30/2022 2:02:14 PM

Comments:

>>MACHINE<<
Sears Dunlap 6" ball bearing electric grinder.
Cast iron construction.
5/8" steel rotor shaft with 1/2"-24 threaded ends.
New Departure (USA) 8502 ball bearings.
Motor type SSO, 110VAC, 3.8A, 3450 rpm
Date code: F_4_1

>>HISTORY<<
September 2016:
Received from a fellow OWWMer.
A previous owner hacked the base to install a light switch in place of the original toggle.
Original tool rests, eye shields, and some wheel flanges missing.
End bells, base, guards are cast iron painted black.

April 2017:
Repaired shaft threads.
Installed new IKS (Japan) 87502 bearings (seal-inner side, shield-outer side).
Swapped base 5206887, with a 1952 115.7396 parts grinder, drill/tap interior for #8-32 ground screw.
Part numbers: LH guard-5206881, RH guard-5206880, inner die-cast flange-52017718
Installed new single pole toggle switch, 18-3 SJOOW power cord and plug.
Added fabricated steel tool rests, 3/16" thick arms, 1/4" thick rests.

August 2022:
Installed period correct grinding wheels: A46 grade O, A70 grade O

Photo 1:

Comments: Front left
Source: iPhone 12 Pro camera-existing light

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Photo 2:

Comments: Rear
Source: iPhone 12 Pro camera-existing light

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Photo 3:

Comments: Tag
Source: iPhone 12 Pro camera-existing light

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Photo 4:

Comments: Base from a 1952 grinder. In Post-WWII they were painted Sears Medium Gray. Note: 2-motor leads connect to neutral and 2-motor leads connect to power switch.
Source: iPhone 12 Pro camera-existing light

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