1960's Italian Angle Grinder Restoration, SuperStar mod ANS/B

Hi everyone today we are going to restore this Italian made 230mm 9" angle grinder.
A Super Star ASN/B , it doesn't have any production dates on it, not on the plate and not on the components.
This made difficult to give it an age, after researches and knowing that Super Star Professional was a Black & Decker company at some point in its history, we can say it might be from between 1959 and 1965.
That's because the modern angle grinder as we all know it today didn't exist until 1954 when Ackermann und Schmitt (nowadays Flex Elektrowerkzeuge)
invented it, supposing they deposited a patent, so other companies have had to wait till release their products.
And knowing by people I met here and there that B&D (and other companies too) started to make plastic body tools at the beginnings of 1970's
But most importantly being an Italian made powertool rated for 220V means it's very hard it could be produced before 1960's, because we got (yes I'm Italian 🇮🇹) 220V as standard mains voltage in 1965, we got 125V and 160-180V till there, 220V here was enough rare and most of the times it was 3phase.
Said that by looking at the construction we have a big trigger lever and not a smaller one or even a toggle switch, it's already a modern design compared to the competitors of the time.
Later production had a different manufacturer emblem design and they were petroleum blue.
Enjoy the video.

Chapters
00:00 removing the cutting wheel
00:27 removing the disc back flange
01:10 cutting the power cord for easier handling
01:19 removing the protective guard
01:45 removing the auxiliary handle
01:52 removing the carbon brushes
02:25 removing the spindle bearing dust cover
03:10 opening the gearbox
03:55 disassembling the spindle
04:40 spindle shaft and crown gear splined coupling detail
04:50 removing the spindle shaft
05:00 removing the spindle bearing
05:25 removing the old grease from the gearbox
05:50 disassembling the gearbox
07:00 removing the gearbox and rotor assembly
07:08 finishing to loosen the front rotor bearing retaining plate
07:15 removing the rotor/armature
07:30 disassembling the rotor transmission components
07:53 pinion and rotor splined detail
08:00 removing the pinion, the bearing and retainer
08:40 opening an removing the trigger handle
09:45 disconnecting the ground terminal
09:55 removing insulation liner off the handle
10:10 removing the switch cover
11:00 switch in detail
11:10 disconnecting the switch
11:35 removing the stator from the housing
12:28 removing the rear rotor bearing
12:45 finished to disassemble because unable to remove one brush holder without causing damages, they held the internal insulation liner in place
12:54 all the parts laying on the bench
12:58 scraping grease off parts
13:24 cleaning parts using gasoline, paint brush and a thootbrush.
OFF CAMERA repeat the process on all the other components but using degreaser instead
13:40 filing down scratches
14:10 using thread locker to seal the gearbox cap
14:40 painting parts
14:55 refreshing the switch contacts
15:17 repairing stator terminals
15:38 cleaning the rotor's commutator fins
15:46 removing burrs off the discs back flange
16:03 chasing handle threads M10x1.5
16:20 applying plastic restorer on the handle
16:35 blueing screws and smaller parts
16:44 installing the stator into the motor housing
17:00 locating insulation washer on the brush holder
17:15 assembling the rotor components
18:28 installing the spindle bearing
18:58 installing dust cover
19:15 fixing the loose fit between spindle shaft and bearing
19:38 assembling spindle components
20:38 pressing the rear armature bearings
21:10 installing the rotor assembly
21:20 tightening the rotor bearing retainer screws
21:35 installing the rotor and gearbox assembly
21:56 filling the gearbox with lithium grease
22:03 installing the spindle assembly
22:20 seating the rear rotor bearing cover
22:28 installing the switch
22:36 routing power cord and installing insulation components.
23:05 connecting the switch
23:28 connecting the ground terminal
23:37 installing the handle
23:54 tightening the power cord block/closing the handle
24:10 installing the auxiliary handle
24:14 installing the wheel guard
24:25 installing the carbon brushes
24:40 wheel flange and nut
24:49 before after comparison

Thank you so much for watching don't forget to comment, like and subscribe to not miss future projects.