LIGO Document D1500163-v3

Annular End Reaction Mass (AERM)

Document #:
LIGO-D1500163-v3
Document type:
D - Drawings
Other Versions:
LIGO-D1500163-v4
15 Oct 2015, 13:43
LIGO-D1500163-v2
19 Aug 2015, 13:15
Abstract:
Redesigned End Reaction Mass (ERM) with Dia. 200 mm hole in center
Files in Document:
Notes and Changes:
Revised as follows:

NOTE NO. 3 WAS:
INSPECTION POLISH ALL FACES, EDGES AND CHAMFER.
SURFACES SHALL APPEAR TRANSPARENT WITH NO GREY, SCUFFS OR
SCRATCHES VISIBLE TO THE NAKED EYE WHEN VIEWED IN NORMAL
ROOM LIGHT AGAINST A BLACK BLACKGROUND.

NOTE NO. 4 WAS:
ETCH, GRIND OR SANDBLAST THE SERIAL NUMBER "ERM X", APPROX.
WHERE SHOWN, LETTERING APPROX. 4mm HIGH, WHERE "XX" IS
INCREMENTAL STARTING WITH "11".

ADDED NEW NOTES NO. 6-8

F/D:

ZONE D/4: Change chamfer tolerance, WAS 2.0 0.2 x 39deg 5. Also changed (39deg) call-out to ( 41 deg).

Zone F/5: Center void diameter WAS: 200 DIA. IS: 222.5 0.25 mm with similar Cyl. & Perp. as OD (340mm)

Referenced by:
Associated with Events:
held on 18 Sep 2015

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