Gear ring ER9 is manufactured according to drawing 220.127.116.11 and has the following characteristics:
-stainless steel 45HN GOST 4543-71,
-outer diameter – 751.20 mm,
-teeth amount – 73,
-weight – 110 kg.
“Haivoron Diesel Locomotive Repair Plant” PJSC produces gear rings of electric trains ER9, ER9P with high-quality stampings of alloy steels.
Gear rings are mounted on electric train ER9 during repair, as well as with the new formation of wheel pairs.
Gear ring ER2T is subjected to hardening of the involute-tooth profile by the HFC unit with the subsequent grinding.