Imao’s sprockets are available from a wide variety of materials and sizes.
NIS-S: Steel Idle Sprockets
・ Ultra heavy-duty
・ Flanged body
・ Moulded-in needle roller bearing for durable and stable rotation
・ Steel body with induction hardened teeth top for high wear resistance
・ Applicable to chain No. 25, 35, 40, 50, 60, 80
・ For 12mm, 25mm diameter spindle
Use with SID Idler Pins.
Materials:
Sprocket body: S45C Steel, Induction hardened teeth top, Black oxide finish
Bearing: Steel
Datasheet: https://www.imao.co.jp/files/on-cat/pdf/en/nis-s-e.pdf