MAINTENANCE FOR CLUTCH
• Most clutch parts do not require maintenance and can not be replaced.
• Bearings are sealed for life of clutch.
• Armature, rotor, and brake wear evenly and cannot be replaced individually.
• Coil cannot be removed.
ADJUSTMENT FOR WEAR
• All Ogura one-piece clutches are adjusted at factory. (no initial adjustment required)
• As adjustable clutches wear, they can be re-gapped to extend overall life.
• If clutch fails to pull in or will not continue to pull in when hot, air gap may need adjust-
ment.
• To make adjustments, you will need:
0.015” - 0.022” feeler gauge
9/16” open-end wrench
Factory setting is 0.016
• Identify clutch model from label located on back of field.
• There are three inspection slots on brake shroud.
• Place feeler gauge in slot between armature and rotor.
• Slowly tighten brake nut until armature and rotor contact feeler gauge.
• Almost all Ogura clutches use 24UNF
brake bolt, thus one turn of brake nut equates to approximately 0.04” of axial movement.
(for reference only: feeler gauge is still required)
• Setting gap towards low range will increase cycle life between adjustments.
• Caution: do not set gap below minimum or clutch may be damaged
• Once gap is set, rotate armature and rotor, check gap with feeler gauge, and make
adjustments as required.
• Apply full voltage to clutch
• Rotate armature and rotor to verify no
contact between armature and brake shroud
• If there is contact, back off brake nuts and retry until there is no contact
