What it is on the line
The Omron R88MK1K520FBS2 is a G5-series brushless servo motor delivering 7.16 Nm of continuous torque at 2000 min-1 output speed, with a 4.7 A rated winding current. It runs off a DC bus from 323 V to 528 V, so it pairs with the matching G5 servo drive on a 230 V or 400 V class supply — the bus envelope matters more than the line voltage when sizing the amplifier.
Form factor for cabinet fit
The motor body is 130 mm square (length 130 mm, height 130 mm) by 219 mm wide, with the G5-series mounting footprint — confirm the flange and shaft detail match the machine's existing motor slide before committing, since the listed outline is the overall envelope, not the bolt pattern.
Sourcing reality for a discontinued motor
For a shop running a G5 axis that drops a motor, the BOM line is best treated as last-time-buy or surplus-channel — buy against confirmed quantity, not against an open-ended forecast, and cross-check the nameplate against the original PO trace on receipt.