Motor ratings and what they mean for fit
The Omron R88MK5K030FS2 is a G5-series servo motor delivering 15.9 Nm of rated torque at 3000 min⁻¹ output speed, drawing 12 A under load. That torque figure positions it for medium-duty indexing, positioning, and constant-torque applications through a gearbox or direct-coupled to a ballscrew — think pick-and-place gantries, rotary tables, or conveyor segments that need holding torque at standstill. The 3000 min⁻¹ base speed is the standard for most AC servo applications; if your move profile demands higher rpm, you'd be looking at a different frame. The 12 A rated current is the continuous thermal limit at the motor's nameplate — the drive must be sized to supply that plus peak current during acceleration, typically 2-3x for short durations. Operating voltage range is 323-528 VAC, covering 400 VAC three-phase supplies common in European and Asian industrial plants, and stepping up to 480 VAC for North American installations. That's a wide enough window to handle nominal line variations without a buck-boost transformer.
Frame dimensions and integration
The motor measures 243 mm in width, 130 mm in height, and 130 mm in length — a compact square-frame body that fits standard NEMA or metric servo-mount patterns. The 243 mm width is the overall envelope including the connector housing; the 130 mm square body is what registers against the mounting face. Verify the pilot diameter and bolt pattern against your existing bracket or gearbox input flange before committing — G5 series typically uses a 80 mm or 100 mm square pilot, but the exact interface is defined by the motor's frame suffix, not the order code alone.