What you're actually mating to the drive
The SH32051P02A1200 sits in the SH3 sizing reference SH32051P, an 8.07 in (205 mm) flange servo with a smooth 1.5 in (38 mm) shaft and 80 mm of usable shaft length — sized to the international standard flange pattern and centered on a 7.09 in (180 mm) collar with four 0.6 in (14 mm) mounting holes. Production is listed as current on the device short name SH3, so the line is in active manufacture and the BOM position is not at end-of-life risk.
Drive-side electrical face
Stator resistance is 0.3 Ohm with 2.97 mH of stator inductance, and continuous stall current is 21 A against a maximum Irms and 3-second peak output of 87.2 A — the peak is roughly 4× the continuous figure, which is the headroom the drive uses for accel / decel bursts before thermal foldback kicks in.
Encoder, environment, mechanical envelope
Sealing is split by section: IP65 on the motor body, IP65 on the shaft bushing, and IP67 on the housing to IEC 60034-5 — the housing rating is what lets the motor sit close to a washdown nozzle or a coolant splash zone, but the shaft bushing itself only carries IP65 so a direct high-pressure jet aimed at the shaft seal is still the worst case to design around. Cooling is natural convection with no integrated fan, and the thermal ceiling is set at a copper hot spot of 266 °F (130 °C) — derating starts where the cabinet ambient pushes the case above the natural-convection curve on the datasheet, not at the stall current number alone. Shaft load limits: 740 N maximum axial force Fa, and maximum radial force Fr of 3730 N at 1000 rpm falling to 2960 N at 2000 rpm and 2580 N at 3000 rpm — the higher the speed, the lower the side load the bearing will carry, so a belt drive that looks fine at 1500 rpm may be over the Fr line at 3600 rpm.