Motor class, ratings, and what they actually let the loop do
The 1FL2104-4AG11-1SC0: It delivers 1 kW of rated power at 3000 rpm with a continuous stall torque of 3.2 Nm that matches the rated torque — meaning the motor can hold position at zero speed without folding into a thermal derate, which is exactly what a feed-axis or rotary table needs when it dwells on a tool change. The 40 mm shaft height with an oil seal on the front face and IP65 sealing makes the unit viable around cutting fluid and coolant splash that would kill a standard servo, so the usual CNC retrofit question of whether a guard or boot is required is answered by the rating itself.
Feedback, brake, and connector choices
Feedback is a 21-bit absolute encoder in the AS21 single-turn variant — high enough resolution that following error stays inside a few microns on a ballscrew-driven axis and that the SINAMICS S200 autotuner converges without manual gain trimming. A holding brake is fitted as standard, which lets the axis hold its position with the drive powered down, and the shaft key with tolerance N gives the coupling the positive rotational reference that backlash-free mounts require. The hybrid connector carries both power and signal in one plug, cutting the gland-plate count on the cabinet wall and removing one of the usual failure points where a mis-routed signal lead picks up noise from a nearby power run.
Compliance posture and what changes at the dock
Compliance with the substance restrictions per the RoHS directive has been in force since 01-01-18, and the REACH Art. 33 duty to inform applies — meaning the candidate-list declaration is supplied with the shipment, which matters for any EU-bound build that crosses customs in 2026. Export control is the clean line — AL: N and ECCN: N — so the motor ships without an export licence gate, simplifying cross-border sourcing for European tool shops that already run S200 cabinets. The product is classified as class C — manufactured to order and not returnable against credit — so the BOM position must be frozen before the order is raised; a cancelled build cannot be re-used or refunded.
Cataloguing codes and pack-out
It ships as one piece per pack in a 382 x 222 x 240 mm carton — the kind of outer that fits through a typical CNC service hatch without removing the door frame, and that is worth knowing when sizing a replacement spare's shelf slot.
Lifecycle read and how to source it
The lifecycle stage reads as current and the Siemens product status is listed as Active, so this is not a phase-out hunt — but the product class C designation means the unit is built per order rather than held in finished-goods stock, which is the central fact for any lead-time planning.