What the SH20 frame actually delivers
The 1FL2102-2AF00-0MC0 is a SIMOTICS S-1FL2 low-inertia servomotor in the 20 mm shaft-height frame, built to run on a 400 V 3AC supply and pair with the SINAMICS S200 drive line. Rated output is 50 W at a rated speed of 3000 rpm, with the 0.16 Nm continuous torque equal to the stall torque — a hallmark of a short-stack, low-inertia machine intended for high-accel point-to-point moves rather than sustained torque at low speed. This code is the no-holding-brake, no-oil-seal variant with a plain shaft and an AM21bit hybrid connector, so the loop closes at single-turn resolution out of the box and the feedback cable terminates through a single compact plug rather than separate resolver and power leads. For the integrator selecting the axis, the headline read is straightforward: match the inertia first, because 0.16 Nm at 3000 rpm is a small rotor and the load ratio decides whether the velocity loop stays clean or starts to ring. With an AM21bit feedback device the position loop has the resolution to hold sub-arc-minute following error at the shaft, so the bottleneck will be mechanical — coupling stiffness and belt compliance — long before the encoder runs out of bits.
Mechanical and sealing configuration
The plain shaft (tolerance N) drops straight into a coupling or pulley without a keyway cut; if the application needs keyed retention, the shaft will need a custom modification or a keyed coupling sleeve. The protection class is IP54 with no oil seal specified, which keeps the body sealed against splashing water and dust ingress but does not suit a gearbox-side environment where oil mist or cutting fluid is present — for that duty a sealed variant or a separate shaft seal would be required. The AM21bit hybrid connector consolidates power and feedback into one mating interface, which simplifies cabinet routing on the S200 system but means the cable set must be the matched AM-series; substituting a separate resolver cable is not an option on this connectorization.
Compliance and ordering posture
This is a product-class-C item — manufactured to order, not returnable for credit — so a cancelled line cannot be restocked as new, which matters when sizing spare-quantity buys against a panel build. Lifecycle status is active under the listed group code R220 / product group X0DJ, and the part is ordered as one piece per packaging unit. For a BOM line, that means each axis is a single order code with no sub-component kitting — the drive, cable, and gearbox are specified separately.
Sourcing through this channel
As an active, made-to-order servo in the SIMOTICS S-1FL2 family, the part is quoted against the RFQ rather than pulled from shelf stock; pricing and lead time are confirmed when the BOM line is submitted. Independent distribution sources the motor as a traceable OEM unit, and for panel builders running multi-axis S200 cabinets the constraint to plan around is the Siemens production window, not channel availability.