SIMOTICS

Siemens SIMOTICS is the motor product family within Siemens' industrial portfolio, covering synchronous servo motors and permanent magnet motors for motion control and servo drive applications. The SIMOTICS collection at PLC Direct focuses on the SIMOTICS S servo motor series, including the 1FK7, 1FT7, and 1FL6 motor families, which are used in combination with SINAMICS drive systems for precision axis control in machine tool, robotics, and production machinery applications. With 1,828 products in this collection, SIMOTICS represents a significant inventory depth for servo motor replacements.

PLC Direct supplies Siemens SIMOTICS servo motors to maintenance teams managing existing drive and motion control installations. Our collection covers SIMOTICS S synchronous servo motors across multiple frame sizes, torque ratings, and encoder configurations, including motors compatible with SINAMICS V70, V90, and S120 drive systems.

Where Siemens SIMOTICS Are Used

A failed servo motor on a production machine axis takes that machine or cell out of service until a motor with matching torque, speed, encoder, and mechanical specifications is available. In multi-axis systems, a single motor failure can cause an entire machining center or robot cell to idle. For SIMOTICS motors paired with SINAMICS drives, the motor and drive are matched as a system, and substituting an incompatible motor can create drive fault conditions that prevent commissioning.

Facilities that depend on Siemens SIMOTICS motors include:

• CNC machining centers requiring SIMOTICS S servo motor replacements for axis and spindle drives paired with SINAMICS drive systems

• Robotic workcells and automated assembly equipment running SIMOTICS S motors for precision positioning and velocity control

• Packaging and printing machinery using SIMOTICS S motors for high-dynamic servo axis control

• Plastics injection molding machines with servo-driven clamping and injection axes using SIMOTICS motors

• Metal forming and press applications requiring controlled torque from SIMOTICS S motors on forming and feed axes

• Facilities running SINAMICS V90 or S120 drive systems, where motor replacement requires a DRIVE-CLiQ or incremental encoder-compatible SIMOTICS S motor

When a SIMOTICS servo motor fails and needs to be replaced to restore machine operation, having access to verified hardware outside standard OEM channels reduces the repair cycle time.

Siemens SIMOTICS Products

The SIMOTICS collection covers SIMOTICS S synchronous servo motor families across multiple frame sizes and encoder types. All product families and model references below are confirmed on the live PLC Direct collection page.

Product Families

• SIMOTICS S-1FL6 Servo Motors: Compact synchronous servo motors for use with SINAMICS V70 and V90 drive systems. Confirmed in collection: 1FL6044-1AF61-0LB1, operating voltage 400 V 3 AC, rated power 0.75 kW, rated speed 3000 rpm, M0 = 3.5 Nm, MN = 2.39 Nm, shaft height 45 mm, absolute encoder 20-bit (12-bit multi-turn), with feather key and holding brake, IP65 with sealing ring.

• SIMOTICS S-1FK7 Compact Synchronous Servo Motors: Naturally cooled synchronous servo motors in the 1FK7 Compact series for general motion control applications. Confirmed in collection: 1FK7083-5AF71-1AG0, 16 Nm (M0, 100K), 3000 rpm, 3.30 kW, IM B5 (IM V1, IM V3) mounting, incremental encoder SIN/COS 1 Vpp 2048 P/Rev, plain shaft (tolerance N), no holding brake, IP64.

• SIMOTICS S-1FT7 Synchronous Servo Motors: Higher-torque synchronous servo motors for SINAMICS S120 drive systems with DRIVE-CLiQ interface. Confirmed in collection: 1FT7086-1AF71-1CH1, M0 = 28 Nm (100K), rated speed 3000 rpm, rated power 5.65 kW, naturally cooled, IP65, IM B5 (IM V1, IM V3), absolute encoder 24-bit + 12-bit multi-turn with DRIVE-CLiQ interface (encoder AM24DQI), plain shaft with holding brake, accuracy tolerance N.

Available at PLC Direct

• SIMOTICS S-1FL6, 0.75 kW, 3000 rpm, 3.5 Nm, absolute encoder 20-bit/12-bit multi-turn, IP65, with holding brake, SINAMICS V70/V90 compatible (1FL6044-1AF61-0LB1)

• SIMOTICS S-1FK7 Compact, 16 Nm, 3000 rpm, 3.30 kW, SIN/COS 1 Vpp encoder, IM B5, IP64, no holding brake (1FK7083-5AF71-1AG0)

• SIMOTICS S-1FT7, 28 Nm, 3000 rpm, 5.65 kW, absolute encoder DRIVE-CLiQ AM24DQI, IP65, IM B5, with holding brake (1FT7086-1AF71-1CH1)

What to Know Before You Buy Siemens SIMOTICS Motors

Ordering the correct SIMOTICS servo motor replacement requires matching four variables: the motor series, torque and power ratings, encoder type, and mechanical configuration. A motor with the wrong encoder interface cannot be used as a direct drive replacement without reconfiguring the drive system.

Hardware condition options: PLC Direct supplies SIMOTICS motors as surplus sealed, refurbished, and used. Surplus sealed units are factory-sealed stock; refurbished units have been tested and restored to operational condition.

Drive compatibility: SIMOTICS S-1FL6 motors are designed for use with SINAMICS V70 and V90 drives. SIMOTICS S-1FT7 motors with DRIVE-CLiQ encoder interfaces are designed for SINAMICS S120 systems. SIMOTICS S-1FK7 motors with SIN/COS 1 Vpp encoders are compatible with SIMODRIVE 611 and certain SINAMICS configurations. Match the encoder interface type to the installed drive system before ordering.

Encoder type: SIMOTICS motors in this collection use one of three encoder types: SIN/COS 1 Vpp incremental (1FK7), absolute encoder with multi-turn capability (1FL6), or absolute encoder with DRIVE-CLiQ interface (1FT7). The encoder type is identified in the part number suffix and must match the encoder interface on the drive's motor module.

Holding brake: The 1FL6 and 1FT7 motors in this collection include integrated holding brakes; the 1FK7 Compact motor confirmed in this collection does not. Confirm whether the replaced motor in the application had a holding brake before ordering, as this affects how the axis is parked and held when the drive is de-energized.

Mounting configuration: All motors in this collection use IM B5 (flange mount, IM V1, IM V3) mounting. Verify that the machine's mounting configuration matches the flange specification before ordering.

Warranty: All Siemens SIMOTICS hardware purchased from PLC Direct includes a standard 1-year warranty covering defects and functionality, applicable to surplus sealed, refurbished, and used products.