Siemens & Innomotics SIMOTICS S AC Servo Motors
Brand: Siemens / Innomotics | Series: SIMOTICS S (1FL6, 1FK7, 1FK2, 1FT7 Servo Range)
Brand Lineage & Regional Production Advantage Notice:
As part of Siemens' motion control transmission lineup, SIMOTICS S Servo Motors are fully supported through our direct OEM factory channels.
Mainstream Chinese / Asian Production Models vs. Overseas Models:
• SIMOTICS S-1FL6 Series (China Production Mainstream): Purpose-built for high-volume industrial automation, paired with SINAMICS V90 drives. Covers Low Inertia (0.05 kW - 1.0 kW) and High Inertia (0.4 kW - 7.0 kW). Offers unbeatable cost performance and off-the-shelf availability.
• SIMOTICS S-1FK7 / 1FK2 Series (Asian & Global Standard): Compact, high-dynamic permanent magnet synchronous servo motors for SINAMICS S120 & S210 drives. Manufactured in both China and Europe.
• SIMOTICS S-1FT7 Series (European High-End Import): Ultra-high-precision servo motors engineered for premium CNC machine tool spindles and high-speed multi-axis motion.
• Direct Cross-Matching: Chinese-produced 1FL6 and 1FK7 models offer 1:1 functional and dimensional performance matches to replace expensive European imported models, significantly reducing machinery BOM costs.
As part of Siemens' motion control transmission lineup, SIMOTICS S Servo Motors are fully supported through our direct OEM factory channels.
Mainstream Chinese / Asian Production Models vs. Overseas Models:
• SIMOTICS S-1FL6 Series (China Production Mainstream): Purpose-built for high-volume industrial automation, paired with SINAMICS V90 drives. Covers Low Inertia (0.05 kW - 1.0 kW) and High Inertia (0.4 kW - 7.0 kW). Offers unbeatable cost performance and off-the-shelf availability.
• SIMOTICS S-1FK7 / 1FK2 Series (Asian & Global Standard): Compact, high-dynamic permanent magnet synchronous servo motors for SINAMICS S120 & S210 drives. Manufactured in both China and Europe.
• SIMOTICS S-1FT7 Series (European High-End Import): Ultra-high-precision servo motors engineered for premium CNC machine tool spindles and high-speed multi-axis motion.
• Direct Cross-Matching: Chinese-produced 1FL6 and 1FK7 models offer 1:1 functional and dimensional performance matches to replace expensive European imported models, significantly reducing machinery BOM costs.
The Siemens SIMOTICS S AC Servo Motor family sets the benchmark for speed control dynamics, positioning accuracy, and power density across modern motion control systems. Engineered with high-coercivity permanent magnets, IP65/IP67 protective housings, DRIVE-CLiQ digital encoder interfaces, and high-resolution absolute encoders (up to 21-bit / 20-bit), SIMOTICS S motors power electronic assembly, semiconductor handling, packaging machines, CNC machine tools, industrial robotics, and automated printing lines.
Technical Specifications
| Model / Part Number | 1FL6042-2AF21-1AA1 (0.75 kW, 3000 rpm, 2.39 Nm, High Inertia, Absolute Encoder) |
|---|---|
| Brand Lineage | Siemens → Innomotics Motion Control (100% Original OEM Supply) |
| Product Line Focus | Chinese Mainstream 1FL6 (V90) & Asian/Global 1FK7 / 1FK2 / 1FT7 |
| Rated Output Torque | 0.16 Nm to 70 Nm (Static / Continuous Stall Torque up to 140 Nm) |
| Rated Speed Range | 1,500 rpm / 2,000 rpm / 3,000 rpm / 4,500 rpm / 6,000 rpm |
| Feedback Encoders | TTL Incremental (2500 p/r) / Absolute Encoder (20-bit Single-turn & 21-bit Multi-turn) |
| Drive System Pairing | SINAMICS V90 (for 1FL6) / SINAMICS S120, S210, V70 (for 1FK7/1FK2/1FT7) |
| Protection Class | IP65 standard; optional shaft oil seal & IP67 water-jet resistant protection |
Documentation & Resources
SIMOTICS S Servo Motor Architecture Matrix
Complete structural layout guide for Siemens / Innomotics SIMOTICS S servo motors. Review target applications, drive pairings, and regional production highlights:
| Servo Series Designation | Production Origin & Market Position | Rated Power & Torque Range | Matched Servo Inverter Drive System |
|---|---|---|---|
| SIMOTICS S-1FL6 Low Inertia | China Mainstream High-Speed Light Duty | 0.05 kW - 1.0 kW (0.16 Nm - 3.18 Nm) | SINAMICS V90 200V / 400V |
| SIMOTICS S-1FL6 High Inertia | China Mainstream Heavy Load Conveying | 0.4 kW - 7.0 kW (1.27 Nm - 33.4 Nm) | SINAMICS V90 400V / 200V |
| SIMOTICS S-1FK7 Compact | Asian & Global Universal High Dynamic | 0.35 kW - 15 kW (0.85 Nm - 48 Nm) | SINAMICS S120 / S110 / V70 |
| SIMOTICS S-1FK2 Next-Gen | Global High-Speed Ultra-Compact | 0.1 kW - 15 kW (0.32 Nm - 50 Nm) | SINAMICS S210 / S120 Drives |
| SIMOTICS S-1FT7 Machine Tool | European Imported High-End CNC | 1.0 kW - 45 kW (2.0 Nm - 120 Nm) | SINAMICS S120 / SINUMERIK CNC |
Chinese Mainstream 1FL6 / 1FK7 vs. European Imported Servo Cross-Reference Guide
Chinese-manufactured 1FL6 and 1FK7 servo motors offer direct torque and speed matches to replace high-cost imported 1FT7 and older 1FK6 motors. Review the equivalent mapping below:
| Power & Rated Torque | Imported Overseas Model (1FT7 / 1FK6) | Chinese Mainstream Replacement (1FL6 / 1FK7) | Flange & Shaft Dimensions | Cost & Delivery Advantage Notes |
|---|---|---|---|---|
| 0.4 kW / 1.27 Nm (3000 rpm) | 1FK7032-2AK71 / 1FT7032 | 1FL6034-2AF21-1AA1 1FL6 Mainstream | 40mm Flange / 14mm Shaft | In-stock availability. Up to 50% cost reduction for packaging equipment. |
| 0.75 kW / 2.39 Nm (3000 rpm) | 1FK7042-2AC71 / 1FT7042 | 1FL6042-2AF21-1AA1 1FL6 Mainstream | 80mm Flange / 19mm Shaft | High inertia design avoids load vibration. 100% compatible with V90. |
| 1.0 kW / 3.18 Nm (3000 rpm) | 1FK7044-2AC71 / 1FT7044 | 1FL6044-2AF21-1AA1 1FL6 Mainstream | 80mm Flange / 19mm Shaft | Available with 21-bit multi-turn absolute encoder. Rapid delivery. |
| 1.5 kW / 4.78 Nm (2000 rpm) | 1FK7060-2AC71 / 1FT7062 | 1FL6062-1AC61-2AA1 / 1FK7060 1FK7 Option | 130mm Flange / 22mm Shaft | Heavy load pick-and-place robotics & indexing turntables. |
| 2.0 kW / 9.55 Nm (2000 rpm) | 1FK7063-2AC71 / 1FT7064 | 1FL6067-1AC61-2AA1 / 1FK7063 1FK7 Option | 130mm Flange / 22mm Shaft | Direct drop-in replacement for imported CNC feeding axes. |
| 3.5 kW - 7.0 kW (15 - 33 Nm) | 1FK7083 to 1FK7105 / 1FT7084 | 1FL6090 / 1FL6092 / 1FK7083 Heavy Duty | 180mm Flange / 35mm Shaft | High-torque machine tool & heavy conveyor positioning. |
Expert Selection & Servo Matching Engineering Notes
WE DRIVE HONGKONG LIMITED provides technical sourcing and motion control engineering support for the complete Siemens & Innomotics SIMOTICS S AC Servo Motor family. Whether your automated machine design specifies cost-effective China-produced servo motors paired with SINAMICS V90 (1FL6 Low Inertia / High Inertia), multi-axis high-dynamic servos for SINAMICS S120 / S210 (1FK7 / 1FK2), or imported high-precision CNC spindle/axis motors (1FT7), all motors can be ordered pre-configured with holding brakes, IP67 shaft oil seals, straight or right-angle rotatable power connectors, and DRIVE-CLiQ encoder feedback cables.
For machine builders seeking to reduce BOM costs without sacrificing motion precision or software compatibility, upgrading from imported European 1FT7/1FK7 motors to domestic Chinese-produced 1FL6 or 1FK7 series provides substantial cost advantages, eliminates long international supply chain delays, and ensures 100% seamless commissioning inside TIA Portal and V-ASSISTANT software. Send us your motor model code or load torque requirement, and our engineering team will provide a fully matched servo drive and motor package.
For machine builders seeking to reduce BOM costs without sacrificing motion precision or software compatibility, upgrading from imported European 1FT7/1FK7 motors to domestic Chinese-produced 1FL6 or 1FK7 series provides substantial cost advantages, eliminates long international supply chain delays, and ensures 100% seamless commissioning inside TIA Portal and V-ASSISTANT software. Send us your motor model code or load torque requirement, and our engineering team will provide a fully matched servo drive and motor package.
Core Benchmark Model Standard Configurations
- 1FL6022-2AF21-1AA1 (0.05 kW)
- 1FL6032-2AF21-1AA1 (0.2 kW)
- 1FL6034-2AF21-1AA1 (0.4 kW)
- 1FL6042-2AF21-1AA1 (0.75 kW)
- 1FL6044-2AF21-1AA1 (1.0 kW)
- 1FL6061-1AC61-2AA1 (1.0 kW 2000rpm)
- 1FL6062-1AC61-2AA1 (1.5 kW 2000rpm)
- 1FL6064-1AC61-2AA1 (1.75 kW)
- 1FL6067-1AC61-2AA1 (2.0 kW)
- 1FL6090-1AC61-2AA1 (3.5 kW)
- 1FL6092-1AC61-2AA1 (5.0 kW)
- 1FL6094-1AC61-2AA1 (7.0 kW)
- 1FK7032-2AK71 (0.4 kW 1FK7)
- 1FK7042-2AC71 (0.8 kW 1FK7)
- 1FK7060-2AC71 (1.5 kW 1FK7)
- 1FK7063-2AC71 (2.3 kW 1FK7)
- 1FK7083-2AC71 (4.5 kW 1FK7)
- 1FT7042-5AK71 (Imported CNC)
- 1FT7062-5AC71 (Imported CNC)
- 1FK2103-1AG00 (Next-Gen S210)
