Siemens SIMOTICS S-1FK2 High-Dynamic Synchronous Servo Motors
Brand: Siemens Motion Control | Series: SIMOTICS S-1FK2 (High Dynamic 1FK21 & Compact 1FK22)
Next-Generation Motion Architecture — Siemens Digital Industries:
The SIMOTICS S-1FK2 series represents Siemens' newest, high-performance synchronous servo motor platform designed in conjunction with the SINAMICS S210 single-axis servo drive system. While standard low-voltage induction motors transitioned to Innomotics, Siemens strictly retains, engineers, and advances this cutting-edge motion control technology.
Engineering Advantages & Single-Cable Innovation:
• One Cable Connection (OCC) Technology: Power conductor lines, brake controls, and digital encoder signals are consolidated into an ultra-slim, single SPEED-CONNECT M12/M17 cable, drastically reducing installation space, weight, and cabinet cabling complexity.
• Dual Dynamic Variants: 1FK21 (High Dynamic) delivers minimal rotor inertia for maximum acceleration and rapid cycle rates; 1FK22 (Compact) provides high torque density and higher rotor inertia for optimal matching with heavier mechanical loads.
• 22-bit / 24-bit Digital Absolute Encoders: Fast, noise-immune digital telemetry without external battery backup, ensuring zero-homing cycles upon restart and extreme positioning accuracy.
The SIMOTICS S-1FK2 series represents Siemens' newest, high-performance synchronous servo motor platform designed in conjunction with the SINAMICS S210 single-axis servo drive system. While standard low-voltage induction motors transitioned to Innomotics, Siemens strictly retains, engineers, and advances this cutting-edge motion control technology.
Engineering Advantages & Single-Cable Innovation:
• One Cable Connection (OCC) Technology: Power conductor lines, brake controls, and digital encoder signals are consolidated into an ultra-slim, single SPEED-CONNECT M12/M17 cable, drastically reducing installation space, weight, and cabinet cabling complexity.
• Dual Dynamic Variants: 1FK21 (High Dynamic) delivers minimal rotor inertia for maximum acceleration and rapid cycle rates; 1FK22 (Compact) provides high torque density and higher rotor inertia for optimal matching with heavier mechanical loads.
• 22-bit / 24-bit Digital Absolute Encoders: Fast, noise-immune digital telemetry without external battery backup, ensuring zero-homing cycles upon restart and extreme positioning accuracy.
The Siemens SIMOTICS S-1FK2 Servo Motor System provides extraordinary dynamic acceleration, thermal stability, and smooth rotation across industrial automation axes. Available in shaft heights (SH) 20, 30, 40, 48, 52, 63, 80, and 100, offering static stall torques from 0.05 Nm to 50 Nm and rated speeds up to 8,000 rpm, 1FK2 motors feature natural cooling, forced ventilation, or protective shaft oil seals. Standard configurations include optional low-backlash 24V holding brakes, planetary gearbox couplings, and IP64/IP65/IP67 ratings. They are heavily utilized in pick-and-place delta robots, automated packaging, blister cartoning, electronics assembly, printing, and multi-axis CNC machines.
Technical Specifications
| Model / Part Number | 1FK2205-2AC00-1SA0 (Stall Torque 3.6 Nm, Rated Speed 2000 rpm, Shaft Height 52, Compact Type) |
|---|---|
| Brand Lineage | Siemens Digital Industries (100% Authentic Siemens Motion Control Supply) |
| Motor Technology | Permanent-Magnet Synchronous AC Servomotor (High-Energy Neodymium Magnets) |
| Design Variants | SIMOTICS S-1FK21 (High Dynamic / Low Inertia) & S-1FK22 (Compact / High Torque Density) |
| Static Stall Torque ($M_0$) | 0.05 Nm to 50.0 Nm (Covering micro-mechanisms to heavy automation axes) |
| Rated Operating Speeds | 1500 rpm, 2000 rpm, 3000 rpm, 4500 rpm, 6000 rpm, 8000 rpm |
| Connection Technology | One Cable Connection (OCC) with M12 / M17 SPEED-CONNECT Quick-Release Plugs |
| Encoder System | 22-bit Single-turn Absolute / 22-bit + 12-bit Multi-turn Absolute (Without Battery Backup) |
Siemens SIMOTICS S-1FK2 Selection Directory (SINAMICS S210 Matched)
Procurement selection directory for Siemens SIMOTICS S-1FK2 Servo Motors. Review standardized parameters across 1FK21 (High Dynamic) and 1FK22 (Compact) models. Identify exact shaft heights (SH), static stall torques ($M_0$), rated output power (kW), rated speeds ($n_N$), and official Siemens MLFB part numbers:
| Brand | Dynamic Variant | Shaft Height | Stall Torque ($M_0$) | Rated Power | Rated Speed | Order Number / MLFB Code |
|---|---|---|---|---|---|---|
| Siemens | 1FK21 High Dynamic | SH 20 | 0.16 Nm | 0.05 kW | 6000 rpm | 1FK2102-0AG00-□□□0 |
| Siemens | 1FK21 High Dynamic | SH 20 | 0.32 Nm | 0.10 kW | 6000 rpm | 1FK2102-1AG00-□□□0 |
| Siemens | 1FK21 High Dynamic | SH 30 | 0.64 Nm | 0.20 kW | 6000 rpm | 1FK2103-2AG00-□□□0 |
| Siemens | 1FK21 High Dynamic | SH 30 | 1.27 Nm | 0.40 kW | 6000 rpm | 1FK2103-4AG00-□□□0 |
| Siemens | 1FK21 High Dynamic | SH 40 | 2.40 Nm | 0.75 kW | 3000 rpm | 1FK2104-4AF00-□□□0 |
| Siemens | 1FK21 High Dynamic | SH 40 | 3.20 Nm | 1.00 kW | 3000 rpm | 1FK2104-5AF00-□□□0 |
| Siemens | 1FK21 High Dynamic | SH 40 | 3.20 Nm | 1.50 kW | 6000 rpm | 1FK2104-6AK00-□□□0 |
| Siemens | 1FK21 High Dynamic | SH 52 | 6.00 Nm | 1.90 kW | 3000 rpm | 1FK2105-4AF00-□□□0 |
| Siemens | 1FK21 High Dynamic | SH 63 | 9.00 Nm | 2.80 kW | 3000 rpm | 1FK2106-3AF00-□□□0 |
| Siemens | 1FK21 High Dynamic | SH 63 | 12.0 Nm | 3.80 kW | 3000 rpm | 1FK2106-4AF00-□□□0 |
| Siemens | 1FK22 Compact | SH 40 | 1.27 Nm | 0.40 kW | 3000 rpm | 1FK2204-5AF00-□□□0 |
| Siemens | 1FK22 Compact | SH 40 | 2.40 Nm | 0.75 kW | 3000 rpm | 1FK2204-6AF00-□□□0 |
| Siemens | 1FK22 Compact | SH 48 | 3.60 Nm | 1.10 kW | 3000 rpm | 1FK2205-2AF00-□□□0 |
| Siemens | 1FK22 Compact | SH 52 | 3.60 Nm | 0.75 kW | 2000 rpm | 1FK2205-2AC00-□□□0 |
| Siemens | 1FK22 Compact | SH 52 | 6.00 Nm | 1.88 kW | 3000 rpm | 1FK2205-4AF00-□□□0 |
| Siemens | 1FK22 Compact | SH 63 | 6.00 Nm | 1.25 kW | 2000 rpm | 1FK2206-2AC00-□□□0 |
| Siemens | 1FK22 Compact | SH 63 | 8.00 Nm | 2.50 kW | 3000 rpm | 1FK2206-3AF00-□□□0 |
| Siemens | 1FK22 Compact | SH 63 | 12.0 Nm | 3.14 kW | 2500 rpm | 1FK2206-4AE00-□□□0 |
| Siemens | 1FK22 Compact | SH 80 | 16.0 Nm | 3.35 kW | 2000 rpm | 1FK2208-3AC00-□□□0 |
| Siemens | 1FK22 Compact | SH 80 | 22.0 Nm | 4.60 kW | 2000 rpm | 1FK2208-4AC00-□□□0 |
| Siemens | 1FK22 Compact | SH 80 | 27.0 Nm | 5.65 kW | 2000 rpm | 1FK2208-5AC00-□□□0 |
| Siemens | 1FK22 Compact | SH 100 | 40.0 Nm | 6.28 kW | 1500 rpm | 1FK2210-3AB00-□□□0 |
| Siemens | 1FK22 Compact | SH 100 | 50.0 Nm | 7.85 kW | 1500 rpm | 1FK2210-4AB00-□□□0 |
Documentation & Technical Catalogs
1FK2 High Dynamic vs. 1FK2 Compact Selection Matrix
Engineering comparison between the High Dynamic (1FK21) and Compact (1FK22) motor designs:
| Design Variant | Rotor Inertia Characteristic | Peak Acceleration Potential | Load Inertia Ratio Matching | Optimized Machine Axes |
|---|---|---|---|---|
| SIMOTICS S-1FK21 (High Dynamic) | Extremely low rotor moment of inertia | Ultra-high angular acceleration ($a_{max}$) | Ideal for low external load inertia ratios ($J_L / J_M \le 3$) | Delta packaging robots, high-speed pick-and-place, electronic flying shears, feeder axes. |
| SIMOTICS S-1FK22 (Compact) | Medium-to-high rotor moment of inertia | High continuous and stall torque density | Excellent control stability with higher load inertia ($J_L / J_M \le 10$) | Rotary tables, vertical positioning axes, linear ball screw actuators, conveyor belt drives. |
Legacy Siemens 1FK7 to Next-Gen 1FK2 Migration Guide
Machine builders migrating from legacy SIMOTICS S-1FK7 systems to modern 1FK2 platforms benefit from significant space and wiring advantages:
| Legacy 1FK7 Platform Feature | Next-Gen SIMOTICS S-1FK2 Innovation | Operational & Design Benefit |
|---|---|---|
| Dual Cable System (Separate power & DRIVE-CLiQ cables) | One Cable Connection (OCC) with slim M12/M17 connector | Cuts cable track volume by up to 50%; reduces connection error risks during assembly. |
| Larger Motor Enclosure at equivalent torque ratings | Higher Torque Density Winding with reduced envelope | Enables tighter mechanical machine integration and smaller moving axis footprints. |
| External Buffer Battery for multi-turn absolute encoders | Electronic Magnetic Multi-Turn Sensor without battery | Zero maintenance overhead; avoids battery failure alarms during long-term storage or shipment. |
Expert Motion Sourcing & S210 Drive Integration by WeDrive
WE DRIVE HONGKONG LIMITED provides technical sizing, drive-matching verification, and worldwide supply for the entire Siemens SIMOTICS S-1FK2 Servo Motor portfolio. Whether your automation machinery demands a micro-positioning axis (1FK2102), a high-torque compact feed unit with brake (1FK2208-4AC00-1SB0), pre-assembled OCC hybrid cables (6FX5002 / 6FX8002 series), or complete SINAMICS S210 converter packages (6SL3210-5HB), our engineering team verifies every technical parameter before dispatch.
Transitioning to the 1FK2 servo family guarantees state-of-the-art dynamics, simplified one-cable wiring, and plug-and-play auto-tuning in TIA Portal. Contact our motion control specialists with your required torque, speed, and shaft execution parameters for rapid, authentic Siemens OEM quotations and international express delivery.
Transitioning to the 1FK2 servo family guarantees state-of-the-art dynamics, simplified one-cable wiring, and plug-and-play auto-tuning in TIA Portal. Contact our motion control specialists with your required torque, speed, and shaft execution parameters for rapid, authentic Siemens OEM quotations and international express delivery.
Core Benchmark Model Standard Configurations
- 1FK2102-0AG00-1SA0 (0.16 Nm)
- 1FK2102-1AG00-1SA0 (0.32 Nm)
- 1FK2103-2AG00-1SA0 (0.64 Nm)
- 1FK2103-4AG00-1SA0 (1.27 Nm)
- 1FK2104-4AF00-1SA0 (2.40 Nm)
- 1FK2104-5AF00-1SA0 (3.20 Nm)
- 1FK2105-4AF00-1SA0 (6.00 Nm)
- 1FK2106-3AF00-1SA0 (9.00 Nm)
- 1FK2106-4AF00-1SA0 (12.0 Nm)
- 1FK2204-5AF00-1SA0 (1.27 Nm)
- 1FK2204-6AF00-1SA0 (2.40 Nm)
- 1FK2205-2AC00-1SA0 (3.60 Nm)
- 1FK2205-4AF00-1SA0 (6.00 Nm)
- 1FK2206-2AC00-1SA0 (6.00 Nm)
- 1FK2206-3AF00-1SA0 (8.00 Nm)
- 1FK2208-3AC00-1SA0 (16.0 Nm)
- 1FK2208-4AC00-1SA0 (22.0 Nm)
- 1FK2208-5AC00-1SA0 (27.0 Nm)
- 1FK2210-3AB00-1SA0 (40.0 Nm)
- 1FK2210-4AB00-1SA0 (50.0 Nm)
