SIEMENS 1FT6105-8AC71-4AG0 Synchronous Servo Motor – SIMOTICS S-1FT6 Series
Imagine a high-speed CNC machining center suddenly losing positional accuracy mid-cycle — spindle drift, axis oscillation, and scrapped workpieces cascade into costly downtime. Or picture a robotic welding arm that can no longer hold torque at low speeds, causing weld seam deviations that fail quality inspection. In precision-driven industrial environments, the servo motor is not a peripheral component — it is the heartbeat of motion control. Without a reliable, spec-matched unit like the SIEMENS 1FT6105-8AC71-4AG0, entire production lines grind to a halt.
The 1FT6105-8AC71-4AG0 belongs to Siemens’ flagship SIMOTICS S-1FT6 synchronous servo motor series — a platform engineered for high dynamic response, compact frame design, and seamless integration with SINAMICS drive systems. Within the 1FT6 family, the 1FT6105 frame size delivers a balance of high torque density and thermal stability that makes it a preferred choice for demanding axis applications in machine tools, packaging machinery, and industrial robotics worldwide. This model is widely deployed across European, Asian, and North American manufacturing facilities, reflecting its proven reliability in global industrial automation ecosystems.
Technical Specifications
- Part Number / SKU: 1FT6105-8AC71-4AG0
- Brand: SIEMENS
- Series: SIMOTICS S-1FT6
- Motor Type: Permanent Magnet Synchronous Servo Motor
- Frame Size: 1FT6105 (Size 100)
- Cooling Method: Natural Convection (Self-Cooled)
- Encoder: Absolute Encoder (as indicated by suffix -4AG0)
- Shaft Type: Plain shaft with key (as per order suffix)
- Protection Class: IP64 (standard)
- Insulation Class: F
- Weight: Approx. 4.46 kg
- Compatible Drive: SINAMICS S120 / S110
Note: Detailed electrical parameters (rated torque, speed, power) are available upon request. Please contact us with your application requirements.
Key Features & Benefits
- High Dynamic Response: Optimized rotor inertia for rapid acceleration and deceleration cycles, minimizing cycle time in high-throughput applications.
- Absolute Encoder Integration: The -4AG0 encoder suffix provides absolute position feedback, eliminating the need for homing routines after power-up and enhancing safety in multi-axis systems.
- Compact & Lightweight Design: The 1FT6 series features a high power-to-weight ratio, enabling installation in space-constrained machine designs without sacrificing torque output.
- Thermal Stability: Class F insulation and optimized winding design ensure reliable operation across wide ambient temperature ranges in industrial environments.
- Plug-and-Play with SINAMICS: Native compatibility with Siemens SINAMICS drive families reduces commissioning time and simplifies parameter configuration via STARTER or TIA Portal.
- Long Service Life: Precision bearings and robust housing construction deliver extended MTBF, reducing unplanned maintenance intervals.
Industry & Equipment Applications
- CNC Machine Tools: Feed axis and spindle positioning in machining centers, lathes, and grinding machines.
- Industrial Robotics: Joint actuation in articulated robots and SCARA systems requiring high torque at low speed.
- Packaging Machinery: High-speed pick-and-place, filling, and sealing equipment demanding precise motion profiles.
- Printing & Converting: Register control and tension management in web-fed printing and converting lines.
- Semiconductor & Electronics Manufacturing: Precision positioning stages in wafer handling and PCB assembly equipment.
- Textile Machinery: Warp beam drives and yarn tension control systems.
System Integration & Compatible Parts
The SIEMENS 1FT6105-8AC71-4AG0 is designed for direct integration with the following Siemens automation components:
- Drive Systems: SINAMICS S120 (booksize / chassis), SINAMICS S110
- Controllers: SINUMERIK 840D sl / 828D (CNC), SIMATIC S7-300/400/1500 (PLC)
- Power Modules: Compatible ALM/SLM modules within SINAMICS S120 infrastructure
- Cables & Connectors: MOTION-CONNECT 500/800 power and signal cables (pre-assembled or by meter)
- Gearboxes: SIMOGEAR helical and bevel-helical gearboxes for torque multiplication
If you need assistance identifying compatible drive modules, cables, or spare parts for your existing system, our technical team is ready to support your BOM review.
Our Quality Assurance Process
At Konmask.com, every SIEMENS component we supply undergoes a rigorous multi-stage verification process before shipment:
- Authenticity Verification: Cross-referencing serial numbers and date codes against Siemens’ product identification standards.
- Visual & Mechanical Inspection: Checking shaft integrity, connector condition, encoder housing, and nameplate data against the ordered part number.
- Packaging Integrity Check: Ensuring original or equivalent protective packaging to prevent transit damage.
- Documentation: Providing material certificates and inspection reports upon request for regulated industries.
We source from authorized distribution channels and maintain strict supplier qualification criteria to protect our customers from counterfeit components.
How to Order
- Submit your inquiry via the “Get a Quote” button or email support@konmask.com.
- Provide your required quantity, delivery timeline, and any application details.
- Receive a formal quotation with lead time and shipping options within 24 business hours.
- Confirm the order and receive proforma invoice for payment processing.
- Shipment with full tracking information and commercial documentation.
We support T/T bank transfer, and can accommodate standard B2B procurement workflows including PO-based ordering for qualified accounts.
Why Choose Konmask.com?
- Industrial Automation Specialists: We focus exclusively on industrial control components — PLC modules, DCS systems, servo drives, and motion control hardware from leading global brands.
- Global Sourcing Network: Access to both new and surplus inventory across SIEMENS, ABB, Rockwell, Mitsubishi, and other major automation brands.
- Technical Pre-Sales Support: Our engineers can assist with part number cross-referencing, compatibility verification, and application suitability assessment.
- Fast Response: Inquiry-to-quotation turnaround within 24 hours for standard parts; expedited sourcing for urgent requirements.
- Secure Packaging & Reliable Logistics: Export-grade packaging with DHL, FedEx, and freight forwarding options to over 80 countries.
- After-Sales Support: Dedicated account management and post-delivery technical assistance.
Frequently Asked Questions
- Q: Is the SIEMENS 1FT6105-8AC71-4AG0 a new or refurbished unit?
- A: We supply both new (original factory) and professionally refurbished units depending on availability and customer requirements. The condition will be clearly stated in your quotation.
- Q: What is the lead time for this part?
- A: Lead time varies by stock availability. In-stock units typically ship within 3–5 business days. For sourced units, lead time is 2–4 weeks. Contact us for current availability.
- Q: Can you provide a warranty for this servo motor?
- A: Yes. New units carry the standard Siemens warranty. Refurbished units come with a Konmask.com 90-day functional warranty. Terms are detailed in the sales agreement.
- Q: Do you support international shipping?
- A: Yes. We ship globally via DHL Express, FedEx International, and sea freight for bulk orders. Export documentation including commercial invoice and packing list is provided as standard.
- Q: Can I get a datasheet or technical drawing for this model?
- A: Yes. Siemens product documentation is available through our technical team upon request. Please include your part number and application details in your inquiry.
- Q: Is this motor compatible with my existing SINAMICS S120 system?
- A: The 1FT6105-8AC71-4AG0 is designed for use with SINAMICS S120 drive systems. However, compatibility depends on your specific drive configuration, firmware version, and motor module rating. We recommend sharing your system topology for a pre-sales compatibility review.
© 2026 Konmask.com. All rights reserved.
Original Source: https://Konmask.com
Contact: support@konmask.com | +0086 19859288691
{
“@context”: “https://schema.org”,
“@graph”: [
{
“@type”: “Product”,
“name”: “SIEMENS 1FT6105-8AC71-4AG0 Synchronous Servo Motor”,
“description”: “SIEMENS 1FT6105-8AC71-4AG0 SIMOTICS S-1FT6 series permanent magnet synchronous servo motor with absolute encoder. Designed for CNC machine tools, robotics, and industrial automation. Compatible with SINAMICS S120 drive systems.”,
“sku”: “1FT6105-8AC71-4AG0”,
“mpn”: “1FT6105-8AC71-4AG0”,
“brand”: {
“@type”: “Brand”,
“name”: “SIEMENS”
},
“manufacturer”: {
“@type”: “Organization”,
“name”: “Siemens AG”,
“url”: “https://www.siemens.com”
},
“category”: “Servo Motor / Industrial Automation”,
“url”: “https://konmask.com/products/siemens-1ft6105-8ac71-4ag0-synchronous-servo-motor-simotics-s-1ft6”,
“offers”: {
“@type”: “Offer”,
“url”: “https://konmask.com/products/siemens-1ft6105-8ac71-4ag0-synchronous-servo-motor-simotics-s-1ft6”,
“priceCurrency”: “USD”,
“availability”: “https://schema.org/InStock”,
“seller”: {
“@type”: “Organization”,
“name”: “Konmask.com”,
“url”: “https://konmask.com”
}
},
“additionalProperty”: [
{“@type”: “PropertyValue”, “name”: “Series”, “value”: “SIMOTICS S-1FT6”},
{“@type”: “PropertyValue”, “name”: “Motor Type”, “value”: “Permanent Magnet Synchronous Servo Motor”},
{“@type”: “PropertyValue”, “name”: “Frame Size”, “value”: “1FT6105 (Size 100)”},
{“@type”: “PropertyValue”, “name”: “Encoder”, “value”: “Absolute Encoder”},
{“@type”: “PropertyValue”, “name”: “Compatible Drive”, “value”: “SINAMICS S120 / S110”},
{“@type”: “PropertyValue”, “name”: “Protection Class”, “value”: “IP64”},
{“@type”: “PropertyValue”, “name”: “Insulation Class”, “value”: “F”}
]
},
{
“@type”: “FAQPage”,
“mainEntity”: [
{
“@type”: “Question”,
“name”: “Is the SIEMENS 1FT6105-8AC71-4AG0 a new or refurbished unit?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “We supply both new (original factory) and professionally refurbished units depending on availability and customer requirements. The condition will be clearly stated in your quotation.”
}
},
{
“@type”: “Question”,
“name”: “What is the lead time for the 1FT6105-8AC71-4AG0?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “Lead time varies by stock availability. In-stock units typically ship within 3–5 business days. For sourced units, lead time is 2–4 weeks. Contact us for current availability.”
}
},
{
“@type”: “Question”,
“name”: “Do you provide warranty for this servo motor?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “Yes. New units carry the standard Siemens warranty. Refurbished units come with a Konmask.com 90-day functional warranty. Terms are detailed in the sales agreement.”
}
},
{
“@type”: “Question”,
“name”: “Do you support international shipping for the 1FT6105-8AC71-4AG0?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “Yes. We ship globally via DHL Express, FedEx International, and sea freight for bulk orders. Export documentation including commercial invoice and packing list is provided as standard.”
}
},
{
“@type”: “Question”,
“name”: “Is the 1FT6105-8AC71-4AG0 compatible with SINAMICS S120?”,
“acceptedAnswer”: {
“@type”: “Answer”,
“text”: “The 1FT6105-8AC71-4AG0 is designed for use with SINAMICS S120 drive systems. Compatibility depends on your specific drive configuration and motor module rating. We recommend sharing your system topology for a pre-sales compatibility review.”
}
}
]
}
]
}


