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Siemens 1FT6108-8AC71-1EB1 SIMOTICS S Absolute Encoder Servo

Siemens SIMOTICS S 1FT6 Servo Motor with Absolute Encoder

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ManufacturerSiemens

Part number1FT6108-8AC71-1EB1

Torque 70 Nm

Speed 2000 rpm

Cooling Natural

Mounting IM B5 (IM V1, IM V3)

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70 Nm Torque 2000 rpm Speed Absolute EnDat Encoder Integrated Holding Brake Smooth Shaft IP65 Protection No Homing Required

Product description

The Siemens 1FT6108-8AC71-1EB1 is a high-performance SIMOTICS S synchronous servo motor featuring an absolute encoder for advanced positioning. It delivers 70 Nm of torque at 2000 rpm with natural cooling. This model is designed for IM B5 mounting (IM V1, IM V3) and has a transversely right power and signal connector outlet. It incorporates an EnDat absolute encoder (2048 S/R), a smooth shaft with circular runout tolerance N, and includes a holding brake. A 10% derating is applied due to the absolute encoder. The motor has a vibration severity grade of N and is sealed with a Gamma sealing ring for IP65 protection.

This servo motor is ideal for applications demanding exact positioning, high dynamics, and the elimination of homing routines, such as complex automation systems, advanced robotics, and precision machine tools. The absolute encoder ensures position is known immediately upon startup, even after a power failure.

Stanlo Automation, a veteran-owned surplus parts distributor, offers the Siemens 1FT6108-8AC71-1EB1. We provide efficient access to specialized industrial automation components, helping you complete your projects with reliable and high-quality parts.

Technical specifications

Torque	70 Nm
Speed	2000 rpm
Cooling	Natural
Mounting	IM B5 (IM V1, IM V3)
Connector Outlet	Transverse Right
Encoder	Absolute EnDat 2048 S/R
Shaft	Smooth
Holding Brake	Yes
Vibration Severity	N
Seal	Gamma Sealing Ring (IP65)
Derating	10% (Absolute Encoder)

Common applications

Advanced Robotics

Precision Machine Tools

Complex Automation

Semiconductor Manufacturing

Automated Logistics

Servo Systems Requiring Absolute Positioning

Compatible systems

Compatible with Siemens drives and control systems supporting EnDat absolute encoders and 1FT6 servo motors.

Also known as

Siemens Servo with EnDat SIMOTICS S Absolute Motor 1FT6108 Absolute Encoder

Replaces / compatible with

This motor is suitable for replacing existing 1FT6 series motors that require absolute position feedback and a holding brake, offering enhanced positioning capabilities.

Technical note

Expert tip

The 10% derating is essential to consider when sizing the motor for applications that push its thermal limits, given the increased data processing demands of the absolute encoder.

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Frequently asked questions

What is the advantage of the EnDat absolute encoder in the Siemens 1FT6108-8AC71-1EB1?

The EnDat absolute encoder allows the motor to retain its position data even when power is lost, eliminating the need for homing routines upon startup. This significantly reduces cycle times and simplifies system commissioning in automated applications.