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Siemens 1FK7084-3BC71-1RA1 SIMOTICS S Motor

Siemens SIMOTICS S high-inertia synchronous motor 1FK7-HI

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ManufacturerSiemens

Part number1FK7084-3BC71-1RA1

PN 3.1kW

UDC 600V

M0 20Nm (100K)

NN 2000rpm

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SIMOTICS S high-inertia synchronous motor 3.1kW nominal power 2000rpm nominal speed Absolute encoder with DRIVE-CLiQ Shaft with feather key IP65 protection

Product description

The Siemens 1FK7084-3BC71-1RA1 is a high-inertia SIMOTICS S synchronous motor optimized for applications demanding precise control and high torque. It features a nominal power of 3.1kW, a 600V DC link voltage, and a standstill torque of 20Nm (at 100K). This motor operates at a nominal speed of 2000rpm and is naturally cooled with an IMB 5 construction.

This model includes a 20-bit + 12-bit multiturn absolute encoder with a DRIVE-CLiQ interface for enhanced data transfer and diagnostics. It has a shaft with a feather key and tolerance N, but it is supplied without a holding brake. The degree of protection is IP65.

Stanlo Automation, a veteran-owned distributor specializing in surplus industrial automation parts, offers the Siemens 1FK7084-3BC71-1RA1. We ensure you receive quality components backed by our commitment to service and reliability.

Technical specifications

PN	3.1kW
UDC	600V
M0	20Nm (100K)
NN	2000rpm
Cooling	Naturally cooled
Design	IMB 5 (IM V1, IM V3)
Flange	1
Encoder	Absolute 20-bit + 12-bit multiturn DRIVE-CLiQ (AM20DQI)
Shaft	With feather key, tolerance N
Brake	Without holding brake
Protection	IP65

Common applications

Industrial Automation

Machine Tools

Robotics

Servo Applications

Precise Motion Control

Compatible systems

Siemens SIMOTICS Drives SINAMICS Drives

Also known as

Siemens 1FK7-HI Motor SIMOTICS S 1FK7-HI High Inertia Servo Motor

Replaces / compatible with

This motor is suitable for applications where a holding brake is not required, offering a direct replacement for similar Siemens motors or integration into new systems.

Technical note

Expert tip

The absence of a holding brake requires external braking or application design considerations for maintaining position when power is removed.

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Frequently asked questions

Does the Siemens 1FK7084-3BC71-1RA1 motor come with a holding brake?

No, the Siemens 1FK7084-3BC71-1RA1 motor is supplied without a holding brake. It features a shaft with a feather key and IP65 protection, along with an absolute encoder with DRIVE-CLiQ.