1FK7081-5AZ91-1ZZ9-Z (Para KUKA) Servomotor Siemens

This is a SINAMICS/SIMOTICS S1FK7 series compact synchronous servo motor, a custom model dedicated for KUKA robot joint axes, commonly used for joint drives in small and mediumsized KUKA robots.

1. Model Explanation

1FK7: Siemens synchronous servo motor series

081: Frame size 80 milímetros

5AZ91: Voltage / winding / resolver encoder configuration

1ZZ9: Mechanical design / cable outlet / mounting adaptation

z: Special specification (custom for KUKA robots)

S11: Internal adaptation code for KUKA

2. Parámetros eléctricos básicos

Tipo: Permanent magnet synchronous servo motor

Rated power: 1.7 kilovatios

Rated speed: 3000 rpm

Maximum speed: 6000 rpm

Rated torque: 5.4 Nuevo Méjico

Stall torque: 13 Nuevo Méjico

Tensión nominal: 400 V threephase

Corriente nominal: aprox. 3.7 A

Feedback: Resolver

Cooling method: Selfcooled IC410

3. Mecánico & Protección

Marco: 80 milímetros

Protection rating: IP65 (alojamiento) / IP67 (shaft end)

Clase de aislamiento: Clase F

Compatible interface: Dedicated mechanical & electrical interface for KUKA robots

4. Applications

Joint axis drive for KUKA robots

Typical compatibility: Robots with KR C4 / KR C5 controllers

5. Direct Replacement Models

Original identical model: 1FK7081-5AZ91-1ZZ9-Z S11

Functional replacement: Samespec 1FK7081 series KUKAdedicated servos (encoder and interface must be verified)

Complete Model Guide for Siemens 1FK7 Series Compact Synchronous Servo Motors

1. Series Overview & Naming Rules

The Siemens 1FK7 series (SIMOTICS S1FK7) are permanent magnet synchronous servo motors, divided into three types: Connecticut (Compact), HD (High Dynamic), HI (High Inertia).

The following focuses on the full CT Compact models (selfcooled IC410, IMB5 mounting), available in Generation 1 (5A series) and Generation 2 (2A series), with Generation 2 as the current mainstream.

Model Naming Convention (1FK7xxxxxxxxxxxxxxZ)

2. Complete Model List (by Frame Size / Shaft Height)
3. 20 mm Shaft Height (01 Serie, 0.18–0.35 kW)

2. 30 mm Shaft Height (02 Serie, 0.38–0.85 kW)

3. 40 mm Shaft Height (03/04 Serie, 1.15–3 kW)

4. 60 mm Shaft Height (06 Serie, 3–11 kW)

5. 80 mm Shaft Height (08 Serie, 8–20 kW)

6. 100 mm Shaft Height (10 Serie, 18–48 kW)

3. Special Custom Models (For KUKA Robots)

4. Encoder & Cooling Options
5. Encoder Types

Estándar: DRIVECLiQ absolute encoder (20bit singleturn / 12bit multiturn)

KUKA dedicated: Resolver

Opcional: Incremental encoder (2048 lines)

2. Cooling Methods

Estándar: Selfcooled IC410 (IP65 protection)

Opcional: Forcedair cooled IC416 (for continuous highload operation)

5. Replacement Model Guide
6. Generation replacement: Gen1 5A series → Gen2 2A series (p.ej., 1FK70815AZ91 → 1FK70812AZ91), mounting dimensions and electrical interfaces remain compatible
7. Power upgrade: Same frame size, different length codes (p.ej., 081 → 083, power from 12 kW to 16 kilovatios)
8. Function upgrade: Standard → KUKA dedicated (requires 1ZZ9 mechanical interface and resolver)
9. Selection Guidelines
10. Power matching: Calculate required rated power and torque based on load; 20% margin recommended
11. Speed requirement: Confirm maximum speed meets application (estándar 6000 rpm, some up to 8000 rpm)
12. Encoder selection: Absolute / incremental / resolver based on control system
13. Protection rating: Standard IP65, shaft IP67, adecuado para entornos industriales hostiles
14. Custom requirements: For KUKA robots and special applications, select dedicated models with 1ZZ9 suffix and Z code