Siemens 1FK7081-5AZ91-1ZZ9-Z-KUKA Servomotor

This is a SIMOTICS S-series 1FK7 synchronous servo motor customized by Siemens for KUKA robots, commonly used for joint drives in KUKA industrial robots. The suffix “-KUKA” indicates it is specially designed and integrated for KUKA robot systems. The official base model is 1FK7081-5AZ91-1ZZ9-Z, the common Z option is S04, and the corresponding KUKA internal model is MG_110_130_40_S0.

Modellaufschlüsselung (1FK7081-5AZ91-1ZZ9-Z)

Key Technical Specifications

Kernfunktionen

1. Absolute encoder: No homing required; position data retained after power loss; strong anti-interference performance
2. High overload capacity: Max torque ≥ 3x rated torque, suitable for dynamic loads in robots
3. IP65 protection: Dustproof and waterproof, ideal for harsh industrial environments
4. KUKA-specific interface: Seamless integration with KUKA robot controllers and servo drives
5. Built-in temperature sensor: Monitors motor temperature in real time and protects against overload damage

Anwendungen

Joint drive for KUKA industrial robots: Suitable for KR-series articulated robots

High-precision automation equipment: Automated production lines requiring accurate positioning and dynamic response

Material handling systems: Handling and palletizing with robot payload below 50kg

Kompatibilität & Replacement Information

1. Compatible drives: KSD 16, KSP20, KSP40, KSP64
2. Related models in the same series:

1FK7081-5AZ91-1ZZ9-ZP66+S10 (with P66 and S10 options)

1FK7101-5AZ91-1ZZ9-Z S07 (higher power version)

3. Notiz: This model is DISCONTINUED by the manufacturer; most units on the market are refurbished or spare parts.

Wartung & Sourcing Tips

1. Obtain original parts through KUKA official after-sales service or authorized distributors.
2. For repairs, use professional industrial robot servo motor service providers to ensure compatibility with KUKA systems.
3. Verify motor options (z.B., S04, S10) match the original system before replacement.

Complete Application Guide for Siemens 1FK7081-5AZ91-1ZZ9-Z-KUKA Servo Motor

This motor is a Siemens SIMOTICS S-series 1FK7 synchronous servo motor customized for KUKA robots, with core advantages of 2.4/2.5kW power, 5.8Nm rated torque, 18.9Nm peak torque and IP65 protection. It is mainly used as a joint drive for KUKA industrial robots, compatible with KSD 16/20/40/64 drives. KUKA internal model: MG_110_130_40_S0 (Z option: typically S04).

1. Core Application: KUKA Robot Joint Drive

Designed exclusively for KUKA robots, mainly installed in axes 2–6 of light-to-medium payload robots to provide precise position control and dynamic response.

2. Branchenanwendungen

Automotive Manufacturing (Core Field)

Body assembly: Door/dashboard installation, seat assembly, bolt fastening; repeatability ±0.03mm

Welding: Arc welding, spot welding, laser welding; stable torch positioning

Component machining: Engine/gearbox handling, machine tool loading

Pre-treatment for painting: Part positioning; IP65 resistant to moisture and dust

Electronics & Semiconductor

Precision assembly: PCB insertion, chip packaging, electronic component pick-and-place (bis zu 2000 cycles/min)

Inspektion & testing: Visual inspection, functional testing; high positioning accuracy

Cleanroom applications: Wafer handling (with upgraded protection)

General Industrial Automation

Material handling: Precise handling and palletizing for parts <50kg

Machine tool tending: Automatic loading/unloading for CNC machines, 24/7 operation

Verpackung & sorting: Food/pharmaceutical packaging, logistics sorting

Assembly automation: Home appliance & 3C product assembly

Special Processes

Metalworking: Laser cutting/welding, grinding/polishing

Plastics & rubber: Injection molding part removal, mold change

Medical devices: Component assembly, pharmaceutical packaging

Woodworking: Panel cutting, furniture assembly

3. Technical Matching Scenarios

4. Typical Application Cases
5. Automotive component assembly: Drives axes 3–4 on KR AGILUS for dashboard fastening; cycle time 8s/part, accuracy ±0.02mm.
6. 3C product inspection: Drives axes 2–5 on KR CYBERTECH nano with vision for screen defect detection; speed 3m/s, repeatability ±0.01mm.
7. Food packaging: Drives axes 2–4 on KR IONTEC for biscuit/chocolate packing; IP65, 24/7 operation.
8. CNC automation: Drives axes 3–5 on KR CYBERTECH for lathe tending; utilization increased from 60% Zu 90%.
9. Limitations & Alternativen

Unsuitable for:

Base axis (axis 1) of robots >50kg (unzureichendes Drehmoment)

Continuous full-load operation (recommend ≤80% rated load)

Extreme temperatures >85°C or < -20°C

Alternativen:

Higher power: 1FK7101 (3.5kW) or 1FK7121 (5.5kW)

Higher protection: IP67 custom version

Continuous heavy load: KUKA-customized forced-cooled 1FK7 version

The Siemens 1FK7081-5AZ91-1ZZ9-Z-KUKA servo motor is a core power component for KUKA light-to-medium payload robots. It features precise control, high dynamic response and industrial-grade protection, widely used in automotive, electronics and general industry automation, especially for high-precision, high-speed, high-reliability joint drive applications.

Siemens 1FK7081 Motor Series, Markenübergreifende Referenz & Order Numbers

1. Modellbenennungskonvention

2. Complete Model List

Compact Self-Cooled Series (1FK7081-2Axx)

High-Inertia Self-Cooled Series (1FK7081-3Bxx)

KUKA Robot Custom Series (1FK7081-5AZ91)

Important Note: KUKA spare part number for 1FK7081-5AZ91-1ZZ9-Z is 00-115-925. This model is discontinued; market supply is mostly refurbished or spare parts.

3. Cross-Brand Model Comparison

Selection Tip: Match rated torque, Geschwindigkeit, encoder, shaft type, protection for compatibility.

4. Bestellung & Procurement Guide

Standard Ordering

Channel: Siemens Industry Mall

Format: 1FK7081 + Serie + Kühlung + Encoder + Shaft + Optionen

Beispiel: 1FK70812AC711UA0

KUKA Custom Model

Channel: KUKA HUB or authorized distributors

Spare part No.: 00-115-925

Must match KUKA KRC4/KRC5 and KSD 16/20/40/64

Replacement Suggestions

For discontinued models:

Newer Siemens 1FK7-2Axx series

1FK7101 (3.5kW)

KUKA-compatible motors from Yaskawa etc.

Required information: full model, application, quantity, lead time, special requirements.

5. Key Parameter Summary