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SINUMERIK 840D

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Second Hand Siemens Sinumerik 840D Machinery for Sale
Term Description

Buy & Sell Used Machine Tools with Siemens SINUMERIK 840D CNC

The Siemens SINUMERIK 840D (both the proven classic Powerline featuring SIMODRIVE 611D drives and the contemporary Solution Line 840D sl with SINAMICS S120) represents the definitive global benchmark for demanding 5-axis machining centers, heavy gantry mills, and high-production multi-channel turning centers. Featuring an open NC core architecture, integrated SIMATIC S7-300 PLC, and world-class kinematic transformations, it delivers unparalleled manufacturing versatility and long-term production reliability.

Premier Machine Builders & Primary Industrial Applications

The SINUMERIK 840D is factory-fitted across premier European and international machinery:

  • 5-Axis Machining Centers & Gantry Mills: DMG MORI (DMU 50/70/80/100/125 series, duoBLOCK, monoBLOCK), Hermle, Chiron, Waldrich Coburg, Droop+Rein, Zimmermann, Starrag Heckert.
  • CNC Lathes & Turn-Mill Centers: Gildemeister CTX / GMX, Index G200 / G300, Traub TNX, Niles-Simmons, Weiler, Spinner.
  • Heavy Machinery & Special Applications: Vertical turret lathes, gear grinders, and automated flexible manufacturing cells (FMS) controlling up to 31 axes per NCU module.

Programming Flexibility, ShopMill/ShopTurn & 5-Axis Dynamics

The 840D seamlessly bridges shopfloor conversational operation and advanced DIN/ISO high-level coding:

  • ShopMill & ShopTurn: Intuitive conversational programming with graphical toolpath simulation, residual material detection, and automatic pocket cycles directly at the operator console.
  • 5-Axis Transformations (CYCLE800 & TRAORI): CYCLE800 for fast spatial plane alignment and TRAORI (Tool Center Point Management / TCPM) for smooth 5-axis continuous contour milling.
  • SINUMERIK Safety Integrated: Certified integrated functional safety routines (safely-limited speed, safe stop, monitored zones) ensuring total operator protection during machine setup.

Matching 5-Axis & Lathe Inventory: Discover our DMG MORI machining centers, Chiron FZ centers, and Index turning centers with SINUMERIK 840D.

📄 Technical Documentation & PDF Manuals for SINUMERIK 840D

Download verified technical specifications, brochures, and programming guidelines:

Note for Service Technicians & CNC Programmers: Inquiring about wiring schematics, parameter manuals, or PLC backup archives? Contact our engineering team.

Selling Machinery with Siemens 840D or Upgrading Your Machine Park?

Asset-Trade actively acquires inspected CNC machining centers and lathes equipped with Siemens SINUMERIK 840D and 840D sl across all vintages. Benefit from professional market appraisals, prompt payment, and turnkey machine removal. Request a free valuation and purchasing quote for your 840D machines today.

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Machine Information
Manufacturer: UNISIGN
Model: UNIMAC 5
Control: CNC > SIEMENS > SINUMERIK 840D
Year of build: 1997
Location:
UNISIGN UNIMAC 5 horizontal machining center for crankshaft machining Siemens 840 Control Specifications: Travel x = 1310 mm Travel y = 850 mm Travel z = 850 mm Twin pallet Rapid traverse x, y, z - axis 24,000 mm / min. Speed ​​range… Learn more

Frequently Asked Questions about used SINUMERIK 840D

What are the main advantages of the Siemens SINUMERIK 840D on used machinery?

The SINUMERIK 840D delivers superior processing power for complex 5-axis machining, an open architecture featuring a SIMATIC S7 PLC, and intuitive conversational cycles via ShopMill and ShopTurn. Its global popularity ensures long-term spare parts availability and engineering support.

What is the difference between SINUMERIK 840D Powerline and Solution Line (sl)?

The 840D Powerline operates on SIMODRIVE 611D drives and classic NCU units. The newer Solution Line (840D sl) integrates with modular SINAMICS S120 drives via digital DRIVE-CLiQ interfaces, more compact NCU modules, and the modern SINUMERIK Operate interface.

Which machine tool builders primarily utilize the SINUMERIK 840D?

Top German and European manufacturers such as DMG MORI, Hermle, Chiron, Index-Traub, Alzmetall, Heller, and Niles-Simmons standardize on the 840D across 5-axis centers, vertical turret lathes, and multi-spindle turning centers.

Does Asset-Trade purchase CNC machine tools equipped with Siemens 840D controls?

Yes. Asset-Trade actively purchases used machining centers and CNC lathes equipped with SINUMERIK 840D and 840D sl. We provide reliable market appraisals, direct upfront payment, and turnkey machine decommissioning and transport.