SINUMERIK

Siemens SINUMERIK is the CNC (computer numerical control) platform used across metalworking, machining, grinding, laser processing, and other precision manufacturing applications. SINUMERIK systems coordinate spindle drives, axis motion, tool management, and operator interaction within a single integrated architecture, making them the control backbone of machine tools used in automotive, aerospace, die and mold, and general precision manufacturing environments.

When a SINUMERIK component fails or reaches the end of life, replacement options through standard OEM channels are often constrained by long lead times or discontinued status. Maintenance teams managing installed SINUMERIK equipment need access to replacement hardware outside of those channels to keep machines running.

PLC Direct supplies Siemens SINUMERIK hardware to customers for maintenance and component replacement in existing SINUMERIK installations. Our collection covers CNC control units, operator panels, handheld terminals, connection cables, and associated hardware spanning multiple SINUMERIK generations.

Where Siemens SINUMERIK Hardware Is Used

A failed SINUMERIK control component can render a precision machine tool entirely offline. Unlike general-purpose automation hardware, CNC control components are system-specific and cannot be substituted with generic alternatives, which makes sourcing the correct replacement quickly a real operational priority for maintenance teams.

Facilities that depend on Siemens SINUMERIK hardware include:

• Metalworking and machining operations running multi-axis CNC machine tools

• Automotive and Tier 1 supplier facilities with high-volume precision machining lines

• Aerospace and defense manufacturers with tight tolerancing requirements

• Die and mold shops running complex 5-axis machining centers.

• Grinding and turning operations with long-running installed equipment

• Tool and die facilities maintaining older SINUMERIK-based machine tools

When a SINUMERIK operator panel, handheld terminal, or drive connection cable needs to be replaced, sourcing the correct component from available stock minimizes machine downtime and avoids extended lead times.

Siemens SINUMERIK Products

The SINUMERIK collection at PLC Direct spans CNC control hardware, operator interface components, handheld devices, and cabling used across multiple SINUMERIK platform generations. All product families and part number references below are confirmed on the live PLC Direct collection page.

Product Families

• SINUMERIK Handheld Terminal HT 2: The HT 2 is a portable operator terminal for SINUMERIK systems, featuring a 128 x 64 pixel display and designed for manual machine operation and setup tasks at the machine. Part number 6FC5303-0AA00-2AA0 is confirmed in stock.

• SINUMERIK/SIMOTION Fan and Battery Modules: Replacement fan and battery modules for SINUMERIK NCU 7x0 and SIMOTION D4x5-2 units. Part number 6FC5348-0AA02-0AA0 is a spare part for these control units, with lifecycle status at announcement of phase-out. Stocking this part supports proactive maintenance planning for installed NCU 7x0 equipment.

• MOTION-CONNECT Signal Cables for SINUMERIK 840D sl: Pre-assembled DRIVE-CLiQ signal cables with 24 V capability, released for SINAMICS S120 Motor Module connections in SINUMERIK 840D sl installations. Part number 6FX8002-2DC10-1EA0 (MOTION-CONNECT 800PLUS, IP20/IP67, 40 m) is confirmed in stock.

• SINUMERIK Mini Handheld Unit: Compact handheld unit for SINUMERIK systems with a 2.1 m spiral cable (stretchable to 3.5 m), 2-channel emergency stop, 3-stage acknowledgment button with metal connection plug, and handwheel with magnetic latching. Part number 6FX2007-1AD03 is confirmed available.

Available at PLC Direct

• SINUMERIK Handheld Terminal HT 2 (128 x 64 pixel display, 6FC5303-0AA00-2AA0)

• SINUMERIK/SIMOTION double fan/battery modules for NCU 7x0 and D445-1/D4x5-2 (6FC5348-0AA02-0AA0)

• MOTION-CONNECT 800PLUS DRIVE-CLiQ signal cables, IP20/IP67, 24 V, for SINUMERIK 840D sl (6FX8002-2DC10-1EA0)

• SINUMERIK mini handheld units with emergency stop, enabling button, and handwheel (6FX2007-1AD03)

What to Know Before You Buy Siemens SINUMERIK Parts

Ordering the right SINUMERIK component requires matching the part to the specific CNC generation and hardware configuration in service. SINUMERIK hardware is not cross-compatible across all platform generations, and incorrect parts can cause compatibility issues that delay machine restart.

Hardware condition options: We supply SINUMERIK hardware as surplus sealed, refurbished, and used. Surplus sealed units are factory-sealed stock. Refurbished units have been tested and restored to operational condition.

Platform compatibility: SINUMERIK components are generation-specific. Cables, operator panels, and handheld terminals designed for SINUMERIK 840D sl are not necessarily interchangeable with hardware from earlier SINUMERIK generations. Always verify the target CNC platform before ordering.

Lifecycle status: Several SINUMERIK components in the PLC Direct collection are at phase-out or cancellation status with Siemens. This is standard for mature CNC platforms with long machine service lives, and these parts are often no longer available through OEM channels. Sourcing surplus sealed or refurbished stock is frequently the most practical path for maintenance teams managing older SINUMERIK installations.

Cable length and connector type: DRIVE-CLiQ cables in the MOTION-CONNECT 800PLUS range are ordered to specific lengths. Confirm the required cable run length before ordering, as pre-assembled cables are not field-trimmed.

Warranty: All Siemens SINUMERIK hardware purchased from PLC Direct includes a standard 1-year warranty covering defects and functionality, applicable to surplus sealed, refurbished, and used products.