CMS Poseidon

$400,000 - $900,000+ (configured to order) Updated 2026-03-16

Key Specifications

Spindle Taper

HSK-63F

Rapid Traverse

Up to 60 m/min (2,362 ipm)

Spindle Power

Up to 33 kW (44 hp)

machine type

Moving-bridge 5-axis CNC router

x travel

Up to 12,000 mm (472 in) depending on configuration

y travel

Up to 4,000 mm (157 in)

Overview

The CMS Poseidon is a high-performance 5-axis CNC router from CMS S.p.A. of Zogno, Italy, purpose-built for large composite panels, boat hull components, and aerospace structural parts. CMS has been a leading Italian builder of advanced machining systems for over 50 years, and the Poseidon represents their flagship capability in the composite router segment. The machine is designed to address the specific demands of marine and aerospace composite fabrication — large working envelopes, aggressive routing of thick laminate stacks, and the structural stiffness necessary to maintain accuracy on deep z-axis plunge cuts into honeycomb core sandwich panels.

The Poseidon uses a moving-bridge architecture with a fixed worktable, allowing very large parts to remain stationary while the structure traverses. The 5-axis electrospindle head provides full simultaneous 5-axis motion using a fork-type or A/C-axis configuration depending on the model variant. This allows the Poseidon to perform trim-to-edge operations on compound-curved boat hull skins, fuselage panels, and wind turbine blade sections while keeping the cutting tool normal to the surface — a requirement for clean cut quality and proper tool engagement in fiber composites.

CMS equips the Poseidon with high-speed electrospindles typically ranging from 24,000 to 40,000 RPM, reflecting the need for very high surface speeds when routing carbon fiber and fiberglass with solid carbide and diamond-coated tools. The machine's gantry structure is built from welded and stress-relieved steel with precision-ground linear guides, providing the structural loop stiffness needed to resist cutting forces during aggressive roughing of thick CFRP or aluminum-faced honeycomb panels.

In the marine sector, the Poseidon is used by production boat builders and custom yacht yards for routing hull skins, deck panels, structural bulkheads, and interior components. In aerospace, it serves Tier 1 suppliers machining composite primary and secondary structure panels. CMS offers the Poseidon with integrated vacuum fixturing, automatic tool changers, mist-free dust extraction systems, and optional robotic automation interfaces for high-volume production cells.

Full Specifications

Parameter	Value
Machine Type	Moving-bridge 5-axis CNC router
X Travel	Up to 12,000 mm (472 in) depending on configuration
Y Travel	Up to 4,000 mm (157 in)
Z Travel	Up to 1,500 mm (59 in)
A Axis Range	+/- 120°
C Axis Range	360° continuous
Spindle Speed	24,000 – 40,000 RPM (electrospindle)
Spindle Motor Power	Up to 33 kW (44 hp)
Spindle Taper	HSK-63F
Rapid Traverse Rate	Up to 60 m/min (2,362 ipm)
CNC Control	Siemens Sinumerik 840D sl or NUM
Tool Changer	Automatic, 12-24 positions
Frame	Welded stress-relieved steel with precision ground linear guides
Primary Materials	CFRP, fiberglass, Kevlar, aluminum honeycomb sandwich, foam core
Modelposeidonbrandcmstypegantry Machining Centers Control	Contact Sales Rep.
Model	POSEIDON
Brand	CMS
Type	Gantry Machining Centers (incld. Bridge & Double Column)
Power375 Hprpm24000 Rpm	ControlCNC
Power375 Hp	RPM24,000 RPM
Power	37.5 hp
Rpm	24,000 RPM
Cnc Control	CNC
Looking To Purchase A New Cms Poseidon	Contact Sales Rep.
Wanteds	(1)
Illinois	Postedabout 1 monthago
Cms 5 Axis Poseidon Large Format Cnc Router Bigger Is Better	Postedabout 1 monthago

Specifications sourced from machinetools.com — verified 2026-03-28

Strengths & Limitations

Strengths

Extremely large working envelope — X travel to 12 meters — handles full boat hull sections and large aerospace panels in a single setup without repositioning
High-speed electrospindle up to 40,000 RPM and 33 kW optimized for composite routing with minimal delamination and clean fiber cut quality
Full simultaneous 5-axis A/C-axis head maintains correct cutter-to-surface orientation on compound-curved marine and aerospace composite structures
Strong European build quality with Siemens Sinumerik 840D sl control, providing deep integration with aerospace and marine CAM environments

Limitations

Pricing starts above $400,000 and can exceed $900,000 for large-format configurations, placing it out of reach for smaller composite shops
Italian origin means longer parts lead times and higher service costs in North America compared to domestically manufactured alternatives
Large footprint and substantial facility requirements — dust extraction, compressed air, vacuum systems, and structural floor loading — add significant infrastructure costs

Best For

Marine production boat builders and custom yacht yards routing large fiberglass and carbon fiber hull panels, decks, and structural bulkheads Aerospace Tier 1 suppliers machining large composite fuselage skins, wing panels, nacelle components, and structural fairings Wind energy manufacturers routing and trimming large fiberglass blade root sections and spar cap laminates Defense composite shops producing large radar domes, antenna housings, and structural fairings from fiberglass and CFRP

Frequently Asked Questions

01 What is CMS and where are Poseidon machines built?

CMS S.p.A. is an Italian machine tool builder headquartered in Zogno, Bergamo Province, Italy. Founded in 1969, CMS builds advanced CNC machining systems for composites, glass, stone, aluminum, and plastics. The Poseidon is manufactured in Italy and is sold globally through a network of distributors and direct sales offices, including a North American presence.

02 How large can a Poseidon be configured?

The Poseidon can be configured with X-axis travel up to 12 meters or more for custom applications, making it one of the largest production 5-axis composite routers available. This scale is necessary for single-setup machining of full boat hull skins, large wind turbine blade sections, or wide-body aircraft fuselage panel segments.

03 What control system does the CMS Poseidon use?

CMS typically equips the Poseidon with a Siemens Sinumerik 840D sl control, which is the standard for high-end European composite machining. Some configurations use NUM control. Both options support full 5-axis simultaneous interpolation, RTCP (Rotating Tool Center Point) compensation, and integration with aerospace CAM outputs from Siemens NX, Catia, and similar platforms.

04 How does the Poseidon handle dust and particle extraction for composite routing?

CMS integrates high-volume dust extraction directly at the spindle head, with the extraction hood designed to capture composite particle dust close to the cut zone before it can become airborne. For carbon fiber routing, proper extraction is critical — CFRP dust is electrically conductive and hazardous. CMS works with customers to size extraction systems for specific applications and routing rates.

05 Can the Poseidon cut aluminum as well as composites?

Yes, the Poseidon can machine aluminum sheet and aluminum-faced honeycomb sandwich panels. However, it is not a substitute for a dedicated machining center for structural aluminum milling. For composite-aluminum hybrid parts common in aerospace secondary structure, the Poseidon handles routing, trimming, and hole patterns but would not be used for full depth-of-cut aluminum pocket milling at production rates.