Large Machinery Enclosures

Structural steel framework enclosures for large industrial machinery, CNC machining centres, robotic welding and handling cells, industrial press guards, pump and compressor acoustic enclosures, turbine and generator housings, and large process machinery guards. Manufactured in sections for site assembly with dimensional alignment provisions at all section joints. Structural frame, panel infill, access doors, maintenance hatches, safety interlock provisions, acoustic lining, and surface finish are all fabricated and verified before dispatch. Enclosure geometry, section split positions, and all structural provisions are defined by your design.

Primary Frame Material

S355JR structural steel (EN 10025) — RHS, SHS, UB, UC, and channel sections. S275JR where lower strength is adequate.

Frame Member Sizing

Minimum 50×50×4 mm RHS for secondary frame members.

Weld Standard

AWS D1.1 structural steel; ISO 3834-2 quality requirements.

Frame Squareness

±3.0 mm diagonal squareness over full enclosure footprint; ±2.0 mm on section joint interface faces

Anchor Bolt Provisions

M16–M30 anchor bolt holes in base frame;

*Large machinery enclosure lead times are driven by structural frame fabrication, section joint verification, and coating system application, not just sheet metal processing.

Product Description

Frigate manufactures large machinery enclosures as complete structural fabrications — welded S355 steel framework, panel infill, acoustic lining, access doors, maintenance hatches, safety interlock provisions, observation windows, and surface finish all fabricated and verified before dispatch. Enclosures are manufactured in sections sized to your transport envelope and site access constraints, with machined section joint interfaces, alignment dowels, and lifting points at all positions defined by your design package. Section split positions, joint sealing details, and assembly provisions are confirmed in writing before frame fabrication begins.

Lifting Points

Fabricated lifting lugs or trunnions rated for section gross weight with 3:1 safety factor; rated load marked on each lifting point

Section Joint Flatness

±2.0 mm on all section joint interface faces; machined or ground where required to achieve assembly tolerance

Site Joint Sealing

EPDM compression strip or structural silicone sealant at all site assembly joints; sealing specification included in assembly instructions

Standard Panel

2.0–3.0 mm CRCA or galvanised steel sheet; bolted or welded to frame; removable for maintenance access where specified

Ventilation Attenuators

Lined duct inserts at all inlet and exhaust apertures; insertion loss of attenuator confirmed against overall acoustic target

Access Doors

Single and double leaf steel doors; continuous piano hinge or heavy-duty butt hinges rated for door leaf weight; multi-point locking or slam-action latch per access frequency requirement

Safety Interlock Provisions

Switch mounting brackets and cable conduit provisions at all access doors and hatches; interlock type and wiring are your safety system scope; mounting provisions fabricated to your switch interface drawing

Cable & Service Entry

Pre-punched and blank gland zones; robot umbilical entry provisions; pneumatic and hydraulic line penetration sleeves at positions per your services routing drawing

Surface Preparation

Sa 2.5 blast clean per ISO 8501-1 for C4 and C5 systems; Sa 2.0 for C3; zinc phosphate wash primer for standard powder coat

Environmental Compliance

RoHS 3; REACH SVHC <0.1% w/w; WEEE compliant

Technical Advantages

Frigate manufactures large machinery enclosures across six primary types. CNC machining centre enclosures include coolant-resistant internal construction, swarf collection channels, chip conveyor apertures, and observation windows — all referenced to your machine tool mounting interface. Robotic cell enclosures are supplied with personnel access interlock provisions at all entry points, robot umbilical and service entry sleeves, and weld fume extraction apertures.

Industrial press guard enclosures are fabricated with impact-rated panel construction and captured fastener systems per ISO 14120. Acoustic enclosures for pumps, compressors, and turbines are constructed against your insertion loss target — panel mass, lining depth, attenuator sizing, and penetration treatment all derived from your acoustic specification.

Let's Get Started

Need reliable Enclosure for your next project? Get in touch with us today, and we’ll help you find exactly what you need!

Industry Application

CNC Machining Centres

Full enclosures for large CNC turning, milling, and machining centres. Coolant-resistant internal construction; swarf collection channels; chip conveyor apertures; observation windows at operator position; ISO 14120 guard compliance at all access doors.

Robotic Welding & Handling Cells

Multi-section safety enclosures for robotic welding, assembly, and material handling cells. Personnel access interlock provisions at all entry points; robot umbilical and service entry sleeves; weld fume extraction apertures; observation windows at all operator stations.

Industrial Press & Stamping Guards

Structural guard enclosures for large eccentric and hydraulic presses. Impact-rated guard panels with captured fastener system; safety interlock mounting at all access points; ISO 14120 compliance at guard panel structural design level.

Pump & Compressor Acoustic Enclosures

Acoustic enclosures for large reciprocating and centrifugal pump and compressor sets requiring noise attenuation to meet site or regulatory limits. Insertion loss target confirmed by acoustic calculation; ventilation attenuators at all apertures; maintenance access doors positioned for equipment access without enclosure removal.

Turbine & Generator Enclosures

Large acoustic and protective enclosures for gas turbine, steam turbine, and diesel generator sets. Fire-rated panel construction; anti-vibration mounting provisions; exhaust duct penetrations rated for exhaust gas temperature; ventilation system provisions for combustion air and cooling airflow.

Process Machinery Guards

Custom guard enclosures for large process machinery — roll mills, calenders, extrusion lines, and web-handling equipment. Geometry and protection provisions defined entirely by your machinery layout and hazard zone analysis. Manufactured from your safety design drawing.

Frigate Approved Quality Management System

At Frigate, quality is built into every stage of manufacturing. Our approved Quality Management System ensures that every material component.

Incoming Material Checking

Before production begins, all incoming materials are checked against specifications, drawings, and supplier documents.

In-Process Inspection

Quality is monitored during manufacturing to prevent defects and maintain process consistency.

Final Dimensional Checking

Finished parts are inspected before dispatch to confirm compliance with customer drawings and tolerances.

Packaging Control

Finished components are packed safely to prevent damage during handling and transportation.

Incoming Material Checking

In-Process Inspection

Final Dimensional Checking

Packaging Control

Quality Document

To help buyers evaluate our quality systems, we provide sample documents that reflect our inspection and reporting standards.

How We Delivered

Complex geometries engineered solutions that move businesses forward.

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Having Doubts? Our FAQ

Our enclosure is too large for standard transport. How does Frigate determine the section split positions?

Section split positions are determined at DFM review based on your transport envelope constraints, maximum vehicle width, height, and length — and site access limitations such as doorway openings and crane lift positions. Frigate confirms the section split strategy in writing before frame fabrication begins, including the joint interface detail, alignment dowel positions, and site joint sealing specification, so the split positions are structurally and acoustically sound rather than determined by convenience.

We need 25 dB(A) insertion loss for our compressor enclosure. What drives whether that's achievable?

Insertion loss at that level depends on four things simultaneously, panel mass and lining depth, door seal continuity across the full perimeter, attenuator performance at all ventilation apertures, and acoustic treatment of all service penetrations. Achieving 25 dB(A) as a system requires all four to be designed together. Submit your compressor sound power data and the target insertion loss, and Frigate’s acoustic review will return a panel specification, door seal design, and penetration treatment strategy confirmed against your target before fabrication is committed.

Our enclosure design is still being finalised alongside the machinery layout. At what stage should Frigate be engaged?

As early as the machinery layout stage, enclosure section split positions, anchor bolt provisions, and service penetration locations are significantly easier to resolve when the machinery layout is still fluid. Engaging at the concept drawing stage also allows Frigate to flag structural frame requirements that affect the machinery mounting interface before the machine tool supplier finalises their installation specification.

We need the site joint paint system to match the factory-applied coating. How does Frigate handle that?

Joint interface faces are masked during factory coating application so the site joint steel is clean and correctly prepared for field application. Frigate supplies the site joint paint system specification, primer, topcoat product, application method, and DFT targets, matched to the factory coating system, alongside the assembly instructions. The site joint paint system is the same product range as the factory system to ensure appearance and corrosion performance continuity across the assembled enclosure.

We're re-sourcing an existing machinery enclosure design from a previous supplier who had persistent dimensional issues at section joints. What does Frigate need to review?

Send the existing drawing and describe which section joints were causing assembly problems and whether the issue was dimensional misalignment, joint flatness, or dowel position error. Frigate’s review will identify the root cause in the existing design, typically inadequate joint interface flatness specification or absent alignment provisions and confirm what changes to the DFM approach will prevent the same issue. Re-sourcing with a known quality problem is an opportunity to fix the design at the same time, at no additional design cost.

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LOCATIONS

Registered Office

10-A, First Floor, V.V Complex, Prakash Nagar, Thiruverumbur, Trichy-620013, Tamil Nadu, India.

Operations Office

9/1, Poonthottam Nagar, Ramanandha Nagar, Saravanampatti, Coimbatore-641035, Tamil Nadu, India. ㅤ

Other Locations

GENERAL ENQUIRIES

LOCATIONS

Registered Office

10-A, First Floor, V.V Complex, Prakash Nagar, Thiruverumbur, Trichy-620013, Tamil Nadu, India.

Operations Office

9/1, Poonthottam Nagar, Ramanandha Nagar, Saravanampatti, Coimbatore-641035, Tamil Nadu, India. ㅤ

Components Built for Critical Performance

Engineered Products for Critical Applications

Large Machinery Enclosures

Product Description

Lifting Points

Section Joint Flatness

Site Joint Sealing

Standard Panel

Ventilation Attenuators

Access Doors

Safety Interlock Provisions

Cable & Service Entry

Surface Preparation

Environmental Compliance

Technical Advantages

Let's Get Started

Industry Application

Frigate Approved Quality Management System

Quality Document

How We Delivered

Having Doubts? Our FAQ

We'd love to Manufacture for you!

LOCATIONS

Registered Office

Operations Office

Other Locations

GENERAL ENQUIRIES

LOCATIONS

Registered Office

Operations Office

Other Locations

GENERAL ENQUIRIES

Get Your Quote Now

Large Machinery Enclosures

Get Latest Price

Large Machinery Enclosures

Get Latest Price