Enclosed Exchange-table Fiber Laser Cutting Machine

STR BD · Enclosed sheet cutting with table exchange

STR BD: plan cutting and sheet handling together

The STR BD is an enclosed exchange-table fiber laser cutting machine for sheet metal fabrication. Review the cutting enclosure, table arrangement and loading access as one production system, with a laser package selected around your materials and parts.

STR BD enclosed exchange-table fiber laser cutting machine

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STR BD catalog images. Machine appearance and supplied equipment follow the agreed configuration.

STR BD Enclosed Exchange-table Laser Cutter

An enclosed cutting zone. A planned loading cycle.

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Brand: LSENTR / STR
Product range: STR BD
Manufacturer: Jinan STR Equipment Co., Ltd.
Machine layout: Enclosed cutting area with exchange tables
Process: CNC fiber laser cutting of metal sheets
Working area: Confirm for your sheet dimensions
Laser package: Configured around your application

Specify the whole production setup

Share your materials, sheet dimensions, loading method and workload. Review the machine, extraction, utilities and delivery scope together.

Evaluate enclosure, access and protective configuration together
Coordinate cutting, table exchange and outside handling
Confirm output with representative parts and an agreed cycle

How an exchange-table layout fits your production

In an exchange-table layout, a cutting table works inside the enclosure while another table is available outside for handling. This creates the opportunity to prepare the next sheet while the current sheet is being processed, subject to the machine's operating and safety sequence.

Consider the complete sheet cycle

Nesting and cutting time are only part of the job. Account for sheet lifting, positioning, part collection, skeleton removal and table exchange.

Plan access around real workpieces

Check the weight of your sheets, the lifting method and the space needed for people and handling equipment around the external table.

Evaluate the installed system

The enclosure, doors, viewing arrangements, interlocks and extraction must be reviewed for the proposed configuration and destination.

The exchange-table work sequence

Cut inside the enclosure
The CNC system processes the sheet under the approved operating procedure.
Prepare the outside table
Collect parts, remove the skeleton and load the next sheet when permitted.
Complete the exchange
Follow the machine's access checks and exchange sequence.
Continue with the next sheet
Record the full cycle, including handling and exchange, when comparing output.

A second table does not automatically double production. The benefit depends on the balance between cutting and handling time.

How enclosed fiber laser sheet cutting works

Reference view of a laser cutting head processing a metal sheet — STR process-library reference. This image illustrates sheet cutting; it is not a recorded BD trial or a BD component specification.

Drawing, beam, motion and assist gas

The cutting program converts part geometry into a sequence of pierces and contours. A focused laser heats a local region of the sheet while assist gas helps remove molten material through the cut.

The enclosure defines the working environment; the exchange tables organize sheet flow. Neither feature substitutes for a suitable source, cutting head, process settings or material condition.

A nest containing many holes can spend substantial time piercing and changing direction. A long outline places a different demand on contour motion. Use both when reviewing a machine for mixed production.

Power, axis speed and finished-part output are different measures

Rated laser power describes the source. Axis travel speed describes motion under stated conditions. Saleable output also depends on piercing, contour geometry, edge quality, material handling and rejected parts. Compare representative nests with the same acceptance requirements rather than selecting from one maximum figure.

When does an exchange table improve the sheet cycle?

An exchange table reduces avoidable waiting when external clearing and loading can overlap the cutting operation. If outside handling takes longer than cutting, the machine still waits for a prepared table. This is why loading access, part sorting and the next-sheet supply belong in a laser-cutter evaluation.

A simple cycle model

Sequential loading: Cutting + outside handling + other non-overlapping work
Overlapped exchange-table cycle: Longer of cutting or outside handling + exchange + other non-overlapping work

Simplified steady-state illustration with full permitted overlap, one sheet per cycle and comparable work content. It excludes start/end effects, stops, maintenance, material changes and rejects. Actual operating sequences may overlap less.

Hypothetical examples — minutes per sheet, not STR BD test results
Assumed job	Cutting	Outside handling	Exchange	Other work	Sequential total	Overlapped total
Longer cutting cycle	12	7	1	2	12 + 7 + 2 = 21	max(12, 7) + 1 + 2 = 15
Handling-led cycle	4	10	1	2	4 + 10 + 2 = 16	max(4, 10) + 1 + 2 = 13

In the second example, reducing the cutting time alone does not reduce the 10-minute handling bottleneck. Improving sheet supply, skeleton removal or sorting may matter more. To apply the model, measure your own cutting and outside-handling sequence and identify work that cannot overlap.

Industry context: Bystronic on material-handling bottlenecks. The arithmetic above is an illustrative planning model, not the supplier's or STR's measured performance.

STR BD technical configuration

Use these configuration points to prepare a comparable proposal. Numeric specifications and component models should be confirmed for the exact BD machine offered.

Configuration to confirm in your STR BD proposal
Product range	STR BD enclosed exchange-table fiber laser cutter
Machine arrangement	Enclosed cutting zone with an external table-handling area
Effective working area	Confirm usable travel and accepted sheet size for the quoted model
Laser source & power	Confirm source model and rated power around material, thickness and quality requirements
Cutting head & control	Confirm the head, CNC system and functions included in the quotation
Motion & accuracy	Request axis specifications, measurement conditions and an agreed part inspection method
Exchange & table load	Confirm exchange sequence, table capacity and permitted sheet loading
Extraction & cooling	Confirm extraction design, filter scope and matched cooling equipment
Utilities & footprint	Request the machine layout, access clearances, electrical and gas requirements
Delivery & documentation	Confirm included accessories, model-specific documents, installation and support scope

The final specification should identify the exact model, effective working area, rated power, component models and measurement conditions. A configuration reference is not a finished-part quality guarantee.

Have a sheet size or configuration in mind?Prepare your BD requirements

Enclosure, tables and cutting system

STR BD enclosure and external exchange-table arrangement

Review the machine as one connected layout

The BD catalog view shows the enclosure and external table arrangement. Check the final general arrangement drawing before planning material access, lifting routes and operator positions.

Enclosure & access

Confirm door locations, viewing arrangements, access controls and the installed protective package. An enclosure image alone does not establish a laser safety classification or destination compliance.

Exchange tables & support bed

Review usable table area, load capacity, slat arrangement and how the skeleton is removed. Confirm that your lifting method can reach the outside table.

Laser source and cutting head

The source supplies optical power; the head delivers the beam, manages focusing and directs assist gas at the sheet. Compatibility, supported materials and the intended process must be evaluated together. The offered BOM identifies the actual source, head and supported functions.

Extraction & cooling

An enclosed cutting zone still needs a defined extraction path and supporting equipment. Chiller capacity, service access, duct routing and filter scope must fit the complete proposed system; the cover alone does not establish installed fume control.

Beam, bed and motion system

The moving structure, guides and drive system position the cutting head relative to the supported sheet. Review structural and motion specifications with their test conditions. The quoted beam construction, drive components and maintenance requirements define the equipment included in your production setup.

CNC, nesting and operator workflow

Nesting affects sheet utilization and part removal; the CNC executes the approved path and sequence. Check which software functions, licenses, file interfaces and operator tools are included, and which require a separately quoted option.

Product photographs illustrate the BD range. Final dimensions, internal components and supplied accessories follow the approved machine specification and quotation.

Materials, thickness and the result you need

A useful material list describes more than metal names. Grade, surface condition, usual thickness, part geometry and the next process determine whether a proposed cutting package is suitable. The rows below are application-review topics, not a published BD capability matrix.

Material discussion	What changes the cutting task?	What should the sample resolve?
Carbon / mild steel	Grade, surface scale, routine thickness and the chosen assist-gas process.	Edge condition, dross, hole quality and preparation before painting or welding.
Stainless steel	Alloy, surface finish, cosmetic face and required edge condition.	Discoloration, burrs and whether downstream finishing meets the part specification.
Aluminum	Alloy, sheet condition, thickness and suitability of the proposed source/head package.	Edge finish, hole geometry, flatness and the actual part tolerance.
Coated / galvanized sheet	Coating identity and thickness, surface condition and approved extraction arrangements.	Coating damage, edge condition and the requirements of later finishing.
Other or highly reflective metals	Material-specific compatibility and restrictions of the offered laser system.	Application approval and a sample under the exact proposed setup before committing.

Routine thickness matters as much as occasional maximum thickness

A workshop cutting mostly recurring thinner-sheet nests has a different production task from one centered on frequent thicker plate. Describe both the everyday workload and the occasional extreme. A maximum-thickness headline does not establish the speed, hole quality or economics of your recurring parts.

Sheet metal work starts with the actual part

For carbon steel, stainless steel, aluminum or another metal, provide the exact grade and required thickness range. STR should confirm material compatibility and cutting conditions for the proposed source and head package.

Panels & enclosure blanks

Send the sheet dimensions, nesting files and downstream bending requirements. Evaluate the balance between cutting time, unloading and sheet replacement.

Brackets & nested components

Identify critical holes, narrow features, dimensional tolerances and part quantities. Small-part collection may influence the handling cycle.

Mixed fabrication orders

High-mix work adds material changes, setup and sorting to the sheet cycle. If runs are short, evaluate the changeover burden instead of treating table exchange as the sole productivity measure.

Parts for bending and welding

Evaluate cut edges, bend-critical dimensions and weld preparation against the next process. Compare STR press brake equipment or laser welding equipment when planning the wider fabrication route.

Agree what a useful cutting test must show

Use a representative drawing and record material grade, thickness, laser configuration, assist gas and acceptance criteria. Inspect edges, holes and dimensions, then record the cycle boundary: cutting only or the complete loaded-sheet cycle.

Discuss a BD cutting test

Cutting samples and measurable acceptance

STR gallery reference showing square metal plates with circular holes and visible cut edges — Hole position, edge condition and visible striations

STR gallery reference showing ring-shaped metal parts with outer tabs — Inner contours, outside profiles and part consistency

These are existing STR sheet-cutting gallery images. They illustrate part forms and inspection questions, not a BD sample report, material certificate or thickness capability.

Edges that suit the next operation

Define acceptable burr or dross, edge discoloration and any later deburring, coating or welding requirement. A visually bright edge is not a substitute for the application's acceptance criteria.

Holes and fine features

Include the smallest relevant hole, narrow slots and closely spaced features in the drawing. Judge their geometry and position on the actual material rather than relying on a nominal machine accuracy alone.

Dimensions and flatness

Specify datums, critical dimensions and inspection conditions. Distinguish axis positioning specifications from the finished-part tolerance you need after cutting and cooling.

Repeatability through the nest

Inspect more than one selected good part. Identify which positions and repeated parts should be compared so the review does not overlook variation across the sheet or job.

A useful sample record
Job identity	Drawing revision, units, material grade, sheet thickness and surface condition
Machine and process	Quoted model, source power, head, assist gas and recorded process conditions
Quality agreement	Critical dimensions, inspection method, edge/hole criteria and accepted downstream work
Production boundary	Good parts per nest, rejects and whether timing includes loading, clearing and table exchange
Traceable result	Labeled parts, photographs, measurement record and any required follow-up test

Oxygen, nitrogen or compressed air?

Assist gas affects how material leaves the kerf and what happens to the cut edge. Select the process around the material and downstream quality requirement; a lower gas cost is not automatically a lower finished-part cost.

Gas approach	Process distinction	Procurement implication
Oxygen	In reactive cutting, oxygen contributes heat through oxidation of the metal.	Evaluate the resulting edge and whether the part needs further preparation before its next operation.
Nitrogen	In fusion cutting, the laser supplies cutting energy while nitrogen ejects melt and limits interaction with surrounding air.	Review the required edge finish, gas supply and process capability as one package.
Compressed air	An option on compatible systems; its process and edge result differ from pure-nitrogen cutting.	First establish that the offered BD package supports it, then compare sample quality and the complete air-supply cost.

There is no universal gas pressure, purity, nozzle or focus setting for every sheet. Use the approved process documentation for the supplied configuration. Compare the cost per accepted part, including any extra finishing or rejection, rather than gas purchase price alone.

General process references: TRUMPF's reactive cutting, fusion cutting and compressed-air option documentation. These explain processes on the source systems; they do not establish BD options or settings.

What can change cut quality during a job?

A quality change is an observation, not a diagnosis. Compare material, program, approved consumables and process records before attributing every defect to machine motion or increasing laser power.

Observation	Useful evidence to collect	Decision it supports
Burrs or dross	Material/thickness, the affected contour, gas supply record and consumable condition.	Whether the approved process needs review, or the part requires planned finishing.
Poor small holes	Hole geometry, drawing revision, lead-in/piercing strategy and repeated sample measurements.	Whether the feature and process are compatible with the required finished tolerance.
Variation across a nest	Part position, sheet condition, support condition and inspection after cooling.	Which variables should be isolated in a repeat trial.
Quality changes after extended running	Time sequence, alarms, optics/consumable service records and supporting-equipment status.	What evidence to provide to the machine's qualified service team.

Follow the supplied operating and service instructions. This review table is not a set of machine adjustment values or a replacement for fault diagnosis.

Choose the layout around your workload

An enclosed exchange-table machine is a production-layout decision as well as a laser-power decision. Start with the constraints that govern your actual sheet work.

Define routine work. Record material grade, normal and maximum thickness, sheet dimensions, part features and daily demand.
Describe material handling. Specify sheet weight, lifting equipment, unloading method and where finished parts and skeletons will go.
Balance the cycle. Compare the time to cut a nest with the time to clear and reload the external table. Include the exchange sequence.
Match the installed configuration. Review power, head, source, extraction, cooling and utilities against those requirements.
Compare the agreed scope. Use the same sample, acceptance conditions, installation requirements and delivery terms across proposals.

Single-platform, exchange-table or compact enclosed?

Layout	Handling approach	Main decision to review
A single-platform	Loading, cutting and collection use the same worktable.	Open access, between-cycle handling and the required protective arrangements.
BD enclosed exchange-table	Inside cutting and outside handling use an exchange-table arrangement.	Cycle balance, loading access, enclosure package and full installation area.
D compact enclosed	A distinct compact-machine selection for smaller workpieces.	Actual workpiece size, fixtures and the specific D configuration.

Prepare drawings for a useful BD cutting review

Send geometry that represents the parts you intend to produce, together with a readable drawing of the acceptance requirements. The machine program and the part inspection drawing solve different tasks.

Geometry and units

State the drawing revision, units and scale. Identify duplicate lines, open contours and features that are intentionally left connected. Agree file formats and software import requirements with STR rather than assuming every CAD file is supported.

Material and finished part

List the grade, thickness and surface condition for each part. Identify the cosmetic face, critical holes, datums, tolerances and any coating, bending or welding that follows cutting.

Quantities and nesting

Provide part quantities, normal batch sizes and available sheet sizes. Explain whether the trial should use your production nest or an agreed representative layout.

Handling and traceability

Describe part separation, sorting and labeling. If small parts or a complex skeleton are slow to remove, include that work in the cycle discussion.

Consumables and exchange-table maintenance planning

The enclosure does not eliminate maintenance. Access, correct part identification and the service requirements of both worktables belong in the purchase decision. Use the supplied component manuals to set intervals and procedures.

Protective windows

Match dimensions, coating and part number to the supplied head. Follow its contamination checks and handling procedure; a visually similar optical window may not be compatible.

Reference ceramic rings and threaded mounts for a laser cutting head

Nozzles and ceramic mounts

Keep an identified set of approved nozzle and mount parts. Use the head model and approved part identifiers when ordering replacements.

Reference serrated support slats being measured with a caliper

Table support slats

Include both tables in support-bed inspection and cleaning plans. Slat condition affects how sheets and small parts are supported; use the specified replacement and access procedure.

Reference images from the STR parts library. They identify consumable categories only; the supplied BD bill of materials defines compatible parts. Photograph labels and dimensions are not adopted as BD specifications.

System	What to include in the maintenance plan	Information to obtain
Exchange-table mechanism	Approved access, cleanliness, lubrication and checks for the supplied exchange arrangement.	Operating sequence, access/isolation instructions and service schedule.
Enclosure and access controls	Inspection of doors, viewing components and protective functions by the specified procedure.	Installed protective configuration and authorized service scope.
Extraction and filtration	Filter/service monitoring, duct access and material-specific waste handling.	Filter types, service indicators and consumable identifiers.
Cooling and utilities	Chiller, gas/air preparation and supply checks specified by their manufacturers.	Fluid specifications, environmental limits and maintenance instructions.

Plan the spare-parts handover

Request a component list with identifiers, included starter spares, replacement procurement paths and the agreed support contact. Keep a record of the machine configuration and any approved substitutions so a later spare-parts order refers to the equipment actually supplied.

Plan the workshop before the machine arrives

Full layout & lifting routes

Request the general arrangement drawing including the outside table, enclosure doors, service clearances and auxiliary equipment. Check unloading access, floor conditions and sheet transport.

Electrical supply & cooling

Confirm voltage, phases, frequency, connected load, grounding and the chiller package for the quoted configuration. Use the supplier's installation documentation.

Assist gas & extraction

Review gas type, purity, pressure and available supply with the cutting process. Plan ducting, filtration and waste handling around the installed system.

Operation & documentation

Agree the operating instructions, training scope and model-specific documents for your destination. Review access procedures and protective arrangements before operation.

Keep service access in the plan

Allow access to slats, optics, nozzles, lubrication points and extraction equipment as specified in the machine documentation. Confirm spare-part identifiers and maintenance intervals for the supplied components.

What belongs in a comparable BD quotation?

Machine configuration: Working area, source and power, head, CNC functions, exchange-table arrangement and protective package.
Supporting equipment: Cooling, extraction, gas preparation, handling equipment and any installation supplies included in the scope.
Delivery & commissioning: Packaging, freight boundary, destination arrangements, installation, training and acceptance conditions.
Service & consumables: Warranty terms, exclusions, spare parts and support arrangements applicable to the offered machine and country.

A headline machine price is not the installed project cost. Ask for a clear inclusion list and separately priced options.

From configuration proposal to machine acceptance

A clear acceptance plan connects the quotation to the parts and workflow you expect. Agree its scope before ordering; this table is a proposed procurement sequence, not a claim about a test or service already supplied by STR.

Stage	Decision to close	Useful record
Application and proposal	Which BD configuration meets the material, sheet, handling and quality task?	Requirements sheet, quoted model/BOM, scope and exclusions.
Representative trial	Can the agreed parts meet quality and cycle requirements under the proposed conditions?	Drawing revision, material record, labeled samples, measurements and timing boundary.
Layout and installation readiness	Can the site receive, position, supply and operate the complete system?	General arrangement, utility requirements, lifting/access plan and responsibility list.
Pre-shipment review	Does the supplied configuration match the purchase agreement?	Configuration check, agreed inspection record, packing list and destination documents.
Site handover	Are the agreed installation, operator handover and acceptance items complete?	Recorded results, open-item list, manuals, parts identifiers and applicable service terms.

Make the next discussion specific to your production

Bring one representative nest, its material and quality requirements, and a description of sheet loading and part collection. This gives STR a clearer basis for reviewing the configuration and the complete production cycle.

Prepare my BD application summary

STR BD questions

What does an exchange table change?

It separates the inside cutting position from an outside handling position. This can allow permitted sheet preparation alongside cutting. The resulting output depends on loading, unloading, nesting and exchange time.

Does an enclosed machine remove all site safety requirements?

No. The actual protective configuration, access procedure, extraction, operating instructions and destination requirements must be assessed for the installed system.

Which power and working area should I choose?

Start with material grade, routine and maximum thickness, sheet dimensions, part quality and workload. Request a BD-specific proposal and representative cutting test rather than borrowing another model's parameters.

Is a BD machine the same as the D series?

No. BD is the enclosed exchange-table range discussed here. D is a separate compact enclosed selection. Compare the actual work area, fixtures, handling process and offered configuration.

What should I send for a quotation?

Send your country, materials, thickness range, sheet sizes, representative drawings, quantities, loading method, sheet weight, workshop utilities and delivery requirements.

How should I compare production speed?

Use the same drawing, material and quality requirements. State whether the measurement covers cutting alone or loading, cutting, unloading and exchange. Axis travel speed alone does not define finished-part output.

Is an exchange table the same as automatic loading?

No. Table exchange changes the cutting and handling positions. A sheet-loading, unloading or sorting system is an additional function with its own scope. A BD quotation must state what handling equipment is actually included.

Can a fully enclosed laser cutter run unattended?

An enclosure alone does not establish unattended-operation capability. Review the installed automation, process monitoring, operating instructions and permitted staffing arrangements for the complete system.

Can the BD cut aluminum or other reflective metals?

That requires material-specific approval for the proposed source, cutting head and process. Send the alloy, thickness and drawing; a general fiber-laser material list is not a BD configuration approval.

Does nitrogen remove the need for all finishing?

Nitrogen fusion cutting is used to limit oxidation at the cut edge. The finished part still has to meet its requirements for burrs, dimensions, cosmetic condition, coating or welding.

Why might a faster cutting program not improve daily output?

The outside table may still be occupied by sorting, skeleton removal or next-sheet loading. Measure the complete sheet cycle and compare the cutting time with the outside-handling time.

Are the gallery samples BD test results?

The two machine images depict the BD range. The separately labeled process, sample and consumable references come from STR's general library and do not prove a BD material range, thickness or supplied component.

Let's configure your
STR BD laser cutter.

Start with the metal parts you need to make. Add your sheet size, thickness and workload so the discussion starts with your production requirements.

Jinan STR Equipment Co., Ltd.admin@strmachine.com +86 156 9240 8097No. 136 ChouFu Road, Licheng District,
Jinan City, Shandong, China

Prepare and review your requirements summary, then send it through the STR contact page or email.

Specifications Request a configuration