BOCHU BOCI BLT4 Series Auto-Focusing Laser Cutting Heads (8-60KW)
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Product overview
Overview
BOCHU BOCI BLT4 Series Auto-Focusing Laser Cutting Heads (8-60KW)
The BOCHU BOCI BLT4 series covers auto-focusing laser cutting heads for sheet cutting, bevel cutting, tube cutting, and profile cutting applications from 8KW to 60KW.
Model Update Mapping
| Previous model | Current model | Action |
|---|---|---|
| BLT421S | BLT422 | Updated existing 8KW flat/bevel variants |
| BLT421TS | BLT422T | Updated existing 8KW tube/profile variants |
Best For
- Fiber laser cutting machine integration, retrofit, or cutting head replacement projects.
- Buyers comparing BLT4 sheet, bevel, tube, and profile cutting configurations.
- Service teams that need a current model, interface, focal length, accessory, and consumable reference before ordering.
Key Features
- New optical scheme for stable cutting performance.
- Closed-loop automatic focus adjustment.
- Support for intelligent cutting-head retraction.
- Nozzle cooling and sensor water-cooling functions.
- Protective lens monitoring, gas pressure monitoring, internal amplifier, and protective screws depending on selected model.
- Updated protective lens anti-explosion function on applicable newer models.
Compatibility
- For 8KW flat or bevel cutting, use BLT422. For 8KW tube/profile cutting, use BLT422T.
- For bevel cutting, confirm swing-axis hardware, controller support, installation dimensions, and process requirements before ordering.
- QBH, EOC, Q+, QD, and ADD are different optical interface configurations. Choose the interface that matches your laser source and fiber connector.
- Confirm rated laser power, optical connector, focal length, cooling circuit, gas setup, control signal, axis hardware, and consumables before ordering.
- Related reference: Laser Consumables
- Related reference: Protective Lens
- Related reference: Nozzle
- Related reference: Ceramic Body
Specifications
Current BLT4 Selection Table
| Cutting type | Power | Model | Focal length | Interface |
|---|---|---|---|---|
| Flat / Bevel | 8KW | BLT422 | 150, 200 | QBH/EOC |
| Flat / Bevel | 15KW | BLT442 | 200 | Q+/QD/QBH/ADD/EOC |
| Flat / Bevel | 20KW | BLT462 | 200 | Q+/ADD |
| Flat / Bevel | 30KW | BLT482 | 200 | ADD |
| Flat / Bevel | 30KW | BLT482 | 300 | Q+/QD/ADD/QBH |
| Flat / Bevel | 40KW | BLT4102 | 300 | Q+/ADD |
| Flat / Bevel | 60KW | BLT4122 | 300 | Q+/ADD |
| Tube / Profile | 8KW | BLT422T | 150, 200, 250 | QBH/EOC |
| Tube / Profile | 15KW | BLT442T | 200 | QD/ADD |
| Tube / Profile | 15KW | BLT442T | 250 | QD/ADD/QBH |
| Tube / Profile | 15KW | BLT442T | 300 | QD |
| Profile | 15KW | BLT442P | 250 | ADD/QD |
| Profile | 30KW | BLT482P | 250, 300 | Q+/ADD |
| Profile | 40KW | BLT4102P | 300 | Q+/ADD |
8KW and 15KW BLT4 Technical Reference
| Parameter | BLT422 (Flat/Bevel) | BLT442 (Flat/Bevel) | BLT422T (Tube/Profile) | BLT442T (Tube/Profile) |
|---|---|---|---|---|
| Cutter model | BLT422 | BLT442 | BLT422T | BLT442T |
| Power level | ≤8KW | ≤15KW | ≤8KW | ≤15KW |
| Fiber interface | QBH/EOC | Q+/QD/QBH/ADD/EOC | QBH/EOC | QD/ADD/QBH by focal length |
| Focal distance | 150/200mm | 200mm | 150/200/250mm | 200/250/300mm |
| Size | 404 x 122mm class | 404 x 122mm class | 404 x 122mm class | 404 x 122mm class |
| Weight | About 5.5kg | About 5.5kg | About 5.5kg | About 5.5kg |
| Auto focus range | +/-50mm | +/-50mm | +/-50mm | +/-50mm |
| Laser wavelength | 1030-1090nm | 1030-1090nm | 1030-1090nm | 1030-1090nm |
| Max gas pressure | 25bar | 25bar | 25bar | 25bar |
High-Power and Profile Cutting Technical Reference
| Parameter | BLT442P | BLT462 | BLT482 F200 | BLT482 F300 | BLT482P | BLT4102 | BLT4122 |
|---|---|---|---|---|---|---|---|
| Laser wavelength | 1030-1090nm | ||||||
| Laser power | ≤15KW | ≤20KW | ≤30KW | ≤30KW | ≤30KW | ≤40KW | ≤60KW |
| Fiber interface | ADD/QD | Q+/ADD | ADD | Q+/QD/ADD/QBH | Q+/ADD | Q+/ADD | Q+/ADD |
| Focal distance | 250mm | 200mm | 200mm | 300mm | 250/300mm | 300mm | 300mm |
| Spot magnification | M=2.0 | M=2.0 | M=2.0 | M=3.0 | M=2.5/3.0 | M=3.0 | M=3.0 |
| Max focus adjustment range | +/-50mm | ||||||
| NA | Max. 0.13 at Fc100 | ||||||
| Centering adjustment range | +/-1.5mm | ||||||
| Focus acceleration | 7.5m/s2 | ||||||
| Cutting gas interface | Diameter 10mm, max 25bar (2.5MPa) | ||||||
| Nozzle cooling gas connection | Diameter 6mm, max 5bar (0.5MPa) | ||||||
| Water cooling interface | Diameter 8mm, max 5bar (0.5MPa), min flow 2.0L/min | ||||||
| Operating temperature | 5-55 C | ||||||
| Storage temperature | -25 to +55 C | ||||||
| Dimension, Q+ version | 497.6 x 122mm | 448 x 122mm | 448 x 122mm | 448 x 122mm | 497.6 x 122mm | 524 x 122mm | 524 x 122mm |
| Weight | 6.5kg | 6.1kg | 6.1kg | 7kg | 6.5/6.8kg | 7kg | 7kg |
Feature Reference
| Feature | Description |
|---|---|
| Spring energized seal test | Designed to improve sealing reliability in demanding cutting conditions. |
| Protective lens monitor | Supports monitoring of protective lens status on applicable models. |
| Gas pressure monitor | Supports cutting gas pressure monitoring for process stability. |
| Internal amplifier | Integrated sensing/control support depending on selected configuration. |
| Nozzle cooling | Supports nozzle cooling gas connection on applicable models. |
| Water cooling sensor | Supports water-cooling circuit monitoring on applicable models. |
| Protective screws | Anti-collision/protective screw components are selected by model. |
| Protective lens anti-explosion function | Added on newer applicable models to improve safety and service life. |
AB Axis Accessory Reference
| Change item | Before | After |
|---|---|---|
| Material name | AB Symmetric Swing Axis Advanced 1.0 | AB Symmetric Swing Axis Advanced 2.0 |
| Model | ABS-BLT | ABRMS2.0-H00 |
| Surface process | Oxidation | Added wear-resistant and corrosion-resistant process |
| Swing angle | A-axis: +/-55 degrees; B-axis: +/-105 degrees | A-axis: +/-55 degrees; B-axis: +/-100 degrees |
| Cutting performance test data | 0.3G / 3Hz / 25m | 0.6G / 4Hz / 25m |
| A/B axis reduction ratio | 1:81 / 1:81 | 1:80 / 1:100 |
| Compatible drive | VEICHI | S9 |
| Related system | FSG9200 series combined products | |
Downloads
Before Ordering
Product images are for reference only. Confirm model, cutting type, power level, focal length, fiber interface, controller compatibility, cooling, gas circuit, axis hardware, and consumables before ordering.
For bevel cutting applications, confirm whether the AB swing-axis hardware should be ordered together with the cutting head. Unless a specific focal length is selected or specially requested, cutting heads may be shipped according to the lowest available focal ratio for the selected model.
FAQ
What replaced BLT421S and BLT421TS?
According to BOCHU's 2026 product change notice, BLT421S is updated to BLT422, and BLT421TS is updated to BLT422T.
Which BLT4 model should I choose for 8KW cutting?
For 8KW flat or bevel cutting, use BLT422. For 8KW tube/profile cutting, use BLT422T. Select the focal length and fiber interface listed for your machine configuration.
Can BLT4 heads be used for bevel cutting?
Flat/bevel models can support bevel cutting when paired with the correct swing-axis hardware and machine configuration. Confirm axis set compatibility, controller support, installation dimensions, and process requirements before ordering.
What changed for the AB axis swing set?
The AB Symmetric Swing Axis Advanced 1.0 / ABS-BLT is listed as changing to AB Symmetric Swing Axis Advanced 2.0 / ABRMS2.0-H00. The new version changes surface process, B-axis angle, cutting performance test data, reduction ratio, drive compatibility, wiring, and mounting dimensions.
Why are there multiple interfaces for the same model?
QBH, EOC, Q+, QD, and ADD are different optical interface configurations. Choose the interface that matches your laser source and fiber connector. If replacing an existing head, confirm the current connector before ordering.
Are all BLT4 variants priced the same across interfaces?
No. Interface, focal length, and model configuration may affect price. Confirm final price and lead time before ordering, especially for newly added model combinations.
5.5 kg
Shipping Information
Shipping Time and Costs
- Delivery Timeframe: 5-10 business days.
- Machines: Fees calculated at checkout or via email at info@sflaser.net.
- Accessories: Fees calculated at checkout or via email.
- Consumables: Shipped free of charge.
IMPORTANT NOTICE: Free shipping is exclusive to laser consumables. For discrepancies at checkout, contact us for actual shipping costs.
Tariff Policy
- Offline Payments: Tariffs based on trade terms. Export duties are covered by us under FOB, CFR, or CIF terms; import duties by the customer. For DDP, all duties are covered by us.
- Online Payments: Export duties are covered by us; import duties by the customer. Check "Tariff Rate" on our website for specifics.
Order Tracking
- Confirmation: Receive an email upon successful order placement.
- Shipping Notification: Includes order number, courier, and tracking number. Track your order via email for updates, modifications, and shipping details.
Important Notes
Delivery Address
- Confirm your address before finalizing your order. To change it, email info@sflaser.net within 48 hours of purchase.
Damage and Returns
- For transit damage due to force majeure, contact support@sflaser.net immediately upon receipt.
- To cancel an order, contact us rather than refusing the package to avoid risks of loss or damage.
Non-receipt and Package Damage
- If not received within 7 days past the delivery date, email support@sflaser.net. We are not liable for delays not reported within this timeframe.
- Report any package or product damage on the day of receipt with photos/videos to support@sflaser.net for assistance.
Technical Support After Purchase
- For technical support, take detailed inventory and photos of unpacked items and contact support@sflaser.net promptly. We provide support via email or online contact.
1. Overview
We strive for your satisfaction with every order. Understanding that returns may sometimes be necessary, we offer a refund in USD, provided the goods meet our policy requirements.
2. How to Return
Before Delivery
- Email: Send a request to info@sflaser.net to cancel and refund your order.
- Note: Avoid initiating a bank refund to prevent fees and delays. Any bank fees incurred will be deducted from your refund.
After Delivery
- Email: Contact info@sflaser.net for return assistance.
- Conditions: Adhere to our return conditions. Be prepared for a service fee and transportation costs.
3. Return/Refund Conditions
Returns within 15 days of delivery are accepted under the following conditions, along with the original receipt and a refund service fee:
- Not Packed, Not Shipped: 4.4% service fee for machines, accessories, and consumables.
- Packaged, Not Shipped: 10% for machines; 20% for accessories and consumables.
- Shipped, Unopened: 20% for machines; 25% for accessories and consumables.
- Opened, Unused: 30% for machines; 50% for accessories and consumables.
- Opened, Used: 50% for machines; 80% for accessories and consumables.
Important: Service fees apply due to instant fund deductions by payment platforms. Bank charges, taxes, and shipping expenses are deducted from refunds. No exchanges. Items must return in pristine condition, with machinery/components having no more than 3 uses. Stand-alone consumables are non-returnable. For laser service products, our company does not accept refunds.
4. Refund Processing Time
- Packing Details: Include a packing list, order number, and customer name in your return package.
- Tracking: If returning the order yourself, email the tracking number to support@sflaser.net.
- Timeline: Refunds typically processed in 10-15 business days post-return inspection. Confirmation emails will be sent, followed by bank processing.
5. Disclaimer
- Approval: Only approved returns are accepted.
- Rights: Sky Fire Laser reserves the right to refuse returns not meeting policy requirements.
- Shipping: Returns must be sent to the address provided in your return confirmation. No on-site returns.
6. Questions?
For any inquiries, email us at info@sflaser.net.
1 year
If you choose CIF shipping, you will need to pay customs duties yourself.
If you choose DDP shipping, we can help handle customs clearance for you.
Please contact us by email for further details.
Most of our packages are currently shipped from Wuhan, China.
For customers in the United States, certain products such as laser welding machines will be shipped directly from our U.S. warehouse. More products will be gradually added to the U.S. warehouse inventory.
The standard shipping cycle is normally 3–7 business days for order processing and dispatch when purchasing a single unit.
For bulk orders involving a larger quantity of items, the processing time may be extended accordingly. We will inform you of the estimated dispatch schedule once the order details are confirmed.
- International Shipping: Please be aware that for orders shipped internationally, any customs fees incurred will be the responsibility of the customer. These fees are not covered by our shipping charges.
- Refund Processing Fee: For orders that have not been packed or shipped, a refund processing fee will apply. This fee is due to the immediate deduction of funds by payment platforms such as PayPal, Visa, etc., and will be calculated as a percentage of the total order cost.
