BLT421TS Tube Cutting Head Consumables: Sizes & Buying Guide
WangAlex1. About the BOCHU BLT421TS Cutting Head
The BOCHU BLT421TS is a fiber laser cutting head designed for tube and profile cutting applications. According to BOCHU, the BLT4 T Series supports laser power up to 8 kW, with 200 mm and 250 mm focal-length options and a 1060–1090 nm laser wavelength.
For buyers searching for BLT421TS consumables, BOCHU tube cutting head parts or BLT421TS replacement parts, the most important step is to match each component to the correct head version and installation position.
2. BLT421TS Consumable Sizes
| Consumable | Specification | Buying Notes |
|---|---|---|
| Upper / 2nd-upper /2nd lower protective lens | D25.4×4 mm, where fitted | Confirm the installed optical position and part number |
| Lower protective lens | D34×5 mm; DP.V.P0049AA | Listed for BLT421TS |
| Tube-cutting nozzle | M8 × 0.75 thread | Select the nozzle profile and orifice for your application |
| Ceramic body | DY.C.A0004AA, T-series ceramic body | Confirm the original part number and mounting dimensions |
| Ceramic locking ring | DP.P.T0005AA; M8 × 0.75 | Confirm compatibility with the installed ceramic body |
| Spring seal | SRLC-P385 | Verify the seal position and assembly before ordering |
Important: The official BOCHU catalogue confirms the D34 × 5 mm lower protective lens, M8 × 0.75 ceramic locking ring and SRLC-P385 spring seal compatibility. Confirm the D25.4 × 4 mm lens position and the ceramic body's exact version against your installed assembly before ordering.
3. Recommended Spare Stock for One BLT421TS Machine
These are practical starting quantities, not official BOCHU stocking requirements.
| Consumable | Suggested Stock | Priority |
|---|---|---|
| Commonly used M8 nozzles | 10–20 pcs, mixed sizes | High |
| D34 × 5 mm lower protective lenses | 50–100 pcs | High |
| D25.4 × 4 mm protective lenses, if fitted | 10–50 pcs per required type | High |
| Ceramic bodies | 5 pcs | Medium |
| Ceramic locking rings | 1 pcs | Medium |
| Spring seals | 5 pcs | Medium |
| Focusing or collimating assemblies | 1set per required type | As needed |
For high-volume tube laser cutting, increase stock according to actual consumption and supplier lead time. Distributors may need a wider range of nozzle sizes and additional protective lenses.
4. Buy BLT421TS Consumables Online
Browse our related product categories:
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Fiber Laser Protective Lenses — replacement protective windows.
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Laser Cutting Nozzles — tube-cutting nozzles and other nozzle types.
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Ceramic Rings — ceramic bodies and related components.
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Focus Lenses — replacement focusing optics.
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Collimation Lenses — collimation optics for compatible laser heads.
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Laser Cutting Heads — explore our cutting head range.
Need help identifying a BLT421TS part? Send us the cutting head model, part number or a photo with dimensions before ordering.
5. Contact Us
For BLT421TS laser cutting head consumables, replacement parts and bulk pricing:
WhatsApp / Phone: +86 18766152065
Email: sales@lasernozzles.com
Website: lasernozzles.com
Contact us with your required specifications and quantities for a quotation.