EQUIPMENT MODEL
NWSS-6S · Six-block double-end polycrystal cropper
TDG NISSIN ↗The NWSS-6S crops six polycrystalline silicon blocks per batch. Diamond multiwire removes the head and tail, and twin rotating tables let operators load fresh stock while the wire is cutting. Its 220–400 mm incoming range and 160–330 mm finished range are shorter than the seven-block NWSS-7S.
This page covers the six-block machine as TDG NISSIN catalogues it. The Chinese text says double-end cropping and the English sheet heading says single end face, so settle the cutting scope and current build when you request a quote.
General illustration of wafer processing equipment, not a photograph of this model. Ask the manufacturer for current photographs and layout drawings of the configuration offered.
START WITH YOUR PRODUCTION TASK
Pick the NWSS-6S when your blocks sit inside its 220–400 mm intake and your target length falls within 160–330 mm. Before ordering, ask TDG NISSIN to confirm in writing both cutting planes, the current build and the finished-length drawing, then run a trial batch that includes table rotation, unloading and waste removal.
SOURCE-LINKED DATA
Published specifications
Values below are published by the manufacturer, each with the date its source was checked. Ask for the figures that apply to your configuration and material in the quotation.
The manufacturer has not published a complete specification table for this entry. Request the exact offered drawing and operating limits.
01 · Manufacturer information
What the NWSS-6S cuts and how long the blocks end up
TDG NISSIN describes the NWSS-6S as a head-and-tail cropper for six polycrystalline blocks up to 400 mm long. While one table holds the batch under the wire, the second table turns out to the operator so the next six blocks can be set up. The parameter sheet lists 156 × 156 × (220–400) mm blocks going in and 160–330 mm blocks coming out.
Those lengths set this model apart from the NWSS-7S, which has its own table. The sheet heading in English reads single end face, while the Chinese heading and description say both ends. Ask TDG NISSIN which planes the wire cuts on your order and to send the finished-length drawing that goes with it.
Sources: TDG NISSIN six-block double-end cropper pageNWSS-6S bilingual parameter sheet
02 · Manufacturer information
NWSS-6S catalogue figures
| Item | Catalogue figure | What to check for your plant |
|---|---|---|
| Batch and block size | Six blocks; 156 × 156 × (220–400) mm | Fixtures must hold your shortest and longest blocks. |
| Finished length | 160–330 mm | Plan your head and tail cut-off against this range. |
| Coated wire | 0.37–0.42 mm; spool up to 7 km at 0.42 mm | Ask separately for kerf width and wire change interval. |
| Wire speed and tension | 0–1000 m/min; 0–120 N | These are machine limits; request a cutting recipe for your blocks. |
| Wheel lift | 430 mm; 0–400 mm/min | Travel and feed range of the wire head. |
| Cooling water | 0.2–0.3 MPa; 70 L/min | Size your cooling and filtration loop to this flow. |
| Compressed air | 0.6–0.7 MPa; up to 16 m³/h | Check your plant air at the machine inlet. |
| Power | AC 380 V, 50 Hz; 34 kW | Installed power; energy per finished block comes from a trial. |
| Footprint and weight | 4500 L × 2450 W × 2750 H mm; 9000 kg | Add room for table rotation and service access. |
Sources: TDG NISSIN six-block double-end cropper pageNWSS-6S bilingual parameter sheet
03 · PVYard procurement analysis
Is the six-block format right for your stock?
Block length first
Match your incoming lengths and target lengths to the NWSS-6S table before comparing batch size. The seven-block machine's longer finished range belongs to that model only. If you crop one end per cycle on a larger batch, the maker's twelve-block single-end cropper is the alternative.
Loading rhythm
Plan trays, unloading and offcut bins around six positions and the two-table swap. Time complete cycles on a trial to see where the line actually waits.
End faces and material loss
Set measurable limits for end-face quality, edge damage and silicon lost per block. Wire diameter alone tells you little about real kerf loss.
Sources: TDG NISSIN six-block double-end cropper pageNWSS-6S bilingual parameter sheet
04 · PVYard procurement analysis
Running a six-position acceptance batch
Agree the cutting scope
Sign off the two end positions, block drawing, fixtures and a corrected description in both languages.
Cut the size extremes
Load short and long blocks from your agreed range and measure finished length and geometry at every one of the six positions.
Time loading and offcut removal
Log the table swap, block setup and disposal of cut ends along with cutting time, counting any blocks that fail.
Prove steady running
Check repeatability and damage across the agreed batches, then have the supplier show a wire break, restart and routine maintenance on your cooling and air supply.
Sources: TDG NISSIN six-block double-end cropper pageNWSS-6S bilingual parameter sheet
05 · PVYard procurement analysis
NWSS-6S questions buyers ask
Can I plan on the NWSS-7S finished length with this machine?
No. The NWSS-6S lists 160–330 mm finished length, and the seven-block model has a separate table.
Do the two rotating tables remove all waiting time?
TDG NISSIN describes loading one table while the other cuts but publishes no full-cycle time. Measure a complete batch on trial, including handling and any rejected blocks.
Does it crop one end or both?
The Chinese description says both ends; the English heading says one. Have TDG NISSIN state the cutting planes in the quotation.
Sources: TDG NISSIN six-block double-end cropper pageNWSS-6S bilingual parameter sheet
TURN THIS INTO A CLEAR REQUEST
Ask about this product
Include the product-specific questions above and replace every bracket with your actual requirement. Save your edited text to your sourcing brief, then review it before submitting an enquiry. Saving a brief does not send it to a manufacturer.
Sources
Manufacturer information and our buying guidance are labelled section by section above. Each source below shows the date it was checked.
TDG NISSIN six-block double-end cropper page ↗
Source check: 2026-10-11 · Chinese product description of the six-block head-and-tail cropping process with two rotating tables.
NWSS-6S bilingual parameter sheet ↗
Source check: 2026-10-11 · Block size, finished length, wire, utilities and footprint for the NWSS-6S; an older catalogue upload, so ask for the current revision.
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