EQUIPMENT MODEL
NWSS-812 · Twelve-block single-end polycrystal cropper
TDG NISSIN ↗A single-end cropper that takes the head or the tail off twelve polycrystalline blocks each cycle, with twin rotating tables so loading goes on during the cut.
The data sheet covers 156 × 156 mm blocks 200–400 mm long, twelve per cut. It gives no time for finishing both ends, no finished-length range and no surface tolerance.
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
The NWSS-812 suits lines that crop one end per cycle in batches of twelve. If you need both ends, agree how blocks are turned and reloaded, and judge the machine on fully finished blocks.
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
Head or tail, twelve blocks at a time
The NWSS-812 uses diamond multiwire to crop twelve polycrystalline blocks at one end per cycle, either the head or the tail. The page and the sheet agree on single-end work. That sets it apart from the six-block NWSS-6S and seven-block NWSS-7S, which TDG NISSIN describes for double-end cropping, though their English headings vary.
While one table is cutting, operators set up the next batch on the second table, so changeovers cost little waiting time. Cropping the second end still means turning and reloading each block, and TDG NISSIN gives no time for that step.
Next to the multi-block NWSS-250 and NWSS-360, this model runs thicker wire, 0.37–0.42 mm, from a much larger 7 km spool, with 0–150 N tension and 600 mm of lift. Its cooling water demand is lower at 70 L/min.
Sources: TDG NISSIN product page: twelve-block single-end cropperNWSS-812 data sheet
02 · Manufacturer information
NWSS-812 figures
| Item | Sheet value | Ask about |
|---|---|---|
| Stock / batch | 156 × 156 × (200–400) mm; twelve per cut | One end per cut. |
| Coated wire / spool | 0.37–0.42 mm; up to 7 km at 0.42 mm | Wire supply and change interval. |
| Wire speed / tension | Up to 1200 m/min; 0–150 N | Finished blocks per hour. |
| Wheel lift | 600 mm; 0–500 mm/min | Fixture and cut-plane drawing. |
| Water | 0.2–0.3 MPa; 70 L/min | Coolant and filter package. |
| Air | 0.6–0.7 MPa; up to 30 m³/h | Conditions at your site. |
| Power | AC 380 V, 50 Hz; 31 kW | Machine draw only. |
| Size / mass | 5260 L × 1880 W × 2850 H mm; 9000 kg | Clearance for tables, loading and service. |
Sources: TDG NISSIN product page: twelve-block single-end cropperNWSS-812 data sheet
03 · PVYard procurement analysis
Planning one-end and two-end work
Which ends you need
Say whether you crop the head, the tail or both, with end allowances and the length you keep. List any sample cuts as separate work.
Turning blocks over
Ask how a block is turned and reloaded for its other end, and how first-end, second-end and rejected blocks stay identifiable.
Judging finished blocks
Measure faces and length once the whole chosen routine is done, recording handling, damage and silicon lost along the way.
Sources: TDG NISSIN product page: twelve-block single-end cropperNWSS-812 data sheet
04 · PVYard procurement analysis
Trial a complete routine
Fix the end scope
Agree the head and tail drawing, stock, fixture and whether one or two passes are planned.
Check the first cut
Measure cut position, face quality and damage at all twelve positions.
Check the second end
If both ends are needed, watch the reorientation and second cut, then measure final length and geometry.
Count good blocks
Time preparation, table rotation, reloading, waste and unloading, and include one fault with a restart.
Sources: TDG NISSIN product page: twelve-block single-end cropperNWSS-812 data sheet
05 · PVYard procurement analysis
Single-end cropping questions
Does one cycle finish both ends of twelve blocks?
No. TDG NISSIN describes the NWSS-812 as a head-or-tail, single-end cropper.
Do the twin tables remove all waiting?
They let loading overlap cutting. No timed result for a complete routine is published, so ask for one that includes any second pass.
Is finished length listed?
The sheet gives incoming length, 200–400 mm, and nothing more. Put your finished length on the drawing you send with the enquiry.
Sources: TDG NISSIN product page: twelve-block single-end cropperNWSS-812 data 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 product page: twelve-block single-end cropper ↗
Source check: 2026-10-11 · Describes head-or-tail cropping and the rotating twin tables.
NWSS-812 data sheet ↗
Source check: 2026-10-11 · Chinese and English sheet for the single-end model; ask whether this issue is still current.
Compare equipment for a related task
These entries are in the same category; check each one's specifications and configuration.