High-Precision Slitting Round Blade/Disc Knife from China Suppliers for Steel and Metal Processing Factory
Product Introduction
Thickness Tolerance
± 0.0005 mm guaranteed precision
Inner Circle Tolerance
Achieves up to H3 grade
Quality Testing
All high-precision products tested in constant temperature room
Surface Roughness
Ra 0.1μ as routine standard
With the continuous improvement of machining precision, we have developed ultra-high precision cutting tools — achieving ± 0.001mm thickness tolerance and Ra 0.1μ surface roughness as our routine standards. We also meet customers' higher tolerances for thickness, parallelism, flatness, outer and inner rings.
We can now guarantee that the thickness tolerance of ±0.0005mm. For a certain inner circle, the tolerance can reach H3. All high-precision products are tested in a constant temperature room. With the continuous improvement of machining precision of sheet metal, we have developed ultra-high precision cutting tools, whose accuracy has so far been matched by precision milling tools. ±0.001mm thickness tolerance, and Ra 0.1μ surface roughness are our routine standards. Using our know-how, we also meet our customers' higher tolerances for thickness, parallelism, flatness, outer and inner rings.
We can also attach a rubber sleeve to the outer diameter according to the customer's request, so that it can be exported smoothly with the knife to prevent scratches. Available rubber sleeve materials include:
| Component | Material / Grade | IRHD Hardness |
|---|---|---|
| Rubber Sleeve | Green Amine / Acrylonitrile Butadiene Rubber (NBR) | 78 ~ 75 IRHD |
| Polyurethane Isolation Ring | Polyurethane | 80 ~ 85 IRHD |
| Blade Sleeve | S45C (common) / S50C / 65Mn | 47 ± 2 HRC |
| Aluminum Spacer | AL7075 | — |
Blade Sleeve Thickness
0.9 mm ~ 100 mm range available
Tolerance Control
Within 0.003 mm/mt for both blade sleeves and aluminum spacers
Manufacturing Process
Forging → Machining → Heat Treatment → Leveling Grinding
The blade bushing is designed to maintain a precise width between the dividing round knife, the upper knife and the lower knife, enabling accurate horizontal gap adjustment. In order to reduce overall weight, aluminum spacers using AL7075 are also available, with the same strict thickness tolerance controlled within 0.003 mm/mt.