CDW Single Use Cops
CDW (Cold Drawn Welded) Single Use Cops are a higher-grade variant designed for Draw
Twisting Machines and Splitting Yarn Machines for Polyester and Nylon yarn. Compared to ERW
cops, the CDW type is slightly costlier but offers extended usability — they can be used for
2 or a maximum of 3 cycles, making them suitable for customers seeking longer lifecycle
performance while retaining cost efficiency over multi-use cops. These cops provide
exceptional run-out control, reducing vibration and thereby lowering spindle and bolster
maintenance requirements. Their consistent weight and superior stability help minimize
oil-change frequencies. Manufactured as cylindrical tubes with a triangular driving surface,
CDW cops follow ISO 1472 standards and are produced with strict dimensional tolerances to
ensure precision and reliability across multiple cycles.
Range of Steel Cops for Draw Twisting Machine
| Diameter | Thickness | Length | Remarks |
|---|---|---|---|
| 45.15 to 51.30 mm | 0.70 to 0.80 mm for Steel Cops | 305 to 450 mm | Other Dimensions are As Per ISO 1472 Standard Specification |
*Single Use Cops have 2 different variety. CDW Single Use Cops & ERW Single Use Cops.
Cylindrical Tubes with Triangular Driving Surface
Tolerance on mass for 1000 Complete Cops is
Nos. 1 to 7: +/- 1.0%
Nos. 8: +/- 1.5%
| Symbol | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | Tolerance |
|---|---|---|---|---|---|---|---|---|---|
| L | 305 | 340 | 360 | 380 | 400 | 420 | 450 | 495 | + 1 |
| 0 | |||||||||
| L1 | 225 | 225 | 272 | 272 | 272 | 272 | 272 | 272 | + 1 |
| 0 | |||||||||
| D | 46 | 46 | 46 | 46 | 46 | 46 | 46 | 75 | - |
| 51 | 51 | 51 | 51 | 51 | 51 | 51 | 81 | - | |
| e | 38.8 | 38.8 | 38.8 | 38.8 | 38.8 | 38.8 | 38.8 | 38.8 | + 0.25 |
| 0 | |||||||||
| e1 | 41.2 | 41.2 | 41.2 | 41.2 | 41.2 | 41.2 | 41.2 | 41.2 | +0.2 |
| 0 | |||||||||
| d | 31 | 31 | 31 | 31 | 31 | 31 | 31 | 31 | + 0.2 |
| 0 | |||||||||
| d1 | 19.05 | 19.05 | 19.05 | 19.05 | 19.05 | 19.05 | 19.05 | 19.05 | + 0.05 |
| 0 |
Note: this drawing is only for the guidance of purchaser and indicated only the main dimensions.
Advantages of Singleuse Metal Cops
Due to controlled Run Out
maintenance of Spindle & bolster reduces for Draw Twister as well as Splitting yarn
machine.
Oil change frequency reduces
due to vibration free Cops.
Cops are well controlled in
weight.
Single use Cops are cost
effective compared to Multi use Cops.
CDW Single use Cops can be used
for 2 or maximum 3 cycles for Draw Twisting machine / Splitting yarn machine.
ERW Single use Cops can be used
for only single cycle.
Application of Singleuse Metal Cops
For Draw Twisting Machine as
well as Splitting yarn machine for Polyester & Nylon Yarn.
Quality Assurance Equipment used
