Ribbed Lock Washer, SWR/SWRS
Brand :
NABEYA BI-TECH
Caution
Product Description
A washer to prevent loosening due to vibration.
[Features]
·The ribs on both sides of the washer bite into the bolt seating surface and the part to be tightened, preventing loosening due to vibration.
·It provides thread-locking for fasteners that cannot be solved with adhesives, etc.
·It has a higher thread-locking effect than regular spring washers.
·When combined with bolts of strength class 8.8, it provides a higher thread-locking effect.
·It can also be compatible with bolts with strength class 12.9.
[Applications]
·For thread-locking.
Drawing
Product Specification
External appearance of SWR
Material and Finish
| Product code | SWR | SWRS |
|---|---|---|
| Main body | Equivalent to S70CM (hardness 425 to 495 HV) black oxide coating (black) | SUS304 |
Specifications Table
SWR: steel, black oxide coating
Unit: mm
| Part number | Nominal | d | D | t | h | Weight (g) | ||
|---|---|---|---|---|---|---|---|---|
| SWR-2 | 2 | 2.2 | 0 to +0.3 | 4 | -0.3 to 0 | 0.35 | 0.6 | 0.02 |
| SWR-2.5 | 2.5 | 2.7 | 0 to +0.3 | 4.8 | -0.3 to 0 | 0.45 | 0.9 | 0.04 |
| SWR-3 | 3 | 3.2 | 0 to +0.3 | 5.5 | -0.3 to 0 | 0.45 | 0.9 | 0.05 |
| SWR-4 | 4 | 4.3 | 0 to +0.3 | 7 | -0.36–0 | 0.5 | 1 | 0.08 |
| SWR-5 | 5 | 5.3 | 0 to +0.3 | 9 | -0.36–0 | 0.6 | 1.1 | 0.14 |
| SWR-6 | 6 | 6.4 | 0 to +0.36 | 10 | -0.36–0 | 0.7 | 1.2 | 0.23 |
| SWR-8 | 8 | 8.4 | 0 to +0.36 | 13 | -0.43 to 0 | 0.8 | 1.4 | 0.43 |
| SWR-10 | 10 | 10.5 | 0 to +0.43 | 16 | -0.43 to 0 | 1 | 1.6 | 0.82 |
| SWR-12 | 12 | 13 | 0 to +0.43 | 18 | -0.43 to 0 | 1.1 | 1.7 | 0.89 |
| SWR-16 | 16 | 17 | 0 to +0.43 | 24 | -0.52 to 0 | 1.3 | 2.1 | 2 |
| SWR-20 | 20 | 21 | 0 to +0.52 | 30 | -0.62 to 0 | 1.5 | 2.4 | 3.4 |
SWRS: stainless steel
Unit: mm
| Part number | Nominal | d | D | t | h | Weight (g) | ||
|---|---|---|---|---|---|---|---|---|
| SWRS-1.6 | 1.6 | 1.7 | 0 to +0.3 | 3.2 | -0.3 to 0 | 0.5 | 0.75 | 0.02 |
| SWRS-2 | 2 | 2.2 | 0 to +0.3 | 4 | -0.3 to 0 | 0.5 | 0.75 | 0.03 |
| SWRS-2.5 | 2.5 | 2.7 | 0 to +0.3 | 4.8 | -0.3 to 0 | 0.5 | 0.95 | 0.04 |
| SWRS-3 | 3 | 3.2 | 0 to +0.3 | 5.5 | -0.3 to 0 | 0.5 | 0.95 | 0.05 |
| SWRS-4 | 4 | 4.3 | 0 to +0.3 | 7 | -0.36–0 | 0.7 | 1.2 | 0.08 |
| SWRS-5 | 5 | 5.3 | 0 to +0.3 | 9 | -0.36–0 | 0.7 | 1.2 | 0.14 |
| SWRS-6 | 6 | 6.4 | 0 to +0.36 | 10 | -0.36–0 | 0.7 | 1.2 | 0.23 |
| SWRS-8 | 8 | 8.4 | 0 to +0.36 | 13 | -0.43 to 0 | 1 | 1.6 | 0.43 |
| SWRS-10 | 10 | 10.5 | 0 to +0.43 | 16 | -0.43 to 0 | 1 | 1.6 | 0.82 |
| SWRS-12 | 12 | 13 | 0 to +0.43 | 18 | -0.43 to 0 | 1.25 | 1.85 | 0.89 |
| SWRS-16 | 16 | 17 | 0 to +0.43 | 24 | -0.52 to 0 | 1.5 | 2.3 | 2 |
| SWRS-20 | 20 | 21 | 0 to +0.52 | 30 | -0.62 to 0 | 1.8 | 2.8 | 3.4 |
Performance / Test Information
Vibration test comparison (test hex bolt: DIN933-8.8-M10-35, vibration: 15 Hz, amplitude: 0.5 mm)
Spring washer (DIN127)
Ribbed lock washer (SWR)
