![[Tsubaki] — RS40-NEP-1 NEPTUNE Coating Drive Chain Roller Chain](https://img.prosourcemro.com/2026/05/001-269.png)
Roller Chains
TSUBAKI
[Tsubaki] — RS40-NEP-1 NEPTUNE Coating Drive Chain Roller Chain
Family ID: TSB-RS40-NEP-1
Tsubaki NEP (NEPTUNE) Coating Drive Chain — special coating and resin coating applied to RS roller chain for highly corrosive environments such as washing processes and wet conditions. Renewed from legacy NEP to NEPTUNE specification (June 2015) with improved chemical resistance. RoHS compliant. Salt spray test (SST) rated 700 hours. Note: maximum allowable load approx. 15% lower than standard RS roller chain — size selection required.
3 product codes available in this family
Product Codes & Specifications
| Product Code | Description | Brand | Spec | ||
|---|---|---|---|---|---|
| RS40-NEP-1-U | Standard (Unit Link) | Tsubaki | Series: RS40-NEP | Pitch: 12.70 mm | Roller Diameter: 7.92 mm | Inner Width: 7.85 mm | Strands: 1 | Coating: NEP (NEPTUNE) — Special Coating + Resin Coating | Corrosion Resistance: SST 700 hrs | RoHS: Compliant | Max Load: -15% vs Standard RS (size up recommended) | Standard: JIS B 1801 | Application: Washing lines, wet/humid environments, food processing, chemical exposure | Link Type: Standard (Unit Link) | ||
| RS40-NEP-1-JL | Connecting Link (Joint Link) | Tsubaki | Series: RS40-NEP | Pitch: 12.70 mm | Roller Diameter: 7.92 mm | Inner Width: 7.85 mm | Strands: 1 | Coating: NEP (NEPTUNE) — Special Coating + Resin Coating | Corrosion Resistance: SST 700 hrs | RoHS: Compliant | Max Load: -15% vs Standard RS (size up recommended) | Standard: JIS B 1801 | Application: Washing lines, wet/humid environments, food processing, chemical exposure | Link Type: Connecting Link (Joint Link) | ||
| RS40-NEP-1-OL | Offset Link | Tsubaki | Series: RS40-NEP | Pitch: 12.70 mm | Roller Diameter: 7.92 mm | Inner Width: 7.85 mm | Strands: 1 | Coating: NEP (NEPTUNE) — Special Coating + Resin Coating | Corrosion Resistance: SST 700 hrs | RoHS: Compliant | Max Load: -15% vs Standard RS (size up recommended) | Standard: JIS B 1801 | Application: Washing lines, wet/humid environments, food processing, chemical exposure | Link Type: Offset Link |
