![[Tsubaki] — RS25-1 G8 Drive Chain Roller Chain (Single Strand)](https://prosourcemro.com/wp-content/uploads/2026/05/001-265-1024x1024.png)
Roller Chains
TSUBAKI
[Tsubaki] — RS25-1 G8 Drive Chain Roller Chain (Single Strand)
Family ID: TSB-RS25-1
Tsubaki G8 General-Purpose Drive Chain — ISO 'A' series roller chain for wide-range power transmission from low-speed heavy-load to high-speed applications. Anti-friction lubricant sealed in sintered bushings achieves 1.2x wear life vs G7-EX. Transmission efficiency improved 33% over previous generation. Available in single, double, and triple strand; multiple connecting link types. RS35 and smaller: same dimensions as conventional chain. Compatible with standard ISO/JIS sprockets.
4 product codes available in this family
Product Codes & Specifications
| Product Code | Description | Brand | Spec | ||
|---|---|---|---|---|---|
| RS25-1-RP-U | Standard (Unit Link) | Tsubaki | Series: RS25-1 | Pitch: 6.35 mm | Roller Diameter: 3.18 mm | Inner Width: 3.18 mm | Strands: 1 | Standard: ISO 'A' / JIS B 1801 | Generation: G8 | Lubrication: Anti-Friction Sealed (Sintered Bushing) | Wear Life: 1.2x vs G7-EX | Efficiency Gain: +33% vs Previous Gen | Application: General power transmission, conveyor, industrial machinery | Link Type: Standard (Unit Link) | ||
| RS25-1-JL | Connecting Link (Joint Link) | Tsubaki | Series: RS25-1 | Pitch: 6.35 mm | Roller Diameter: 3.18 mm | Inner Width: 3.18 mm | Strands: 1 | Standard: ISO 'A' / JIS B 1801 | Generation: G8 | Lubrication: Anti-Friction Sealed (Sintered Bushing) | Wear Life: 1.2x vs G7-EX | Efficiency Gain: +33% vs Previous Gen | Application: General power transmission, conveyor, industrial machinery | Link Type: Connecting Link (Joint Link) | ||
| RS25-1-RP-150UR | Cotter Pin — 150UR | Tsubaki | Series: RS25-1 | Pitch: 6.35 mm | Roller Diameter: 3.18 mm | Inner Width: 3.18 mm | Strands: 1 | Standard: ISO 'A' / JIS B 1801 | Generation: G8 | Lubrication: Anti-Friction Sealed (Sintered Bushing) | Wear Life: 1.2x vs G7-EX | Efficiency Gain: +33% vs Previous Gen | Application: General power transmission, conveyor, industrial machinery | Link Type: Cotter Pin — 150UR | ||
| RS25-1-2POL | Press-fit — 2POL | Tsubaki | Series: RS25-1 | Pitch: 6.35 mm | Roller Diameter: 3.18 mm | Inner Width: 3.18 mm | Strands: 1 | Standard: ISO 'A' / JIS B 1801 | Generation: G8 | Lubrication: Anti-Friction Sealed (Sintered Bushing) | Wear Life: 1.2x vs G7-EX | Efficiency Gain: +33% vs Previous Gen | Application: General power transmission, conveyor, industrial machinery | Link Type: Press-fit — 2POL |
