Description
The 25-1 is the smallest standard single row roller chain size we supply, built around a 6.35 mm (1/4 in) pitch. Light, compact drives use it where a larger chain will not fit – roller blind mechanisms, motor tracks, small assembly units and light transmission drives. Because the chain is short-pitched, it articulates tightly and suits small sprockets and short centre distances.
Product Features
- Single row construction on a 6.35 mm (1/4 in) pitch
- Short pitch that allows small sprockets and compact drive layouts
- Standard chain with a light, flexible run for low-load applications
- 25SS stainless variant available as a separate model
- Supplied as a made-up run or as loose links and connecting links
- Cut to the run length your mechanism needs
- OEM branding available for repeat orders
Product Advantages
- Fits drives where a larger pitch chain simply will not go
- Light weight keeps the load on small motor and gearbox bearings down
- Loose links and connecting links mean a worn chain can be repaired in place
- One supplier for chain and matching sprockets keeps the drive consistent
- Short-pitch chain runs quietly at the low loads these drives see
- Backed by over 40 years of chain production and export experience
Product Specifications
| Product type | Single row roller chain |
| Model | 25-1 (25SS stainless variant) |
| Pitch | 6.35 mm (1/4 in) |
| Rows | Single row, single strand |
| Link style | Single |
| Material | Please contact our sales team to confirm |
| Roller diameter | Please contact our sales team to confirm |
| Tensile strength | Please contact our sales team to confirm |
| Chain overall width | Please contact our sales team to confirm |
| Standard | Standard |
| Application | Roller blind, motor track, assembly machine and light transmission drives |
| Chain length | Custom chain length available on request |
| Sprockets | Matching sprockets available on request |
| Customization | OEM available, customer brand accepted |
| MOQ | Please contact our sales team to confirm |
| Packing | Standard export packing, customized packing on request |
| Place of origin | Xiamen, China |
Application Scenarios
This is a small-pitch chain, so it is used where the drive envelope is tight rather than where the load is heavy. Typical applications include:
- Roller blind and blind slat drive mechanisms
- Motor track and small linear slide drives
- Light assembly machine indexing units
- Small packaging and labelling machine drives
- Model and hobby transmission layouts
- Any compact drive running on small sprockets











