Ronstan Series 20 Ball Bearing Orbit Cheek Block
Single sheave cheek block with 2-stage ball bearing system. Requires 1 x 5mm (3/16″) & 1 x 3mm (1/8″) fasteners.
Applications
- Control lines.
- Leech lines & cunninghams.
Materials
- BB Sheave: High compression strength acetal.
- Frame/cheeks: Toughened nylon.
| Part Number | Sheave Diameter | Fastener Diameter | Qty. Fasteners | |
|---|---|---|---|---|
| RON-RF25151 | 20mm | 5 & 3 | 2 |
![JL Audio 25′ Cable f/Connection of Non-NMEA 2000 Remote Controllers w/MediaMaster – MMC-25 [010-13429-00]](https://www.dockfittingworks.com/wp-content/uploads/2026/10/jl-audio-25-cable-f-connection-non-nmea-2000-remote-controllers-w-mediamaster-mm.webp)