Seldén 20 mm plain bearing blocks (PBB20) for dinghy trim lines and light applications, available as a standard single for flag lines and lazy jacks and a flip-flop variant designed for cunningham, outhaul and halyard trim on dinghies.
How to choose
The PBB20 range covers two distinct applications. The standard single is a basic plain bearing block for flag lines and lazy jacks where load is minimal and the line moves infrequently. The flip-flop is a purpose-designed trim line block for active dinghy controls including cunningham, outhaul and halyard, where a compact, low-profile fitting that can be operated from either side suits the application better than a conventional block.
If you need a block for a loaded control line that runs frequently, the BBB20 ball bearing range is the correct choice. Plain bearing blocks are not intended for dynamic applications where friction matters.
What's in this collection
The PBB20 single (402-001-01) is a 20 mm plain bearing block for flag lines and lazy jacks on lines up to 6 mm.
The PBB20 flip-flop (402-001-02) is a 20 mm plain bearing block designed specifically for dinghy trim lines including cunningham, outhaul and halyard. Its low-profile design suits the compact spaces and frequent handling typical of these applications.
