Selden Blocks – BBB20 Single Lead

BBB’s are used where the loads are more moderate & dynamic. The ball bearings provide for good sheave rotation with the lowest possible friction. Available in 20, 30, 40, and 60 mm sheave diameters. 20/30/40

  • Stainless steel strap to ensure high strength & stiff sides.
  • Stainless steel ball bearing races, stainless steel ball bearings & acetal sheave for best bearing strength even under high dynamic loads.
  • Acetal bearing cages to prevent ball-to-ball friction & to reduce weight.
  • Glass fibre reinforced composite.
  • BBB 20 Glass fibre reinforced composite cheeks.
  • Acetal ball bearings for light weight.
  • Acetal sheave.



Weight: 8.00 g

Breaking Load: 200 kg

Safe working Load: 100 kg

System: BBB20

Max line size: mm

Upper breaking load:  kN

Upper safe working load:  kN

Mounting: 2xM4

Additional information

Weight 1 lbs
Dimensions 2 × 1 × 2 in