40 mm Ball Bearing Block - Double Cam Polymer thrust bearings resist side

Polymer thrust bearings resist side loads

That means

The block features stainless steel ball bearings for strength and smooth rotation and glass fiber reinforced polyamide sheave and cheeks

The 80 mm Plain Bearing Block - Double Becket is designed for heavy and static loads on larger boats

System 30 is used for medium sized yachts

40 mm Ball Bearing Block - Double Cam Polymer thrust bearings resist sideThe BBB40 Double Block features two 40 mm sheaves, designed for dynamic applications under medium loads. The stainless eye is fixed and allows for shackle or line attachments. Stainless steel ball bearings ensure smooth, low friction operation, while glass fiber reinforced cheeks provide strength and durability. Ideal for moderate and dynamic loads with minimal friction. Safe working Load: 500 kg Breaking Load: 1000 kg Max line size: 10 mm