Karver KBO1 Single Block

Strengths:

• Quick fixing with the supplied textile shackle
• At equal workload, a textile shackle is much lighter than a stainless steel shackle
• Easy opening even after several years of use. No need for a shackle remover. No lost axis.
• No stainless steel shackle = no metal-to-metal squeaking and no rust drips.
• Simplicity : The shackle guide simplifies installation and use
• Lightweight : The optimization of design and materials make the KBO pulley an extremely compact and reliable pulley
• The KBO pulley incorporates side balls (from KBO8) and central rollers. The friction coefficient is minimum
• KBO1 to KBO8 = flanges in fiber-reinforced composite materials
• KBO10 to KBO50 = flanges in aluminum

K Tips:

• If you want to use a KBO block as a replacement for a competing block, check the working load of the block you are replacing.
• Our blocks are much more compact and much lighter than our competitors. Check the maximum rope diameter allowed. At the same working load, we sometimes have narrower rope passages.
• We are often asked the question of the interest of a block compared to a friction ring. The answer is kinda in the question. A friction ring or block (even a weak one) has more friction than a block with a bearing. More friction = more effort to take tension = less performance. In fact, a friction ring does not cause a major problem when there are a few centimeters of line to recover but becomes totally counterproductive when it comes to recovering several meters. We often take the simple comparison of a crate (even empty) with or without wheels. The relevance of the expenditure of the casters depends directly on the distance to be covered… and / or the physical condition of the person pushing !
  

  Description	Imperial	Metric
  Weight	3.53 oz.	100.00 g.
  Boat size	10.00 – 110.00 in.	254.00 – 2794.00 mm.
  Workload	0.17 US T.	0.15 T.
  Breaking load	0.33 US T.	0.30 T.
  Sheave diameter	8/9 in.	22.50 mm.
  Groove diameter	5/7 in.	17.80 mm.
  Recommended max line	1/4 in.	6.00 mm.
  Best max line diameter	1/5 in.	5.00 mm.
  Thickness	1/2 in.	12.70 mm.
  Center diameter	1/4 in.	6.00 mm.