Ronstan CW55173 Series 30 Ball Bearing Orbit Block153; - Single - Becket - Swivel Shackle Head

<B>Series 30 Ball Bearing Orbit Block™ - Single - Becket - Swivel Shackle Head</B><br><br>Ball Bearing Orbit Blocks™ boast the highest strength-to-weight ratio available. This is achieved through all-composite reinforced polymer materials and multiple attachment options. <br>Their precision design provides the optimum number of ball bearings for minimum friction while weight reduction is achieved through the use of fiber-reinforced composites in the block head, cleat arms and beckets.<br><br><B>Features:</B><br><UL><LI>Lightweight<br><LI>Highest working load in its class<br><LI>Secure, versatile and secure attachement<br><LI>Low profile and compact<br><LI>Ultra low profile thru-sheave becket<br><LI>Low friction 2-stage ball bearing system provides consistent performance over the full working load range</LI></UL><br><br><B>Applications:</B><br><UL><LI>Mainsheet systems and spinnaker sheets on dinghies to 5M(16')<br><LI>Halyard, vang and backstay applications on boats to 5M(16')<br><LI>Control line applications on larger yachts</LI></UL><br><br><B>Materials:</B><br><UL><LI>Sheave: High compression strength carbon black Acetal<br><LI>Ball Bearings: High compression strength Acetal<br><LI>Frame/Cheeks: Toughened, glass fiber reinforced Nylon<br><LI>Link: UV stabilized, multi-strand impregnated SK75 Dyneema®</LI></UL><br><br><B>Specifications:</B><br><B>Sheave Ø:</B>30mm(1-3/16")<br><B>Max. Rope Ø:</B>8mm(5/16")<br><B>M.W.L.:</B>300kg(660lbs)<br><B>B. L.:</B>600kg(1,320lbs)<br><B>Weight:</B>32g(1.1oz)<br> <!--- cis2:mm1rmZVk --->