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Ronstan BB Orbit Block RF25109 20 Series, User Instructions

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Ronstan BB Orbit Block RF25109 20 Series User Instructions Download Page 6

3.0 CARE AND MAINTENANCE 

4.0 DEFINITIONS

Lashing attachment

•  To receive the maximum performance benefit from the Lashings, they must be used correctly installed, inspected regularly and replaced 

when required.

•  Lashings must be attached to a mounting point with a smooth, well rounded profile without sharp edges or burrs. If in doubt, use a 

shackle with a smooth surface between the Lashing and the mounting point.

•  Lashings will eventually suffer degradation from fatigue, wear and UV exposure. Like all running and standing rigging, Lashings should be 

inspected as a part of your regular boat maintenance program and replaced if they show significant wear or fibre damage.

Orbit Blocks™

•  Grit and sand will damage bearing systems. Ronstan Orbit Blocks™ have a precisely engineered bearing system that should be kept clean 

and free of sand and grit to ensure optimum performance and service life. Blocks, in particular the bearing areas, should be flushed with 
fresh water regularly and periodically cleaned with a mild detergent and water.

•  Dry lubricants such as Ronstan Sailfast silicon spray may be used to lubricate the bearing system. Oil/petrochemical based lubricants 

must not be used.

•  Ronstan Orbit Blocks™ are designed and manufactured for applications on sailboats.
•  See the INFO section of the Ronstan web site and our catalogue for important customer considerations and warranty information.

BB  =  Ball Bearing     MWL  =  Maximum Working Load     BL  =  Breaking Load
Dyneema

®

 is a trademark of Royal DSM NV.

DSM is the inventor and manufacturer of Dyneema

®

, the world’s strongest fibre™. “Dyneema

®

”, and “Dyneema

®

, the world’s strongest 

fibre™” are trademark(s) (applications) owned by Royal DSM NV.

Summary of Contents for BB Orbit Block RF25109 20 Series

Page 1: ...eaking Load of the assembly Block Lashing is generally limited by the strength of the rope and the joining method Knots splices stitching etc will generally have a lower Breaking Load than the rope itself It is possible to use up to 4mm 5 32 line for lashing the RF25109 running the lashing around as a single strand but a neater result with more secure knotting can often be achieved by using a smal...

Page 2: ... at 0 1 2 Attachment at 90 1 3 Line end attachment Large diameter object attachment Must have at least 2 strands 1 4 1 2 1 1 2 2 1 2 3 1 2 4 1 2 5 Pass the line down through the head out through the cheek and through the hub Pass line in through the opposite cheek and back up through the head Loop line over the fixing point Pass back down through the head and out the same cheek it last passed thro...

Page 3: ...slipping non tightening knot 1 3 Line End Attachment 1 4 1 1 4 2 Where attachment to a large diameter object wider than the head of the block is required eg a boom the lashings must cross each other between the head of the block and the object More than one strand of lashing is required to prevent the block twisting and creatinfg a poor lead The strands from one side of the block should be to the ...

Page 4: ... sheets up to 3mm 1 8 Lashing Used as Becket For sheets 4mm 5 32 to 6mm 1 4 Lashing Used as Becket and Sheet Line For sheets up to 3mm 1 8 It is possible for the lashing to be used as the becket and sheet line also 2 1 1 2 1 2 Attach block to fixing point as per lashing option 1 1 to 1 4 Pass the sheet end through the hub and secure with a bowline or eye splice 2 1 Through Hub Becket for Sheets up...

Page 5: ...ck in through the far side cheek and back up through the head 2 2 Lashing Used as Becket for Sheets Line 4mm 5 32 to 6mm 1 4 2 3 Single Line Used as Becket Sheet Line for Sheets up to 3mm 1 8 2 3 1 2 3 2 2 3 3 Pass the line in through a cheek up through the head around the fixing point back down through the head and out through the opposite cheek Pass both ends through the hub in opposite directio...

Page 6: ... Orbit Blocks have a precisely engineered bearing system that should be kept clean and free of sand and grit to ensure optimum performance and service life Blocks in particular the bearing areas should be flushed with fresh water regularly and periodically cleaned with a mild detergent and water Dry lubricants such as Ronstan Sailfast silicon spray may be used to lubricate the bearing system Oil p...

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