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RF25109HL Series 20 BB Orbit Block

Lashing Head User Instructions 

 (cont.)

USER INFORMATION - RF25109HL Series 20 BB Orbit Block™ Lashing Head User Instructions

Page 4.

2.3 SINGLE LINE USED AS BECKET & SHEETS - FOR SHEETS UP TO 3MM (1/8”)

2.3.1 

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.

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.

2.3.2 

Pass both ends 

through the hub in 

opposite directions.

2.3.3

 Finish lashing with appropriate knot, splice or whipping. If a knot is 

used it must not be a ‘slip’ knot, and the knot must be such that it pulls 

equally on each line leading up to the hub. A bowline is ideal. Note: the 

breaking load of the installed block is dependent on the breaking load of 

the line; up to a maximum B.L. of 900kg (1980lb). Knots, splices, stitching, 

etc. will generally have a lower breaking load than the rope itself.

3.0 CARE AND MAINTENANCE

4.0 DEFINITIONS

Summary of Contents for BB Orbit Block 20 Series

Page 1: ...vided e g 1 7 2mm passed through multiple times The RF25109HL Series 20 Orbit Block is supplied with 750mm 30 of 2mm 3 32 diam single braid Dyneema lashing line For best results the lashing must be attached to a mounting point with a smooth well rounded profile Avoid attaching directly to fittings with sharp edges or rough surfaces that may damage the lashing through abrasion or point loading For ...

Page 2: ...ating a poor lead The strands from one side of the block should be to the outside and the strands from the other side passing between them See diagram 1 4 3 1 2 2 Pass lashing line in through the opposite cheek and back up through the head 1 3 2 Pass lashing line through the hub 1 2 3 Loop lashing line over the fixing point Pass back down through the head and out the same cheek it last passed thro...

Page 3: ...eets up to 3mm 1 8 It is possible for the lashing to be used as the becket and sheet line also 2 0 BECKET OPTIONS 2 2 LASHING USED AS BECKET FOR SHEETS 4 6MM 5 32 1 4 2 2 1 Pass the lashing line down through the head out through the cheek and through the hub 2 2 2 Loop under the bottom of the block and again though the hub 2 2 3 Repeat step 2 2 2 if more than one loop is required to meet the desir...

Page 4: ...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 fo...

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