Ball Bearing

RF79151

Series 75 Orbit Block™, Foot

Single sheave foot block

FEATURES

The highest strength-to-weight ratio.

Minimal friction loss, especially when working at high loads.

Totally reliable and trouble free performance.

Simplicity of design and construction to facilitate maintenance and servicing.

Elegant, functional styling and finish. Removable cover plate.

Requires 2 Fasteners: 1x 8mm and 1x 10mm.

Specifications

Product Specifications
Max. Rope diameter (in)9/16
M.W.L. (lb)4850
Sheave diameter (in)3
B.L. (lb)9920
Weight (oz)9.5
Fastener Ø (in)1x 5/16", 1x 3/8"
$409.00

Product Information

Features through-hub mounting for maximum strength. Cover plate can be removed for service access and can be stacked to create double and triple foot blocks.

Orbit Blocks™ are a no-compromise product range developed to meet the demands and expectations of the very dedicated and increasingly professional racing sailor. Side cheeks incorporating head structure and hub are precision machined as a single part from solid alloy, leaving material only where it contributes to the load carrying capacity of the block and eliminating the need for additional fasteners.

The Orbit sheave has captive acetal or Torlon® ball bearings for side thrust loads, eliminating the need for side retainer plates. This reduces weight and allows for a wider bearing surface that can accommodate longer Torlon® needles – achieving a substantially higher strength-to-weight ratio.

Technical Information

Applications

Primary mainsheet, halyard and spinnaker systems on boats to 14m (46ft).

Secondary mainsheet, vang blocks on boats to 15m (50ft).

Standard and running backstay systems on boats to 12m (40ft).

General control line and lead block applications on larger yachts.

 

Materials

Fully machined Alloy cheek plates. Alloy sheaves with captive ball races. Torlon® needle rollers. Carbon black Acetal ball bearings

 

Resource Files

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