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Ronstan International, Inc.

http://www.ronstanmarine.com
Phone: 401-293-0539
Fax: 401-293-0538

Address:
45 High Point Ave., Suite 2
Portsmouth, RI 02871
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Pulleys: Ball Bearing, Plastic or Stainless Steel related categories

Ball Bearing Blocks & Pulleys

The term ′′Pulley′′ and ′′Block′′ is frequently interchanged.
Pulleys for Fibrous rope up to 1/2′′
Breaking Load Capacities to 8,820 lbs.

Blocks & Pulleys - Series 60 Orbit

For 1/2′′ fibrous rope size
Exceptionally high strength-to-weight ratio.
Captive ball bearings for side thrust loads require no side retainer plates, reducing weight and providing a wider bearing surface for the Torlon® needle rollers.
Head posts of swivel blocks can be locked at 0 or 90 degrees.
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.
Removable becket pin allows lines to be spliced prior to fitting.
Stand-up blocks have rubber support bases that relax to 90 degrees (typically for foreguy/afterguy) or 60 degrees (for halyard and other lead block applications).
Halyard blocks have a removable pin for attachment to deck padeyes or the mast collar, providing a low lead aft to organisers or winches.

Aluminum Alloy - P.E.T.P. Bearing
These sheaves feature a hardcote anodized 6061 -T6 Aluminium alloy sheave for optimum abrasion resistance. The crystalline thermoplastic polyester (P.E.T.R) bearing is an excellent high load bearing with self lubricating properties.