Ronstan Series 25 Ball Bearing HHL Lashing Orbit Block [RF28109HL]

Name: Ronstan Series 25 Ball Bearing HHL Lashing Orbit Block [RF28109HL]
Brand: Ronstan
SKU: EM-110655
Price: 90.95 USD
Availability: InStock

$90.95 $107.00

Refund & Return Policy

Returns are accepted within 30 days after shipment. To be eligible for a return, items must be unused, uninstalled, and in their original packaging, and proof of purchase is required. Installed or used products, clearance or final-sale items are not eligible for return. Return Merchandise Authorization (RMA) numbers are required for all returns. Learn more.

Shipping Policy

Egret Marine ships marine parts and accessories within the continental United States only. Orders are processed same day if placed before 3pm CST. or within 1 business days if placed after 3pm CST, excluding weekends and holidays. Learn more.

Description

Series 25 Ball Bearing HHL Lashing Orbit Block™

Single sheave ball bearing high load block with becket hub option and lashing head.

The Series 25 Ball Bearing Orbit Blocks™ deliver superior strength, reduced weight, and exceptional performance for high-demand dinghy and small boat applications.

Designed with competitive sailors and performance boats in mind, these compact 25mm blocks are engineered to achieve the highest possible strength-to-weight ratio. Featuring Ronstan’s renowned high-compression strength acetal bearing system, the Series 25 BB Orbit Blocks are a lightweight yet durable solution, ideal for control line systems such as mainsheet and spinnaker sheet turning blocks, cunninghams, and cascading vangs on dinghies up to 4 metres.

Each block has a stainless steel hub for versatile lashing attachments and through-sheave becket functionality, making them adaptable to a wide range of rigging setups. The hub accommodates up to 4mm (5/32") lashing and ensures maximum efficiency without compromising reliability.

The range also includes a High Load (HHL) variant – the RF28109HL – which is equipped with a Grade 2205 stainless steel sheave and bearing race, paired with Grade 304 stainless steel ball bearings. These HHL blocks are purpose-built for high-load applications and are increasingly in demand for modern performance and foiling boats using small-diameter lines to carry significant loads.

Features:

2-stage ball bearing system.
Suits up to 8mm (5/16”) lines.
Hollow hub for becket take-off.
Lashing blocks suit up to 4mm (5/32”) lashing.

Specifications:

Max. Rope diameter (in): 5/16
M.W.L. (lb): 880
Sheave diameter (in): 1
B.L. (lb): 2650
Weight (oz): 1.2

Applications:

Mainsheet and spinnaker sheet turning blocks on dinghies to 4m (13ft).
Control lines.
Cascading vangs.
Leech lines & cunninghams.

Materials:

Frame/cheeks: Toughened, glass fibre reinforced nylon.
HHL Sheave and bearing race: Grade 2205 stainless steel with Grade 304 stainless steel ball bearings.