Ronstan Series 25 Ball Bearing HHL Lashing Orbit Block™

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.

SKU: #524931759288195
Weight: 0.02 lbs
Brand: Ronstan

Model: RF28109HL
Shipping Dimensions: 1.00" x 4.00" x 2.00"

RETURN POLICY

Last updated February 08, 2021

Thank you for your purchase. We hope you are happy with your purchase. However, if you are not completely satisfied with your purchase for any reason, you may return it to us for store credit only. Please see below for more information on our return policy.

RETURNS

All returns must be postmarked within two (2) days of the purchase date. All returned items must be in new and unused condition, with all original tags and labels attached.

RETURN PROCESS

To return an item, please email customer service at customerservice@marinemaster.com to obtain a Return Merchandise Authorization (RMA) number. After receiving a RMA number, place the item securely in its original packaging and the return form provided, and mail your return to the following address:

marinemaster.com

Attn: Returns

RMA #

397 Union Avenue

Laconia, NH 03246

United States

Please note, you will be responsible for all return shipping charges. We strongly recommend that you use a trackable method to mail your return.

REFUNDS

After receiving your return and inspecting the condition of your item, we will process your return. Please allow at least fourteen (14) days from the receipt of your item to process your return.

EXCEPTIONS

The following items cannot be returned:

special order
clearance

For defective or damaged products, please contact us at the customer service number below to arrange a refund or exchange.

Please Note

A 30% restocking fee will be charged for all returns.
Sale items are FINAL SALE and cannot be returned.
returned items must be unopened, unused, undamaged, in original packaging

QUESTIONS

If you have any questions concerning our return policy, please contact us at:

6035564422

customerservice@marinemaster.com