Harken 1-Ton Twing Block for Heavy-Duty Sailing Applications – Model 3405

Description

1 Ton Twing Block

The Twing block features a spring-loaded side opening mechanism for true one-handed rigging, even while wearing sailing gloves. Black anodized aluminum sideplates are edged with robust bumpers to protect the block, topsides, and deck. The sheave is aluminum rolling on a bearing system shared with Harken’s existing 2.3T high-load snatch block. 

Features:

• Side opening side plate – Easy to rig and remove from sheet
• Spring loaded button release – Quick one-handed rigging
• Anti-capsize bar – Keeps sheave aligned on sheet
• ULC main bearing – Sheave turns smoothly under extreme loading
• Sideload balls – Carry loads especially when the block is not aligned in light air
• Thimble at pivot base – Use 1:1 or 2:1 up-down control
• Machined aluminum inner sideplates – High strength, low weight
• Soft polyurethane outer side plate bumpers – Protects block and deck

Uses:

• Twing, tweaker control for code zero sheets
• Can be used as a snatch block when combined with a soft shackle
• Spinnaker sheet and guy control

Specifications:

• Sheave Ø (mm): 38.5 mm
• Sheave Ø (in): 1-1/2 in
• Maximum line Ø (mm): 11 mm
• Maximum line Ø (in): .43 in
• Maximum working load (kg): 1000 kg
• Maximum working load (lb): 2205 lb
• Breaking load (kg): 2000 kg
• Breaking load (lb): 4409 lb

Owner’s Manual (pdf)

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