Allen Brothers 30mm Dynamic Triple Block – High Load (A2034HL)
The Allen Brothers A2034HL is a 30mm High Load triple Dynamic block, designed for high-performance purchase systems operating under increased loads. Featuring three stainless steel sheaves, it delivers enhanced strength, reduced friction, and improved durability compared to standard acetal versions.
With a maximum rope diameter of 8mm, it is ideally suited to demanding dinghy and performance applications using smaller diameter lines.
Stainless Steel Sheaves for Higher Load Performance
The A2034HL is equipped with stainless steel sheaves, providing:
- Increased working load capability
- Reduced deformation under high line tension
- Lower friction and faster rolling speeds
- Compatibility with both rope and wire
This makes it particularly well suited to:
- Heavily loaded kicker / vang systems
- High-load cascade setups
- Control systems using wire or high-modulus rope
Triple Sheave Design for Maximum Purchase
The three-sheave configuration allows the A2034HL to be used in:
- Cunningham systems
- Kicker / vang cascades
- High-load multi-part purchase systems
This provides maximum mechanical advantage while maintaining efficient load distribution across the system.
Dynamic Bearing System for Smooth Operation
Each sheave runs on Allen’s patented Dynamic bearing system:
- Twin rows of stainless steel ball bearings
- Stainless steel bearing rail
This configuration ensures smooth, low-friction performance, even under higher loads. Compared to systems using plastic bearing races, the stainless-steel rail improves load distribution and long-term durability.
Ultra-Strap Construction for Strength and Reliability
The A2034HL features Allen’s patented Ultra-Strap, manufactured using a coining process to enhance strength and wear resistance.
This results in:
- A stronger, more durable stainless steel strap
- Improved reliability in high-load environments
- A rope-friendly profile suitable for modern rigging setups
Integrated Becket for Efficient Systems
The large central rivet acts as a rope-friendly becket, allowing:
- Direct line termination within the block
- Cleaner, more compact cascade systems
- Reduced need for additional fittings
This is particularly beneficial in multi-part purchase systems where simplicity and efficiency are key.
A High Load Solution for Demanding Purchase Systems
The A2034HL builds on the proven Dynamic platform by combining triple sheave efficiency with increased load capacity.
For sailors operating high-load control systems, it offers a durable, low-friction solution that integrates seamlessly into modern rigging setups.
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