Allen Brothers 30mm Dynamic Block – High Load (A2030HL)
The Allen Brothers A2030HL is a 30mm single Dynamic block upgraded with a stainless steel sheave, designed for higher load applications where reduced friction and increased durability are essential. With a maximum rope diameter of 8mm, it provides a step up from the standard Dynamic block while retaining the same fast-running performance characteristics.
This High Load variant is ideal for control systems subjected to increased static loads or higher line tensions.
Stainless Steel Sheave for Increased Load Capacity
The defining feature of the A2030HL is its stainless steel sheave, which delivers:
- Higher working load capability
- Reduced deformation under load
- Even lower friction compared to standard acetal sheaves
- Compatibility with both rope and wire
This makes the block particularly suited to more demanding applications, including:
- Heavily loaded vang and kicker systems
- High-load control lines
- Systems using wire or high-modulus rope
Dynamic Bearing System for Smooth Operation
The A2030HL retains Allen’s patented Dynamic bearing system:
- Twin rows of stainless steel ball bearings
- Stainless steel bearing rail
This configuration ensures smooth, low-friction sheave rotation, even under repeated adjustment and higher loads. Compared to bearing systems running on plastic races, the stainless-steel rail improves load distribution and long-term performance.
Ultra-Strap Construction for Strength and Reliability
The A2030HL features Allen’s patented Ultra-Strap, manufactured using a coining process to enhance strength and durability.
This results in:
- A more hard-wearing and reliable stainless steel strap
- Improved resistance to wear in high-load environments
- A rope-friendly profile suitable for modern rigging setups
Originally developed for rope attachment, the Ultra-Strap offers flexibility across both traditional and soft rigging configurations.
Integrated Becket for Efficient System Design
A large central rivet acts as a rope-friendly becket, allowing:
- Direct line termination within the block
- Cleaner and more compact cascade systems
- Reduced need for additional fittings
This is particularly beneficial in multi-part purchase systems where simplicity and efficiency are key.
Designed for Higher Load Control Systems
The A2030HL builds on the proven Dynamic platform by increasing load handling without compromising low-friction performance.
For sailors operating higher-load systems or requiring compatibility with wire, it provides a robust and efficient solution while maintaining the smooth operation expected from the Allen Dynamic range.
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