This Bulkhead Counter Bearing is a high-strength lashing fitting designed to be mounted onto container or ship bulkheads. It provides secure tension resistance up to 850kN, supporting container lashing rods or turnbuckles. Manufactured from structural steel and designed with wedge-type side blocks, it ensures a stable and rigid fixing even under dynamic shipboard conditions.

Bulkhead Counter Bearing is a high-performance structural component engineered for pressure resistance and alignment support in marine vessels, container systems, and heavy-duty industrial structures. To meet different installation scenarios, this series is available in two model types:

• AP-A1 – A one-piece integrated structure designed for maximum strength and secure installation.
• AP-A2 – A split-type design ideal for installations in confined or limited-access spaces, offering easy adjustment and maintenance.

With proven load-bearing capacity and structural stability, these counter bearings are widely applied in ship bulkheads, reinforced frames, guide rail systems, and piping support assemblies. Their robust construction and adaptability make them an essential solution for demanding engineering environments.

Compact, durable, and fully ISO-compliant, this fitting is essential for standardized container lashing and securing systems on modern vessels.

Bulkhead Counter Bearing AP-A1 & AP-A2

Model AP-A1: Integrated Counter Bearing

• Model: AP-A1
• Weight: 4.37 kg
• B.L. Tension: 850 kN (Min)
• Safe Working Tension: 425KN
• Material: Structural Steel
• Finish: Shop Primer
• Class Approval: ABS, DNV-GL, CCS, Others
• Category: Fixed Fittings in Hold
• Tags: Container Lashing Fitting, Counter Bearing, Container Fittings, Lashing Fittings

* Can be customized according to your needs, type and test class approved on request. Please contact us

Drawings and Features of AP-A1 Counter Bearing

AP-A1 – One-Piece Bulkhead Counter Bearing

The AP-A1 features a solid one-piece structure with an integrated base plate and reinforced web supports for high load-bearing capacity. Precision mounting holes ensure stable installation, while the central groove allows accurate alignment of shafts or pipes. The unit is surface-treated (e.g., galvanization or epoxy) for long-term corrosion resistance.

• Wedge-Block Locking Design – Self-securing under tension, prevents slippage
• Structural Steel Construction – Tough, durable, and corrosion-resistant
• Stronger rigidity with an integrated one-piece structure, suitable for high-intensity working conditions.
• Recommended for use in areas with ample space and for long-term fixed positions.
• Equipped with a single transverse reinforcing rib (indicated by a single horizontal bar), concentrating the load-bearing structure.

Typical Applications & Use Cases

Ideal for standard installations: The one-piece integrated structure offers exceptional rigidity and stability, making it suitable for areas with sufficient installation space and uniform surfaces.

Recommended for flat deck foundations, container base frames, and mechanical hold reinforcement.

Minimizes vibration and displacement under heavy load conditions due to its robust construction.

Preferred for new shipbuilding projects and standardized module installations where ease of alignment and long-term durability are required.

Model AP-A2: Split-Type Counter Bearing

• Model: AP-A2
• Weight: 8.7 kg
• B.L. Tension: 850 kN (Min)
• Safe Working Tension: 425KN
• Material: Structural Steel
• Finish: Shop Primer
• Class Approval: ABS, DNV-GL, CCS, Others
• Category: Fixed Fittings in Hold
• Tags: Container Lashing Fitting, Counter Bearing, Container Fittings, Lashing Fittings

* Can be customized according to your needs, type and test class approved on request. Please contact us

Drawings and Features of Heavy AP-A2 Double Counter Bearing

AP-A2 – Split-Type Bulkhead Counter Bearing

The AP-A2 adopts a two-part design with left and right segments for flexible installation in tight spaces. Dowel holes or guide pins ensure accurate alignment. Each half includes flanged bases and a central guide channel to support structural positioning. The surface is protected with corrosion-resistant coatings suitable for marine and industrial environments.

• Facilitates assembly and disassembly, suitable for structural constraints and maintenance requirements.
• Recommended for use in confined spaces or areas requiring replacement or adjustment.
• Features double transverse reinforcing ribs (indicated by double horizontal bars) to enhance local load-bearing capacity.
• Modular design with left and right parts combined to form a complete load-bearing block.

Typical Applications & Use Cases

Engineered for limited or irregular spaces: The two-part modular design allows for flexible assembly and disassembly.

Perfect for retrofits, angled corners, and restricted zones where traditional one-piece fittings cannot be used.

Allows easy replacement and maintenance without dismantling large structures—especially useful in upgrade or repair works.

Frequently used in retrofit marine projects, compact engine rooms, or custom equipment where installation access is limited.

With over a decade of manufacturing and global distribution experience, OLIPORTS has developed deep expertise in container lashing and cargo securing systems. We fully understand the design drawings, structural layouts, and mechanical calculations behind every container ship’s securing solution — allowing us to respond quickly and accurately to your technical requirements.

• Deep understanding of ship lashing plans and design drawings
• Support for custom layouts to match your vessel and route
• ISO-compliant and class-approved products with full documentation
• Fast quote turnaround and fewer sample revisions
• Trusted by yards, shipowners, and retrofit contractors worldwide

Built to perform. Certified to last. Delivered on time.