TLB-374 Unsupported Boom Top Loading Arm
Unsupported boom top loading arms (TLB-374) are designed for loading and unloading product into tank trucks and rail-cars. They are often referred to as extended reach loader arms. They are excellent for variable reach applications and can aid in maximizing reach and weight capabilities. The unsupported boom top loading arms (TLB-374) offers an additional pipe section and swivel to provide extreme flexibility at the loading position. A single swivel at the inlet and a spring balanced double swivel at the base allow for up/down and left/right movement. These components achieve a longer reach requirement while minimizing the spring balanced section of arm. An additional swivel at the end of the arm allows the drop tube to stay vertical.
Available in Right Hand or Left Hand, Up Feed or Down Feed and Horizontal Feed Loading configurations.
Extended Reach Loading Arm for Truck and Railcar Applications
The TLB-374 Unsupported Boom Top Loading Arm from Excel Loading Systems is designed for applications requiring extended reach, flexibility, and efficient loading of tank trucks and railcars. Often referred to as an extended reach loading arm, the TLB-374 is ideal for facilities where spotting flexibility and reach limitations are critical.
This model provides increased reach and maneuverability compared to fixed reach arms, making it a strong solution for multi-compartment loading, offset connections, and variable truck positioning.
Key Features of the TLB-374 Loading Arm
- Extended Reach Design
Additional pipe section and swivel configuration allow for greater reach compared to fixed or standard arms. - Unsupported Boom Configuration
Maximizes reach while minimizing weight in the spring-balanced section for improved usability. - Enhanced Flexibility at Loading Point
Multiple swivel joints allow smooth movement and precise positioning during loading operations. - Spring Balanced Operation
Designed for ease of use, reducing operator fatigue and improving control. - Vertical Drop Tube Control
End swivel ensures proper vertical alignment during loading. - Multiple Configurations Available
- Right Hand or Left Hand
- Up Feed or Down Feed
- Horizontal Feed Options
Available Options & Accessories
The TLB-374 loading arm can be customized with a wide range of accessories, including:
- Loading valves
- Cone deflectors
- Drop hoses
- Vapor recovery systems
- Grounding and bonding systems
- Vacuum breakers
- Steam jacket
- Pneumatic or hydraulic balancing
Applications
The TLB-374 top loading arm is commonly used in:
- Tank truck loading terminals
- Railcar loading facilities
- Multi-compartment loading operations
- Petroleum and chemical transfer
- Industrial fluid handling systems
This arm is especially effective where:
- Vehicles are not consistently spotted
- Additional reach is required
- Flexibility at the loading point is critical
Benefits of the TLB-374
- Improved reach compared to fixed reach loading arms
- Increased flexibility for complex loading environments
- Reduced strain on operators due to balanced design
- Adaptable for a wide range of loading configurations
- Suitable for both standard and specialty applications
Materials & Construction
The TLB-374 can be manufactured in:
- Carbon Steel
- Low Temperature Carbon Steel
- Stainless Steel
- Aluminum
Specialty alloys are also available, including:
- Alloy 20
- Hastelloy
All arms are built with heavy-duty construction and industrial-grade coatings to ensure long-term durability in demanding environments.
Customizable envelope
We configure the arm’s working reach, drop length, and rotation stops to match rack height, vehicle variation, and clearances—improving ergonomics and cutting cycle time
Maintenance & support
Each arm includes IOM instructions. Routine checks typically include swivel inspection and lubrication (if applicable), seal condition, counterbalance settings, and visual hardware inspection. Seal kits and common wear items are stocked for quick maintenance.
