Excel Loading Systems TLBS-374
- Home
- Loading Arms & Couplings
- Excel Loading Arm Systems
- Excel Loading Systems TLBS-374

The TLBS-374 Supported Boom Top Loading Arm is an engineered top loading solution designed for safe and efficient transfer of products into tank trucks and railcars. It is built for extended reach applications where both flexibility and structural support are required during loading operations.

SafeRack supplies and supports Excel Loading Systems TLBS-374 with expert specification guidance from Regional Area Managers who help you select the right configuration, materials, and end fitting for your terminal. Our team provides assistance with system compatibility, installation requirements, and operational performance to ensure safe and efficient loading operations. Get technical support, lead times, and pricing information in one call.
Excel Loading Systems TLBS-374
Overview
The TLBS-374 Supported Boom Top Loading Arm is designed to deliver enhanced stability and extended reach for industrial loading applications. Unlike unsupported boom systems, this model incorporates a supported structure that reduces stress on the spring assembly and improves long-term durability.
It features an additional pipe section along with multiple swivel joints that provide smooth movement and accurate positioning during loading operations. The inlet swivel is supported with a pillow block, while the base includes a spring-balanced double swivel system for controlled up/down and left/right motion.
Key Features
- Supported boom top loading arm design
- Enhanced structural stability for extended reach
- Reduced stress on spring and swivel components
- Additional pipe section for increased reach capability
- Pillow block-supported inlet swivel
- Spring-balanced double swivel system at base
- Smooth up/down and left/right movement
- End swivel maintains vertical drop tube alignment
- Suitable for truck and railcar loading
- Multiple configurations available (right-hand, left-hand, up-feed, down-feed)
- Horizontal feed options supported
- Designed for high-cycle loading operations
- Heavy-duty industrial construction for long service life
TLBS-374 Supported Boom Top Loading Arm Specifications
| Specification | Detail |
|---|---|
| Model | TLBS-374 |
| Type | Supported Boom Top Loading Arm |
| Application | Truck & Railcar Loading |
| Design Type | Supported Boom Configuration |
| Structure Support | Pillow Block Supported Inlet Swivel |
| Movement System | Spring Balanced Double Swivel |
| Reach Type | Extended Reach |
| Drop Tube Control | End Swivel Vertical Alignment |
| Configuration Options | Right Hand / Left Hand / Up Feed / Down Feed / Horizontal Feed |
| Material Options | Carbon Steel, Low Temperature Carbon Steel, Stainless Steel, Aluminum |
| Specialty Materials | Alloy 20, Hastelloy |
| Operation | Manual Balanced Loading System |
| Use Case | High-cycle and multi-compartment loading |
Source: TLBS-374 Boom Top Loading Arm
Materials of construction
| Component | Material |
|---|---|
| Arm Structure | Carbon Steel/Low Temperature Carbon Steel/Stainless Steel/Aluminum |
| Specialty Alloys | Alloy 20/Hastelloy |
| Swivel Assembly | Industrial Grade Steel |
| Support Structure | Pillow Block Bearing Housing |
| Coating | Heavy Duty Industrial Protective Finish |
| Drop Tube | Steel or Stainless Steel |
TLBS-374 Frequently Asked Questions
The TLBS-374 is used for loading and unloading liquids and other products into tank trucks and railcars. It is designed for applications that require both extended reach and additional structural support to ensure stable and controlled operation.
Unlike unsupported boom models, the TLBS-374 includes a supported structure with a pillow block inlet swivel. This reduces mechanical stress on the arm, improves stability, and enhances durability in high-cycle and demanding loading environments.
Yes, the TLBS-374 is designed for variable reach applications where trucks or railcars may not be consistently positioned. Its multiple swivel joints and extended reach design allow flexible and accurate connection to loading points.
The TLBS-374 can be manufactured in carbon steel, low temperature carbon steel, stainless steel, and aluminum. For more demanding service conditions, specialty alloys such as Alloy 20 and Hastelloy are also available.
Routine maintenance includes inspecting swivel joints, checking seal conditions, verifying counterbalance settings, and performing general hardware inspections. Regular maintenance helps ensure long service life and consistent performance in industrial operations.
Related Products
OPW Engineered Systems B-32-RF
OPW Engineered Systems B-32-RF — Supported Boom Arm (with valve and remote handle)
OPW Engineered Systems C-32-F
OPW Engineered Systems C-32-F — Scissor Type Arm (with valve)
OPW Engineered Systems C32F / GT32F
OPW Engineered Systems C32F / GT32F — Drum & Tote Loading Arms (Mini Arms)
OPW Engineered Systems CTS
OPW Engineered Systems CTS — Compact Torsion Spring (CTS) Hose Loader
OPW Engineered Systems E-32-F
OPW Engineered Systems E-32-F — Single Arm Fixed Reach (with valve)
OPW Engineered Systems G-32-F
OPW Engineered Systems G-32-F — Unsupported Boom-Type Bottom Loader
OPW Engineered Systems LRH-32-F
OPW Engineered Systems LRH-32-F — Long-Range Spring Balanced Hose Loader
OPW Engineered Systems H-32-F
OPW Engineered Systems H-32-F — Scissor Type Arm (without valve)
OPW Engineered Systems B-32-F — Supported Boom Arm (top loading, without valve)
OPW Engineered Systems B-32-F — Supported Boom Arm (top loading, without valve)
OPW Engineered Systems AFH-32-F — A-Frame Hose Loader
OPW Engineered Systems AFH-32-F — A-Frame Hose Loader
OPW Engineered Systems A-32-F — Slide Sleeve Arm (top loading)
OPW Engineered Systems A-32-F — Slide Sleeve Arm (top loading)
OPW Engineered Systems 8000 Series Endura™ DSF — Dual Split Flange Swivel Joints
OPW Engineered Systems 8000 Series Endura™ DSF — Dual Split Flange Swivel Joints
OPW Engineered Systems 3000 Series — General Purpose Swivel Joints
OPW Engineered Systems 3000 Series — General Purpose Swivel Joints
OPW Engineered Systems 1004D3 / 1005E — API Bottom Loading Coupler (previous standard)
OPW Engineered Systems 1004D3 / 1005E — API Bottom Loading Coupler (previous standard)
OPW Engineered Systems J-32-F
OPW Engineered Systems J-32-F — Single Arm Fixed Reach (without valve)
OPW Engineered Systems LBM800
OPW Engineered Systems LBM800 — Liquip Balance Mechanism (Bottom Loading Arm)
OPW Engineered Systems SRH-32-F
OPW Engineered Systems SRH-32-F — Short-Range Spring Balanced Hose Loader
OPW Engineered Systems LRH-32-F
OPW Engineered Systems LRH-32-F — Long-Range Spring Balanced Hose Loader
OPW Engineered Systems VL32F / VSL32F
OPW Engineered Systems VL32F / VSL32F — Vapor Bottom Unloading Arms (EMEA)
OPW Engineered Systems Vapor Recovery Arms
OPW Engineered Systems Vapor Recovery Arms — Piggyback and Dual/Siamese Designs
OPW Engineered Systems 1004D4
OPW Engineered Systems 1004D4 — API Bottom Loading Coupler (current generation)
OPW Engineered Systems CWH Series
OPW Engineered Systems CWH Series — Counterweighted Hose Loader
API Bottom Loading Arm HL32F / HSL32F
The API Bottom Loading Arm HL32F / HSL32F is designed to provide safe, efficient, and reliable bottom-loading operations for petroleum transport vehicles.
LYNX — API Bottom Loading Coupler
The OPW LYNX API Bottom Loading Coupler is engineered to deliver safe, reliable, and efficient bottom-loading operations for fuel terminals, bulk plants, and transport loading facilities.
M-32-F Frame Loader
The A Frame Loader is one of the most versatile loading arm configurations available for liquid and gas transfer operations.
G-32-F Unsupported Boom-Type Bottom Loader
OPW Bottom Loading Arm








