Rohn BPL45G 45G Top Plate

Top Mounting Plate Designed for 45G Tower Compatibility
The Rohn BPL45G Top Plate provides a solid platform for mounting thrust bearings such as the TB3 or TB4 at the summit of your Rohn 45G tower. It bolts directly to the top of a standard 45G tower section, giving installers a secure and stable base to support masts and rotor systems in both professional and amateur radio setups. Its engineered fit and precision drilling take the guesswork out of top-section customization.

Pre-Drilled to Accept Thrust Bearings for Rotating Mast Systems
This plate comes pre-drilled to accommodate Rohn AB anchor bearings as well as TB3 (2") and TB4 (3") thrust bearings. This feature makes it easy to integrate rotating mast assemblies at the top of the tower for directional antennas or other rotating equipment. By aligning perfectly with these common bearing models, it ensures fast, trouble-free installation with zero modifications.

Raised Legs Offer Space for Rotor and Accessory Installation
The elevated leg design on the BPL45G adds valuable clearance at the top of the tower, allowing space for rotor systems or other mounted equipment. When used in combination with an accessory shelf or rotor plate, this top plate becomes a critical part of a flexible, modular antenna support system. This extra space is especially beneficial for large or multi-element directional antennas.

Supports a Variety of Tower Configurations
Whether you're installing the 45G tower in a guyed, bracketed, or self-supporting configuration (within engineering limits), the BPL45G top plate serves as a universal cap that completes the upper section of your structure. Its bolt-on design ensures secure integration and structural consistency across all tower types as detailed in the Rohn specifications.

Engineered for Strength and Long-Term Outdoor Use
Made from rugged steel and hot-dip galvanized, the BPL45G is built to withstand harsh outdoor environments. The galvanized coating prevents rust and corrosion over time, protecting your installation in all weather conditions. It’s designed to maintain structural integrity while supporting the load from masts and rotating antennas at the highest point of the tower.

Ideal for Antenna, Rotor, and Mast Integration Projects
If your installation requires the addition of a thrust bearing at the top of a 45G tower, the BPL45G provides the fastest and most reliable path to that setup. It gives you a clean finish at the top of the structure while supporting advanced antenna configurations often used in ham radio, broadcasting, and telecom infrastructure.