Tie Down Engineering 86121 Adjustable Keel Roller Bracket Assembly, Galvanized Steel

The Tie Down Engineering 86121 is a complete adjustable keel roller bracket assembly built for boat trailers. Unlike a bracket sold alone, this part number includes the roller, roller shaft, mounting bolts, and lock nuts, giving you everything needed to support and align the keel of your boat during loading, launching, and transport in a single package.

The bracket itself is a one-piece design formed from heavy duty hot dip galvanized 11-gauge steel, which resists rust and corrosion in both freshwater and saltwater environments. The bracket features slots that accept 7/16 inch or 1/2 inch diameter bolts and allow vertical roller adjustment, so the keel roller height can be set to properly position and support the hull as the boat is winched onto the trailer. The assembly is compatible with roller shafts of 1/2 inch or 5/8 inch diameter.

The included rubber keel roller mounts on the adjustable bracket and is designed to spin freely once installed. For the longest roller life and smoothest operation, hardware should be tightened securely while still allowing the roller to rotate freely; overtightening can cause premature roller wear. This assembly is intended to mount on the trailer tongue or crossmember to provide reliable, adjustable keel support.

Specifications

• Brand: Tie Down Engineering
• Manufacturer Part Number: 86121
• Material: Galvanized steel bracket, rubber roller
• Bracket Gauge: 11 gauge steel
• Bracket Construction: One-piece, hot dip galvanized
• Bolt Slot Size: Accepts 7/16 inch or 1/2 inch diameter bolts
• Roller Shaft Diameter: 1/2 inch or 5/8 inch
• Adjustment: Slotted bracket provides vertical roller adjustment
• Included Components: Bracket, roller, roller shaft, mounting bolts, and lock nuts
• Length: 11.50 inches
• Width: 2 inches
• Roller Color: Black
• Hardware Material: Zinc
• Fastener Type: Bolt and nut
• Tensile Strength: 800 pounds
• Weight: 3.42 pounds
• UPC: 081628861211

Frequently Asked Questions

What is included with the Tie Down Engineering 86121? The 86121 is a complete assembly that includes the adjustable galvanized panel bracket, a rubber keel roller, the roller shaft, mounting bolts, and lock nuts, so no additional hardware is needed to install it.

Is the 86121 bracket adjustable? Yes, the bracket used in the Tie Down Engineering 86121 assembly has slots that provide vertical roller adjustment, allowing the roller height to be set for proper keel alignment and support.

What size bolts does the 86121 bracket accept? The bracket slots on the Tie Down Engineering 86121 accept bolts of either 7/16 inch or 1/2 inch diameter.

What roller shaft diameter works with this bracket? The Tie Down Engineering 86121 assembly is designed for roller shafts of 1/2 inch or 5/8 inch diameter.

What material is the 86121 bracket made from? The bracket is a one-piece, heavy duty hot dip galvanized 11-gauge steel design, chosen for corrosion resistance in marine environments.

How much does the 86121 keel roller bracket assembly weigh? The complete Tie Down Engineering 86121 assembly weighs 3.42 pounds.

What are the dimensions of the 86121 assembly? The Tie Down Engineering 86121 measures 11.50 inches in length and 2 inches in width.

Does the 86121 include the roller, or just the bracket? The 86121 is the complete roller and bracket assembly, not a bracket-only part; it comes with the rubber roller, shaft, and mounting hardware already paired with the galvanized bracket.

How should the hardware be tightened during installation? Hardware on the Tie Down Engineering 86121 should be tightened securely while still allowing the roller to spin freely; overtightening can cause premature roller wear.

Where does the 86121 bracket assembly mount on a trailer? The 86121 bracket is designed to mount on the boat trailer tongue or crossmember to provide adjustable keel support during loading, launching, and transport.

What hardware material is used on the 86121 assembly? The mounting hardware included with the Tie Down Engineering 86121 is zinc, paired with a bolt and nut fastener type.

What is the tensile strength of the hardware used with the 86121? The fastener hardware associated with the Tie Down Engineering 86121 assembly has a rated tensile strength of 800 pounds.