4" FTC Aluminum Omni Wheel With 8mm Bore

This is our 4" aluminum omni wheel. This wheel features the 8mm center bore with 4-hole pattern used in multiple building systems used in FIRST Tech Challenge.

Specifications: 

• Diameter: 3.96 inches
• Width Across Middle: 0.375 inches
• Bore: 0.315"
• Bolt Pattern: Four 0.157" holes on a 0.630" circle.
• Body Material: Aluminum
• Load Capacity: 50 pounds (rollers do not spin past this weight)
• Weight: 0.412 pounds
• Number of Rollers: 9
• Roller Material: Black SBR rubber
• Roller Bearing Material: Brass
• Roller Axle: Steel dowel pin
• Roller Diameter: 3/4 inch
• Roller Durometer: 80A
• Repairable by removing perimeter #10 screws

Included Hardware:

• One - 4" Aluminum Omni Inner Plates
• Two - 4" Aluminum Omni Outer 8mm Hub Plate
• Nine - Black SBR Rollers
• Nine - 1x1/8 Steel Dowel Pins
• Eighteen - Omni-roller Sleeves
• Six - Individual #10-32 x 3/8" Button Head Phillips Screws
• Six - #10-32 Pem Nuts
• One - FTC Wheel Conversion Plate
• Six - Individual #10-32 x 5/8" SHCS