This A131 - Large Extra Heavy Duty 3 Prong Commercial Tire Swivel has a universal joint and 3 prongs to help prevent chains from tangling. Our extra heavy duty commercial tire swivel has a top plate for added strength and a rubber boot to prevent fingers from being pinched. The top plate has four holes for attaching to a wood beam. The plate is 5 ½ ” long and 5 1/2” wide with four 3/8” holes that are 3 ½ ” center to center. The entire swivel is 9” long. It hangs down 8 1/2" from pipe. Holes are round not oblong. Powder coated in a bright red finish. This product should last 2 years in harsh conditions and up to 5 years in optimal conditions. Some conditions may require replacement sooner. Tensile strength 5000 lbs.
**Installation, Safe Use and Maintenance Instructions**
Installation: Tire Swivel must be installed in a bay without any other components. For tire swings, extend surfacing in a circle whose radius is equal to the height of the suspending chain or rope, plus 6 feet in all directions. Place tire swivel on wood beam and mark holes with pencil or pen on wood. Drill four 3/8” holes. Then, place top plate on top of wood beam and line up on drilled holes. With the head of ½” bolt starting on top of top plate and going down towards ground, put bolt through top plate, through wood and through hole on plate with swivel. The length of 3/8” bolts will vary, depending upon thickness of the wood. Secure with a 3/8” nylock nut. (Bolt and nuts are not included.) Put bolts through beam so that nuts are on the bottom of top beam, and so that the bolt is attached with no more than two thread showing beyond the nut. This will prevent a protrusion on the top beam. Check to see bolts are straight and nuts are tight. Repeat this process with all four bolts.