Arbor Press Plates (Pair)
Cut out of high strength grade 50-A572 steel plate. These arbor press plates are sold as a pair and are designed to replace the junk cast arbor plates that are prone to shattering under heavy load.
We currently offer 4 different sizes of arbor plates
7.00" X 7.00" X 1.0" Ideal size for factory replacement of the 12 ton Harbor Freight cast arbor plates
8.50'' X 10.00'' X 1.50''
9.75" X 9.75" X 1.50" Ideal size for factory replacement of the 20 ton Harbor Freight cast arbor plates
12.00" X 12.00" X 1.50"
The low cost cast arbor plates that are typical provided with hydraulic presses, often fail under shock loading.
Learn from others and look at the 4th picture above provided by Mud Slayer 2.0 on Pirate4x4.com who was generous enough to provide the story below.
"I was pressing on a bushing using a Harbor Freight 20 ton press with the provided cast arbor plates. I felt the bushing starting to get stiff. about 1/4" left to go I gave one good pull and I heard POW! I felt like I had been punched in the face by a gorilla as the cast arbor plate had just exploded.One of the guys in the shop came over to check on me and said "Dude you're face is bleeding" I had a gash right next to my left eye. I was driven to the Dr. office where I got 8 stitches. I was told I was very lucky I didn’t lose my eye.
When I returned to the shop I was looking at the press and noticed the porous nature of the arbor plates. This was the day I learned about the material properties of Cast Iron."