im trying to match up a cylinder on an old rig. is this the Monarch 30TX08-125 tie rod cylinder and is 648513 the right part number?
Question by: Dwight W on Jan 27, 2026, 8:18 PM
For identification, the key match points are the supplier part number 648513 and the model name Monarch 30TX08-125 Tie Rod Cylinder. If those numbers are what you have on your cylinder tag or paperwork, it lines up with this unit.
Answer by: Customer Support on Jan 29, 2026, 8:13 AM
Is this cylinder the same as part number 648513?
Question by: Ricky M on Sep 3, 2025, 11:52 AM
Yes, this Monarch Industries cylinder is also known as part number 648513. It's a direct match if you're replacing one with that number.
Answer by: Customer Support on Sep 5, 2025, 6:37 AM
what exactly is the 30TX08-125 part number telling me, is that the bore and stroke on this cylinder?
Question by: Stan S on Feb 4, 2026, 3:37 PM
Monarch uses that part number to encode the cylinder's configuration. The "30T" identifies it as a tie rod style unit, "X08" refers to the 8-inch bore size, and "125" indicates a 125-inch stroke. Tie rod cylinders like this one use external rods along the barrel to hold the end caps together, which makes them rebuildable in the field without specialized tooling.
Answer by: Customer Support on Feb 6, 2026, 9:32 AM
