Swivel Chair Replacement Parts
Most Gas Columns in 5 star Office swivel chair bases are removable.
Only a very few 4 star Office base columns are removable. When replacing
a Column in a Gas office swivel chair, the column diameter when measured
midway at it's length (height) must be the same as the replacement. It will
be either 1 3/4" (45mm) or 2" (50mm). No others are available!
Many Manual columns in 5 star Office swivel chairs are removable but none from 4 star Office bases.
Removing both a Gas 
or Manual Column are identical in proceedure.
After removing the base from either a Gas or Manual height adjustment office swivel chair, squirt a shot or two of WD 40 at the underside of the base where the Column protrudes out the bottom. Aim where the Column and Base meet. Turn Base over and repeat at the topside of the Base and Column. The WD 40 must run down entering the tight fitting tapered joint to facillitate removal. Do this by sharply striking the side of the Column from 4 directions using a short length of 2" X 4" (14" to18" will do very nicely). The idea is to "Shock" the Column setting up a vibration which will permit the WD 40 to run into the joint. Set the Base and Column aside for 5-10 minutes to permit the fluid to penetrate into the joint.
Then, with the Base with Column underside facing you, lay the 2 X 4 flat on top of the protruding piece of the Column, strike repeatedly with medium/hard blows. Nine out of ten can be removed in this manner...sooner or later. If you have a Ten, purchase a new Base with included Column.
It is highly recommended to replace the Style #108 Bearing Kit whenever removing the base, column or gas cylinder. Should a replacement be needed, the #108 kit if ordered separately does not meet our required $20.00 minimum merchandise purchase. (each kit includes the schematic)
