Cylinders MRF Machine and Hydraulics specializes in manufacturing Air and Hydraulic cylinders and Piston-Type Accumulators. We produce these cylinders in sizes ranging from 1 1/2" thru 6" bore, with strokes to 36", and accumulators ranging from 10 Cu. in. thru 2-1/2 Gal. All cylinders and accumulators are manufactured with 125 to 5000 PSI working pressures, either to NFPA standards, your print, or custom design, with other sizes and pressure ratings quoted upon request. Since 1991 many of our cylinders have been proudly installed as original equipment on attachments for heavy construction equipment. One of our most common cylinders that started production in 1994 is a 2-1/2" bore, 3" stroke with a double ended 1" rod. This cylinder has recently surpassed a serial number of 13,000 at a rate of over 100 units a month.