Farnsworth Engineering Company
Custom Engineering & Hydraulic Cylinders



Marion M-Line Small Bore Telescopic Cylinders

The old adage, "a chain is only as strong as its weakest link," certainly applies to your hydraulic system... and especially to the welds on cylinders. That's why inertial welding is used in the heads and stops of these tough little units.

Inertial welding is a technique that forces a rapidly spinning part against a stationary part. The resulting friction welds the two parts together without the addition of filler metal. Inertial welding is unsurpassed for strength and consistency.

  • Modern manufacturing equipment includes inertial welders, centerless grinders, automatic turning lathes and other supporting machines.
  • Delivery is FAST. Many cylinders are stocked for immediate shipment.
  • Design assistance. Tell us about your needs, and we'll help develop the right cylinder for your system.
  • Primary components are manufactured to strict quality standards.
  • Every cylinder is subjected to rigid performance tests to assure reliability.
  • Self-adjusting seals reduce maintenance costs and downtime.


A heavy, 15/16" thick machined steel base prevents ballooning. "J" grooving the weld joint provides for full weld penetration and maximum strength.

Costs less...

High pressure design and the use of inertial welding construction can reduce the size of the cylinder, pump and reservoir. This reduces weight and initial cost and keeps on saving over the life of the equipment.

Choice of mounting styles

We offer cross-tube and lug mounts on the base of these cylinders. Welded trunion mounts are available on the main sleeve.

Stops and seals

Internal rings on the cylinder walls provide positive stops for each stage of extension to prevent damage to the bearings and sleeves when the cylinder is fully extended.

Self-adjusting, long-lasting urethane seals provide excellent sealing under high or low pressure. A rubber expansion ring is imbedded between the sealing lips to provide a constant force at the seal surface. This fives a positive seal without the need for continual adjustment.

A square wire lock retaining ring eliminates the need for a threaded cap and permits the cylinder's sleeve to collapse to its minimum closed length.

Farnsworth Engineering Company
313 Smith St., East Liverpool, Ohio 43920
(330) 385-1745 tel., (330) 385-1443 fax