Exploded View of an OHMA Cylinder

OHMA® Weld Cylinders

The OHMA Weld cylinder operates using an “air over oil” intensification principle to produce non-shock welding force. This method of operation allows the cylinder to remain compact and provides numerous advantages to resistance welding applications:

• Low impact (non-shock) advance to the work for minimal electrode mushrooming and to help maintain tip alignment
• The ability to produce a wide range of forces (i.e. a 2″ bore OHMA cylinder can produce from 600 to 5000 lbs. of tip force using between 20 and 100 psi air pressure)
• Simple construction and operation to minimize down-time
• Ability to function in any position
• Compact construction to minimize air consumption
• Small bore size to enable multiple cylinders to perform applications with close weld spacing

The standard OHMA Weld Cylinder is supplied in the following range of styles/specifications:

• Bore Size:1-3/4″ to 2-5/8″
• Ratio: 13:1 to 66:1 (nine standard ratios are available)
• Stroke: 1-1/2″ to 6″
• Mounting: a variety of mounting styles are available