OHMA® Weld Cylinders

The OHMA Air Over Oil 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 while providing numerous advantages to resistance welding applications:

• Low impact (non-shock) advance to the workpiece for minimal electrode mushrooming and to help maintain tip alignment
• The ability to produce a wide range of forces (e.g. 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 downtime
• 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® Air Over Oil Weld Cylinders are supplied in the following range of sizes and specifications:
 

Bore Size		OHMA® Weld Cylinder
(in)	(mm)	Force Multiplier	Max. Force* (lbs)	Max. Force* (kg)	Force Multiplier	Max. Force* (lbs)	Max. Force* (kg)	Force Multiplier	Max. Force* (lbs)	Max. Force* (kg)
1.75	44.5	13:1	1300	589.7	19:1	1900	861.8
2	50.8	22:1	2200	997.9	32:1	3200	1451.5	40:1	4000	1814.4
2.625	66.7	37:1	3700	1678.3	49:1	4900	2222.6	66:1	6600	2993.7

* Maximum Force calculated using 100 psi air pressure

Refer to the documentation below to learn about available strokes and cylinder mounting styles or contact us.

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