Types of pneumatic torque tools from Pneumatic Wrench Suppliers
Pneumatic torque tools can be divided into two types. The first has a relatively low torque output and is suitable for lightweight joints and components. Technically speaking, these are not pneumatic torque wrenches, but better known as "pneumatic torque screwdrivers". The pneumatic screwdriver always keeps the drive shaft engaged. When the specified torque limit is reached, the clutch will disconnect the power to prevent excessive torque. In a manufacturing environment where every product needs to be tightened strictly to specifications, pneumatic screwdrivers perform well-at least in lighter assemblies where torque values ​​are relatively low and measured in inch pounds (lbf.in) rather than foot pounds (lbf.in) Outstanding. foot).

Heavy-duty manufacturing environments require similar high-speed output, but require higher torque values. In these environments, the most suitable pneumatic torque wrench for this job is actually an impulse tool. Like pneumatic screwdrivers, they provide stable torque control through a gear mechanism. However, they can provide a higher level of torque-more than 330 lbf.ft of torque, while the torque of a pneumatic screwdriver is approximately 95 lbf.ft. If it weren't for the unique mechanism that helped the impulse tool name, it could be enough to cause employees to be injured due to the high torque shut-off response.

Inside the pulse tool is the hydraulic mechanism between the drive shaft and the air motor. When the fastener is loose, the mechanism allows the drive shaft of the tool to rotate freely. When the fastener becomes tight, the hydraulic pressure in the mechanism will increase until it acts on the internal anvil, thereby generating a force. Applying force will lower the hydraulic pressure inside the mechanism, but it will immediately start to build up again. This is a pulse action, the pulse tool gets its name.

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