Hydraulic Workholding Enables Choice of Preferred Clamping Method

Kurt Workholding’s KHU6 hydraulic unit has both single- and double-acting capabilities, enabling the user to choose a preferred clamping method.

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Kurt Workholding’s KHU6 hydraulic unit has both single- and double-acting capabilities, enabling the user to choose a preferred clamping method. The single-acting method uses hydraulic clamping and spring return for unclamping. The double-acting capability uses both hydraulics to clamp and unclamp for a faster, more precise setup.

Switching between single and double acting requires simply changing out the brass breather fitting with the supplied hydraulic fitting. The system is available as a retrofit for existing vises and will come standard on all of Kurt’s 6" hydraulic vises for the HDH690, HDH691, 3600H, 3610H, 3630H, XL6H and XL6HR models.

The KHU6 uses 3,200 psi of operating pressure, which provides a 0.25" stroke and 7,200 lbs of clamping force. Hydraulic vise actuation provides clamping consistency and improved part quality. Clamping speed is also significantly faster than manually closing and opening vise jaws, saving hundreds of hours over the course of a year, the company says.

The hydraulic unit is a direct replacement for the 36BHU hydraulic system, which has been removed from the company’s offerings.