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Unveiling the American KURT Vise: How AngLock Corner‑Clamping Technology Redefines Clamping Precision and Rigidity

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News

Time：

2025-09-08

KURT (commonly referred to as “Curt”) vises are a renowned product line under the American Kurt Manufacturing Company, celebrated in the machining industry for their high precision, exceptional rigidity, and innovative design. Below is an overview of some of their key features and product series:

The Core Feature of KURT Vices: The hallmark of KURT vices is their AngLock® jaw design. This innovative design not only generates horizontal clamping force but also produces a downward component, firmly pressing the workpiece against the base. This effectively prevents the workpiece from lifting or shifting during machining, ensuring exceptional process stability.

In addition, the KURT vise offers the following advantages:

High precision and high-quality materials: The clamp body is predominantly manufactured from 550 MPa ductile cast iron, which offers vibration-damping performance more than twice that of steel, effectively absorbing cutting vibrations. Critical precision parameters are tightly controlled; for example, the perpendicularity between the fixed jaw and the clamp body, as well as the positional tolerances of the keyway relative to the fixed jaw, are maintained within extremely tight limits—0.02286 mm and 0.01524 mm, respectively.

“Tightening”‑type design: Some models feature a “tightening”‑type clamp body, with clamping force generated simultaneously by both the moving and stationary jaws. This reduces stress‑induced deformation of the clamp body itself, thereby achieving higher clamping accuracy.

Flexibility and Durability: The moving jaw is typically designed with a slight lateral travel, making it easy to clamp workpieces with imperfect parallelism. The product also emphasizes meticulous details, such as a chip‑guard plate and a large window on the jaw body, facilitating cleaning and maintenance.

Main Product Lines

KURT’s vise product line is extremely comprehensive; the following are some of its main series:

Product Series	Main Features

DX Series

High-precision single-station parallel-jaw vise, suitable for a variety of machining applications, such as the DX150.

3600 Series

The classic single-station parallel-jaw vise is available with Manual (V-type), hydraulic (H-type), and pneumatic (A-type) Various clamping methods are available.

3400 Series

Hydraulic vise with angular clamping mechanism

Double‑station / Multi‑station vise

It can simultaneously clamp multiple workpieces, Improve production efficiency For example, the TL6 series features a “three-in-one” capability, enabling rapid switching among dual‑station, 4‑inch, and 11‑inch single‑station modes.

Multi-axis/5-axis vise & tetrahedral vise

Specifically for Five-axis machining center The design is compact and allows for multi‑directional mounting and positioning, meeting the demands of complex machining operations. A tetrahedral chuck—such as an eight‑station chuck—can provide multiple machining surfaces in a single clamping operation.

Large-opening vise

Suitable for clamping Large, heavy workpieces , with a large jaw opening

Application areas

KURT vises are widely used in numerous precision machining applications thanks to their outstanding performance.

Precision mold manufacturing
Automotive parts machining (such as engine blocks, transmission housings, wheel hubs, etc.)
Aerospace Manufacturing (such as aircraft engine blades and other critical components)
Optical Instrument Manufacturing
Medical device manufacturing