Flint Machine Tools

HR-40

The HR-40 Precision Lathe is a heavy-duty engine lathe known for its reliability and enduring performance in machine shops. Often referred to as The Workhorse of its class, this machine is available with a 40-inch swing over the bed and various center-to-center distances starting at 80 inches. The core of the HR-40 is a strong, rigid headstock housing a hardened and ground main spindle with a 409-inch spindle bore and D1-11 Camlock spindle nose. The spindle is supported by a three-point bearing system to ensure superior cutting capability and accuracy even in heavy-duty applications. Power is supplied by a standard 20 HP main drive motor providing high torque and a wide range of 16 spindle speeds from 8 to 800 RPM, with optional modifications available for higher or lower RPMs. The unique rib structure of the 22-inch wide bedway is constructed from high-quality casting with hardened and ground ways to ensure exceptional stability and precision. Operational efficiency is enhanced by standard features including a 4-way rapid traverse, a 2-speed drive tailstock quill, a coolant system, and a pull drawer chip pan. The totally enclosed gearbox features hardened and ground gears, allowing for a wide selection of inch and metric module and diametrical pitch threading options. The HR-40 is the ideal solution for tackling large and long workpieces with unmatched precision and power.

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Description

The Kingston HR-40 Heavy Duty Precision Lathe is the industry workhorse engineered for superior power and accuracy on large workpieces. Featuring a robust 40-inch swing over the bed and a generous 409-inch spindle bore, this lathe is built on a 22-inch wide hardened and ground bedway. Driven by a powerful 20 HP motor, it offers 16 spindle speeds ranging from 8 to 800 RPM, making it ideal for demanding heavy-duty machining and fabrication applications.

Swing Over Bed 40″
Swing Over Cross Slide 31.0″
Swing Over Gap (up to C.C. 160″ only) 51.5″
Distance Between Centers 80″/120″/160″/200″/240″/280″/320″
Width of Bed 22″
Height from Floor to Work Center 51.5″
Spindle Bore 4.09″
Taper of Spindle Bore & Center ASA #450 x M.T. #6
Type of Spindle Nose D1-11
Number of Spindle Speeds 16
Spindle Speed 8-800 RPM, 12-1200 RPM (option)

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