Scaling Up to Handle the Big Jobs: Doosan’s New PUMA SMX5100L/LS

When the top shops want to complete complex parts requiring turning and milling in a single setup, they choose one of our PUMA SMX twin-spindle, multi-tasking turn-mill centers: the PUMA SMX2600ST (10” chuck) or PUMA SMX3100ST (12” chuck). But what if you want to move up to the really big workpieces? Great minds really do think alike! Meet the new PUMA SMX5100L/LS, the largest machine in the series to date.

With its built-in size and strength, the PUMA SMX5100L/LS is ideal for aerospace applications such as landing gear components as well as housings for large shafts like those found in the agriculture or oil field industries.

By the Numbers

Just how big are we talking here? For starters, the PUMA SMX5100L/LS has a maximum turning diameter of 32.7” and maximum turn length of 120.1”. Chuck sizes of 15”, 18” and 21” are available for the standard main turning spindle, which features a 49.6 horsepower built-in motor that spins at 2,400 r/min. Also available is an optional gearbox spindle that rotates at 1,500 r/min and outputs an impressive 4,198 Nm (3,096 ft-lb) of torque for heavy-duty applications. The PUMA SMX 5100L/LS also comes with a servo drive, built-in dead center tailstock.

The B-axis milling head features a Capto C8, powered by a 49.6 horsepower motor that rotates at 10,000 r/min. The roller gear cam mechanism that drives the B-axis is backlash-free and highly rigid, outputting B-axis torque of 2,700 Nm (1,991 ft-lb). The clamping torque on the B-axis is a powerful 35,043 Nm (25,846 ft-lb)!

With all that horsepower and torque, you might think there’s a whole lot of shaking going on. Not so. All PUMA SMX models have highly rigid machine construction. For added stability and speed, the Z-axis on the PUMA SMX5100L/LS, in which the carriage moves, is supported by three rows of cross roller linear guideways. This machine is solid.

Fun fact: The SMX LS model removes the tailstock and adds a sub-spindle to the machine. The same options available on the main spindle are available here as well so that you can have matching spindle speeds and torque for right and left spindles.

A Definite Family Resemblance

Like its smaller siblings, the PUMA SMX5100L/LS has a variety of outstanding value-added features. Minimized thermal deformation is achieved by placing sensors strategically throughout the machine, which offer real time measurement and adjustment of the axes. Along with the largest machining space among the same-class machines, the PUMA SMX line comes standard with our famous ergonomic features that enhance operator convenience and efficient maintenance. FANUC 5-axis machining software features, which offer 600 blocks of look ahead and optimized servo acceleration/deceleration, are now built into the PUMA SMX Series control.

The SMX is a fast-growing family in the Doosan lineup. There will be more features available in the 5100 platform in the future, including L, LB, LS and LSB models. To learn more about the PUMA SMX5100L/LS twin-spindle, multi-tasking turn-mill center and other SMX series machines, check out the PUMA SMX Series.

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