Turning Center Has Stiffness and Rigidity for Heavy Cutting

The SL8-II has robust roller guideways and six roller bearings for accuracy and heavy cutting.

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Milltronics USA Inc. has new SL-II Series which it says are fast, accurate and affordable slant-bed CNC lathes. They feature Milltronic’s Series 9000 CNC control, which can be programmed conversationally or with industry standard G & M codes.

These turning centers from Milltronics have robust roller guideways for accuracy and heavy cutting. They also feature Yaskawa Sigma V servo motors and drives and doublenut pre-loaded ballscrews that are pre-tensioned and anchored on both ends. SL-II Series spindles are manufactured by Royal and feature six rows of bearings. They are permanently grease packed with two rows of roller bearings up front, two rows of ABEC Class 7 P4, preloaded angular contact bearings mounted behind and in back. Two additional rows of roller bearings provide stiffness and rigidity for heavy cutting.

The 8" chuck machine is called the SL8-II. This model has 4,000 rpm, an 8", 3-jaw hydraulic chuck standard and a generous 3.2" spindle bore. It has a 22 hp AC spindle motor with a Yaskawa drive. Rapid traverse rates are 1,181 ipm. Max part diameter is 14" and max part length is 20.7." Standard with a bi-directional 12 tool turret, it uses 1" x 1" shank tooling and max boring bar size of 1.50".

All models are available with optional programmable quill tailstocks, Renishaw pre-setters, lift-up chip conveyors, bar feed interface, parts catchers and/or collet chucks. The Series 9000 control runs on an Intel Dual Core i5 64-bit processor and offers 4 GB memory, 120 GB disk storage, 2 USB ports and an enlarged 15" LCD color touch screen. An optional feature for the Series 9000 is Milltronics Shop View (MSV), which allows users to access machine status and collect usage and diagnostic info per Industry 4.0. MSV is hosted in the cloud and can be accessed with a PC, tablet or smartphone.