Apex Precision Mechatronix Pvt. Ltd. Offers Linear Motion Bush Case Unit. Apex Precision Mechatronix Pvt. Ltd. Supplies Linear Motion Systems, Pneumatic Products, Gears, Racks & Pinions, ACS Motion Control, Safety Couplings, Precision Locknuts Locking Elements, etc. Apex Precision Mechatronix Pvt. Ltd is ISO certified company. The Linear Motion Bush Case Unit of SC Type is a case unit with the standard linear bush installed in a small and light aluminum case. Installation is possible simply by bolting to a table.