MGN Miniature Linear Guide

The product photograph shows an MGN15C carriage mounted on its rail. Four threaded holes are accessible from above, while black end caps sit at either end of the metal body. The rail continues through the carriage, allowing the moving component to follow the rail without needing a guide body as long as the required travel.

Inside the MGN Miniature Linear Guide, balls roll between the loaded raceways and circulate through return passages in the carriage. The end caps form part of that circulation system. Their length is therefore included in the overall block dimension and must be allowed for when positioning nearby brackets or travel stops.

For the illustrated MGN15C, the catalog gives an overall length of 42.1 mm and a metal-body length of 26.7 mm. Using only the shorter dimension when laying out a moving plate would overlook the end assemblies. The complete block weighs 0.059 kg before the fixture and its fasteners are added.

The mounting face has four M3 threaded holes arranged on a 25 × 20 mm pattern. Thread depth is listed as 4 mm. This gives the adapter designer a specific fastening interface: screw length must account for the plate thickness and the available engagement, rather than being chosen from the M3 diameter alone.

The rail stays fixed; the mounting plate travels with the block

On the MGN15 size, the rail is 15 mm wide and 10 mm high. Its mounting holes repeat at a 40 mm pitch and accept M3 mounting bolts. The recessed holes shown in the photograph allow the bolt heads to sit within the rail profile, clear of the carriage's travel path.

The MGN Miniature Linear Guide is intended to be attached to a supporting machine surface. That surface establishes the rail's installed position, so dirt or burrs beneath the rail can affect the assembled guidance even when the individual components are correctly sized. The exposed rail also needs protection from debris generated by the surrounding process.

MGN15C has published basic dynamic and static load ratings of 4.61 kN and 5.59 kN respectively. These ratings describe the bearing arrangement; they are not a direct kilogram capacity for any plate attached to it. A tool projecting beyond the block introduces a moment that must also be checked against the catalog.

The MGN Miniature Linear Guide family includes smaller sizes down to MGN5C, plus extended H carriages in sizes 7, 9, 12 and 15. The photograph represents the standard MGN15C version. Replacement parts should follow the full model and matching rail specification, rather than being identified only by a similar-looking mounting face.

About Us

Guangyuan supplies MGN rails and carriages in standard sizes and customer-specified configurations. Rails and blocks can be supplied separately, and drawing-based OEM/ODM enquiries are accepted for application requirements.

For a rail order, specify the finished length and mounting-hole arrangement, including the distances from the rail ends to the nearest holes. For assembled supply, identify the full carriage model and number of blocks per rail. Material, preload and accuracy requirements should be confirmed with the selected configuration.

The minimum order quantity is 10 pieces for guide blocks or 10 lengths for rails. Rail and block quantities should be listed separately rather than described only as a number of sets.

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