Miniature Profile Ball Rail Design Considerations

EMBEDDED INVERSE HOOK DESIGN FOR REINFORCED MECHANICAL INTEGRATION

When the runner block is in motion and changing direction, the circulating stainless steel balls inside the raceway generate empact force against the plastic end cap. As the demand for rapid motion in the automation industry has increased, Nook has invented a new design to improve high speed running capability. Plastic inverse hooks for miniature linear blocks tightly secure block components to handle the impact force effectively by distributing the applied stress over a large area.

UNIQUE BALL RE-CIRCULATION DESIGN

The stainless steel ball re-circulation hole and channel constructs are fully sealed by plastic frame and end caps. The simple structure substantially reduces contact surface between steel ball and metal, thus reduces noise significantly. The lubrication oil storage embedded in the circulation channel significantly extends the re-lubricating interval, extends life and reduces preventative maintenance.

Suitable for:

  • High speed belt driven mechanism
  • High speed carrier design
  • Automation linkage between stations
  • NMR-EE SERIES STAINLESS STEEL REINFORCED PLATES ENSURE HIGH ROBUSTNESS

    Runner blocks are equipped with two stainless steel plates which reinforce the end-cap from end to end. This sturdier design supports higher running speeds. The plates can also function as scrapers to facilitate smooth travel.

    LUBRICATION STORAGE DESIGN

    Lubricant injection holes are featured at both ends of the runner block. As the balls circulate during movement of the block, the stainless steel balls carry lubrication oil to the raceway, thus efficiently lubricating the balls and the oil raceway, and achieving long-term, maintenance-free linear motion. This design also provides superb lubricating ability for short stroke movement. A newly-invented embedded lubrication pad design provides a selection of options for machine design.

    (3M / W, 5M / W, 7M / W, 9M / W, 12M / W, 15M / W)

    HIGH LOAD AND HIGH MOMENT CAPACITY

    The NMR Miniature Linear Guide series is designed using two rows of recirculating balls. The design uses a Gothic profile with a 45° contact angle to achieve equal load capacity in all directions. Within the restriction of limited space, larger stainless steel balls are used to enhance the load and torsion resistance capacity.

    Nook linear guides (indicated with the thick black line to the right) provide greater surface contact as compared to competing products (indicated with the thin red-dotted line at right) when comparing same widths rails.

    DUST PROOF DESIGN

    Our standard design comes equipped with an end seal that effectively restricts dust contamination and prolongs lubrication, ensuring longer product life. Specially-designed low friction seal lips do not affect running smoothness.

    Figure 1