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| NB TOPBALL is a linear motion mechanism utilizing the rotational motion of ball elements. NB's uniquely designed precision ground load plate provides circular arch contat to the ball element resulting in greater dispersion of the load, enabling TOPBALL to provide up to 3 times the load capacity and 27 times the travel life of conventional slide bushings. NB's self-aligning TOPBALL meets high speed requirements up to 180m/min or 118in/sec, and can be designed into many different applications such as factory automated equipments, machine tools, industrial machines, electrical equipment, optical instruments. | |
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| The NB TOPBALL uses a round shaft for the guide, resulting in effective space utilization, which allows for compact designs with high load capacity and longer operational life. Moreover, it is available in open and closed types as well as unit types with clearance adjustable, which make it suitable for various types of installations. TOPBALL also comes in inch and metric dimensions. | ||||||||||||
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>> TW Type - closed type - | |||||||||||
| The TW TOPBALL is the standard inch series closed type with options such as anti-corrosion and floating rubber seals. Combination of precision ground load plates with resin outer cylinder makes light weight and quiet operation. | ||||||||||||
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>> TW-OP Type - open type - | |
| This is the open type of TW TOPBALL. Open type allows the use of continuously supported rail assembly to eliminate shaft deflection. | ||
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>> TWA & TWA-W Type - closed block - | |||||||||||
| TWA is the standard closed TOPBALL in Aluminum housing for easy installation. With grease hole on the housing, lubrication is simplified as well. TWA-W is double wide unit with two closed units inside for increased load capacity. Wide unit also comes with oiled lubrication felt units in between two bushings for long lasting lubrication. | ||||||||||||
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>> TWJ & TWJ-W Type - closed adjustable block - | |
| Clearance adjustable TWJ unit allows easy adjustment with a screw for proper shaft adjustment+. Also available in double wide units with oiled lubrication felts. | ||
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>> TWD & TWD-W Type - Open block - | |
| TWD open type units have open type TOPBALL in clearance adjustable aluminum housing. Best used with our WSS support rail assembly or LWA low profile support rail. Also available in double wide units with oiled lubrication felts. | ||
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>> TK Type - closed type - | |
| This is the metric size TOPBALL, standard in European market. It is built with precision ground load plates, engineered resin outer cylinder, and floating seal that provides high dust prevension while allowing self-alighnment. | ||
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>> TK-OP Type - closed type - | |
| This is the open type TK intended for use with bottom supported rail assembly to eliminate shaft deflection. | ||
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>> TKA & TKA-W Type - closed block - | |||||||||||
| TKA is the Euproean standard TOPBALL unit with TK closed type bearing inside the aluminum housing. Lubrication hole is built in the housing for easy replenishment. Also available in double wide units with oiled lubrication felts. | ||||||||||||
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>> TKE & TKE-W Type - open block - | |
| Open, non-adjustable TKE unit is ready to be installed with support rail assembly. Also available in double wide units with oiled lubrication felts. | ||
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>> TKD & TKD-W Type - open adjustable block - | |
| Clearance adjustable TKD unit allows easy adjustment with a screw for proper shaft fitment. Also available in double wide units with oiled lubrication felts. | ||
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| NB's TOPBALL lineup can be seen below. Please refer to the PDF catalog on the Catalog page for more detailed information about each product. 2D and 3D CAD files for TOPBALL can be found at Downloads page. |
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| * Click each name or image, Part number structure can be checked. |
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TW closed type with or without seals |
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TW-OP open type with or without seals |
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TWA closed single unit with or without seals |
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TWA-W closed double wide unit with or without seals |
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TWJ adjustable single unit with or without seals |
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TWJ-W adjustable double wide unit with or without seals |
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TWD open single unit with or without seals |
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TWD-W open double wide unit with or without seals |
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| * Click each name or image, Part number structure can be checked. * For details, please refer to the PDF catalogs on the Catalog page. |
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| TK closed type with or without seals |
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TK-OP open type with or without seals |
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TKA closed single unit with or without seals |
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TKA-W closed double wide unit with or without seals |
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TKE open single unit with or without seals |
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TKE-W open double wide unit with or without seals |
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TKD adjustable single unit with or without seals |
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TKD-W adjustable double wide unit with or without seals |
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| When choosing linear system products, it is necessary to calculate elements such as load-bearing and accuracy, taking into consideration the type of machinery and environment in which the system will be used. Please refer to the Engineering Information page regarding technical calculations. | ||
| >> Go to Engineering Information | ||
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| Copyright (C) 2009 NB Corporation of America. All rights reserved. | ||
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