Product Description

Key Benefits At-a-Glance

TOPBALL products incorporate many features not found on conventional bushings, including:

Self-aligning load plates

To avoid problems caused by mounting or machining errors, or by shaft deflection, TOPBALL load plates feature tapered ends that compensate for slight misalignments. This ensures more accurate performance with fewer adjustments when installing the product.

Floating seals

A floating seal helps maintain alignment while also ensuring the TOPBALL load plate remains consistently in contact with the shaft. Best of all, this is done without affecting the shape or length of the bushing, making TOPBALL bearing and linear pillow blocks suitable for miniaturized designs.

Adjustable clearance

Configure the TOPBALL linear ball bushing bearing to the specific requirements of your application by using its adjustable load plates to set the desired clearance level between ball and shaft components.
Together, these unique features provide TOPBALL linear pillow block bearings with many key benefits, including:

Longer travel life

Likewise, higher load capacities also translate to longer travel life. Compared to conventional linear ball bushings, TOPBALL products offer up to 27 times the travel life.

Higher load capacity

The precisely ground load plates allow TOPBALL to deliver rated capacity up to three times higher than conventional linear ball bushings.

Higher speed

TOPBALL is suitable for use in many high-speed applications, including systems moving at up to 3m/s.

For more information about the benefits of choosing TOPBALL plastic linear bearings for your application, contact an NB representative directly.

Available Configurations

A diverse range of products supports potential applications for TOPBALL linear ball bushings. TOPBALL series are available in metric (TK) and imperial (TW) configurations. Both include conventional closed- and open-type linear bushings, as well as the TOPBALL pillow block unit design, which optimizes performance to a specific bore tolerance.

Mounting and Maintenance

TOPBALL products have many mounting options. TK-type units should be press-fitted onto the housing bore, without applying excessive force or shock loading. TW-type TOPBALL components offer various mounting methods according to the intended application.

You can use NB TOPBALL linear pillow block bearings with high-precision shafts and housings. Variances in surface roughness, hardness and diameter will all affect performance and potentially reduce travel life. Please consult product literature for recommended tolerances and other installation requirements.