The TOPBALL series is a self-aligning linear motion mechanism using ball elements for high-load, high-speed applications, with a maximum speed of 5 m/s. It features load plates that provide circular arch contact to disperse load, offering up to three times the load capacity and 27 times the travel life of conventional slide bushings. The floating seal design maintains consistent shaft contact without increasing overall length. Load plates float within the outer sleeve to compensate for misalignment caused by machining errors or shaft deflection. It is available in metric and inch series, with TK and TW types designed for press-fit mounting into housings. Shaft diameter tolerances for TMF and TMA types match Asian Metric Slide Bush g6 tolerances. Surface roughness of shafts must be Ra 0.4 or less and hardness 58 HRC or more for optimal performance.
The TOPBALL linear motion mechanism is a self-aligning high load capacity linear ball bushing incorporating many unique features that make it an excellent choice for a wide range of applications. TOPBALL linear ball bushings are often used in automated factory equipment and industrial machines, optical and measuring instruments, and any other application that requires precision, light weight and low cost.
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.
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.
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:
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.
The precisely ground load plates allow TOPBALL to deliver rated capacity up to three times higher than conventional linear ball bushings.
TOPBALL is suitable for use in many high-speed applications, including systems moving at up to 3m/s.
| NB Corporation of America | |
|---|---|
| Product Category | Linear Bearings |
| Product Number | TOPBALL® Series |
| Product Name | High Load Linear Bushing |
| Bearing Type | Bushing (Ball) |
| Special Bearing Materials | Corrosion Resistant. |
| Bearing Housing | Flanged; None; Rectangular; Pillow Block |
| Open Closed - Bushing | Open; Closed |
| Bearing Width | 0.3740 to 6 inch (9.5 to 152 mm) |
