Heavy-Duty Rotary · ULTR B
Heavy-duty rotary ball spline combines linear travel and rotation. Evaluate the spline and rotary support bearing independently.
Structure & Application Boundaries
Heavy-duty rotary ball spline combines linear travel and rotation. Evaluate the spline and rotary support bearing independently.
Selection Inputs
Shaft and housing envelope, nut retention / flange dimensions, shaft length, travel, radial load and load direction, torque, speed, duty cycle, accuracy, preload and lubricant/environment.
Product & Configuration

Reference product photo. Files apply only to their named configurations.
Catalog Models
| Model | Shaft d / OD D (mm) | C (N) | C₀ (N) | Details |
|---|---|---|---|---|
| ULTR 16B | 16 / 52 | 6120 | 11200 | View model → |
| ULTR 20B | 20 / 60 | 8900 | 16300 | View model → |
| ULTR 25B | 25 / 72 | 12800 | 23200 | View model → |
| ULTR 40B | 40 / 108 | 30800 | 37500 | View model → |
| ULTR 60B | 60 / 134 | 47700 | 79500 | View model → |
Data source: UVT Catalog 2024. Confirm mounting geometry, accuracy and preload against the exact drawing before ordering.
Selection Guides & CAD Requests
Guides are general reference PDFs. Request 2D / 3D CAD for your exact configuration.
Complete Model Code
Select series and size; L long nut or A hollow shaft only where offered; C nut count; R shaft length; T0 clearance, unmarked standard or T1 light preload; accuracy and S1/S2 mating identification. Confirm available suffixes against this series drawing.
Mounting & Lubrication
Check alignment and mounting datums, spline/screw engagement and support-bearing loads. Obtain the series-specific lubrication and maintenance specification.
Special materials, cleanroom, vacuum and dry-running suitability require individual review.
Related Equipment
- SCARA θ-axis
- Rotary indexing heads
- Packaging machinery
- Screw-driving robots