Ballscrew actuator that we ordered through Kiwi Motion looks and performs great. Swiss quality!
Well Specified Linear Actuators
The actuator runs smoother and quieter than previously used actuators. Also, it runs faster from start, so we can drive faster.

Superb service from start to finish
I can just tell Kiwi what I need and I can trust they will go away and sort the right product at the right time.

Well packaged Linear Shafts
Well packaged item, as described and dispatched quickly. Thank you
High Quality Linear Rail and Guides
We received the new components on the Wednesday afternoon and installed them the following morning. Parts were perfect and of great quality!
That you kindly for your assistance, fantastic service you’re running over there!

Rotary Ballscrew / Rotary Ball Spline
SPBR Series
- Linear, rotational, and spiral motion possible
- High accuracy
- Angular contact bearings for rotating section
- High speed rotation
- High load capacity in radial and axial direction
- Large moment load capacity
- Long travel and service life
- High sealing characteristics
- Ground spline shaft
Product Details

SPBR Rotary Ball Screw, Rotary Ball Spline
Introducing the SPBR rotary ball screw, rotary ball spline from NB, a compact, multi-functional linear system designed to revolutionise the way design engineers approach linear motion. This series is an embodiment of our commitment to providing innovative, high load, high speed linear solutions that cater to a diverse range of engineering needs across the UK & Ireland, and beyond.
FEATURES ENGINEERED FOR EXCEPTIONAL PERFORMANCE
Compact Footprint: Compact in form, the SPBR series offers heavy load bearing capacity with smaller dimensions, while offering high speed rotational movement.
Ground Spline Shaft: NB ball splines are precision ground to ensure tight tolerances allowing for smooth, quiet, super accurate linear motion.
High-Speed Rotation: Due to the design of the rotary portion of the SPBR nut utilising angular contact bearings, high rotational motion can be achieved.
High Rigidity: The angular contact bearings, which are aligned in the back-to-back duplex manner means ultra-high rigidity is guaranteed for all applications.
Low Noise: NB pride themselves on offering the quietest, smoothest running ball splines in the industry. With the unique recirculation design in both the spline and rotational sections, a low decibel is realised.
High Accuracy: With accuracy figures of just 6µm/100mm, an NB ball spline will suit even the most demanding precision applications.
Three Motions in One: With linear, rotary, and spiral motion combined into one system, the number of moving parts is reduced compared to a conventional system, saving space and design and installation time.
SPECIFICATIONS TO MEET DIVERSE ENGINEERING REQUIREMENTS
Available Sizes: Available in mm diameters 16, 20 and 25 our SPBR NB rotary ball screw, rotary ball splines are designed to suit a wide array of design specifications.
Kiwi Motion’s Promise of Excellence
At Kiwi Motion, we are dedicated to delivering linear motion solutions that are not only innovative but also reliable and efficient. The SPBR Series rotary ball screw, rotary ball splines are a testament to our commitment to excellence in high accuracy, high speed linear technology, backed by our unwavering focus on competitive lead times, customer service, and technical support.
With Kiwi Motion’s SPBR Series ball splines, engineers and professionals in various industries can now enjoy the benefits of a compact rotary ball spline that brings together speed, precision, and strength in one package. Elevate your projects with the SPBR Series – where cutting-edge technology meets practicality and durability.
What others say about us
High Performing Actuators
Ballscrew actuator that we ordered through Kiwi Motion looks and performs great. Swiss quality!

Well Specified Linear Actuators
The actuator runs smoother and quieter than previously used actuators. Also, it runs faster from start, so we can drive faster.

Superb service from start to finish
I can just tell Kiwi what I need and I can trust they will go away and sort the right product at the right time.

Well packaged Linear Shafts
Well packaged item, as described and dispatched quickly. Thank you
High Quality Linear Rail and Guides
We received the new components on the Wednesday afternoon and installed them the following morning. Parts were perfect and of great quality!
That you kindly for your assistance, fantastic service you’re running over there!

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