The life of a linear system is expressed in terms of the distance traveled. Therefore, the life of a linear system is calculated reversely by using the allowable load that achieves a certain travel distance. This allowable load is called the basic dynamic load rating. The basic dynamic load rating is defined as a constant load in weight and direction that can achieve a travel distance of... (read more)

At NB, our Spindle Units are meticulously crafted to exceed even the most rigorous standards, ensuring unparalleled precision and reliability. Our renowned shaft series has not only become a staple in general industrial machinery but has also elevated the performance of semiconductor fabrication systems and specialized equipment. To guarantee exceptional durability, we utilize high-carbo... (read more)

“Bearings housed in carriages and tables can ride on round shafts or square profile rails. Here’s a look at the advantages of each when an application demands guided linear motion.”

Engineers faced with a linear-motion application often turn to pre-engineered linear bearings and guides. But linear guides come in two basic shapes – round and square – a... (read more)

NB Corporation's EXRAIL® linear guide has more rollers in less space than other linear bearings, which increases load capacity and disperses the load more evenly. It has longer rollers for greater contact surface and less contact pressure.
In comparison to presently available linear guides, the EXRAIL® slide guide provides smoother movement. It uses multiple small diameter n... (read more)

The rigidity of a linear system must be taken into consideration when it is to be used in high-precision positioning devices or high-precision machinery. Preloaded slide guides and ball splines, which use balls as the rolling elements, are available upon request to meet the need for greater rigidity. If a force is applied to the ball elements without preload, an elastic deformation propo... (read more)

The Innovative anti-cage creep STUDROLLER™ System developed by NB - Nippon Bearing eliminates cage creep completely.

The NB NV and NVT types crossed roller slide guide and table comprise precisely ground rails and R-retainers with built-in STUDROLLERs and precision rollers. The rails have been optimally designed so that the STUDROLLERs move smoothly, and the STUDROLLERs and... (read more)

Can a bearing be used for both Linear and Rotational motion? (read more)

NB ball splines are comprised of a shaft and nut assembly. Ball spline shafts feature raceway grooves. Nut assemblies consist of an outer cylinder, retainer, side rings and ball elements. This type of configuration offers many advantages, including:

• Reliably smooth motion with specially designed spline nut and shaft
• High load capacity and long travel life are...

The INCH Miniature SLIDE BUSH provides tremendous advantages. The sizes just added are the most popular dimensions of 1/8", 3/16" and 1/4". Metric sizes of 3, 4 and 5mm are also available. Applications ranging from instruments to computers, NB's performer provides exceptional precision and highly accurate linear movement. We are confident that these new products will meet if not exceed y... (read more)

Linear motion bearings are bearings that are made to move in a particular direction, and they come in a wide array of different designs. Some linear slides are motorized, others are not. Examples of the former include roller and XY tables as well as machine and dovetail slides. Non-motorized slides include dovetail, roller and ball bearing varieties, which allow for movement with a minim... (read more)

The HV Type is a major and compatible improvement of our SV Type.

• Reduces unit size while keeping the equivalent performance
• Improves durability

Learn More (read more)

NB Ball Splines have no backlash because precisely ground (not drawn) raceways conform to the shape of the ball in the nut and shaft so opposing raceways have the same angles of contact. The spline shaft is straighter than the competition's – eliminating rotational vibration. Endlessly adaptable to high-load linear motions. 16 standard and customizable shaft sizes with diameters fr... (read more)

♦Mounting is completely compatible with SV Type.

♦Improve durability of the installed equipment by simple replacement.

♦ Offers unit size reduction while keeping the equivalent performance.

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NB Spindle Units are precision manufactured to meet your most demanding specifications affording unparalleled consistency. NB’s uniquely precise shaft series [SPINDLE UNIT] is not only widely used in general industrial machines, it has improved the performance of semiconductor fabrication machines and and various special-purpose devices.

For excellent wear resistance, NB use... (read more)

Of course crossed roller bearings provide more linear motion accuracy, rigidity, and weight-bearing capacity than other friction-reducing devices such as ball bearings – plus they support greater radial forces, moment or tilting loads. One crossed roller bearing replaces multiple ball bearings, saving space and costs. The best crossed-roller slideways, allow under 2 microns deflect... (read more)

NB Corporation's FIT Series of slide bush and shaft assemblies optimize clearance between shaft and bush. NB's precision manufacturing assures customers the best clearance for their needs. (read more)

The NB slide bush can be used in a wide variety of applications, one of the recent popular applications is to lift moment load in which a compact bush with some moment capacity is the best preference. Now that a long type and flange long type are added to the single, (read more)

What is the difference between a bushing and a bearing? A bushing is a round shaped cylindrical component. It is either equipped with rolling elements (ball, roller) or not and mainly used as a support component in an assembly to reduce machine wear out and for smooth operation. Its primary use is static (support) or dynamic (motion). On the other hand, a bearing is a machine ele... (read more)

The NB linear systems are heat-treated in order to harden the surface. Therefore, if the temperature of the linear system exceeds 100℃, the hardness and load rating will be reduced (refer to page Life, hardness coefficient). If resin is used in any one of the components, the system cannot be used in a high-temperature environment. The recommended operating temperature ranges for ea... (read more)

Crossed roller bearings provide more accuracy, rigidity, and weight-bearing capacity for linear motion than other commonly used friction-reducing devices such as ball bearings. And unlike ball bearings, they can support moment loads, radial forces or tilting loads. This lets one crossed roller bearing replace more than one ball bearing, thus saving the space required by ball bearings, lo... (read more)

NB Corporation's SGL slide guides are all high-precision, high-rigidity, high load capacity linear bearings with low friction, non-stick or slip mechanisms that provide smooth linear motion even under high loads.

These SGL Slide Guides range from 160mm lengths to 3000mm lengths. Six types of blocks are available depending on the mounting space and desired mounting method. The thre... (read more)

There are three types of Linear Actuators used in manufacturing: Hydraulic, Pneumatic, and Electro-Mechanical. Hydraulic actuators are primarily used for moving very heavy loads, in the same way, that large construction equipment often operates off of hydraulic pressure. Pneumatic actuators, by comparison, are good for extremely fast applications, where the lightweight components and low... (read more)

In this Design Guide, we build on the information presented in previous Design Guides & explain the parameters employed to properly specify linear bearings — especially those relating to the accuracy, life, & preload.
Download Guide

Learn More from NP Corp (read more)

Ball Screw Spline SPBR/SPBF

One single axis makes positioning, linear and rotary motion all possible!

The NB Ball Screw Spline consists of a high accuracy, high rigidity Ball Screw nut and Ball Spline nut attached to the ball screw spline shaft which has a screw groove and spline grooves. SPBR type has a Rotary Ball Screw nut and Rotary Ball Spline nut. Rotary Ball Screw nu... (read more)

Linear motion bearings are bearings that are made to move in a particular direction, and they come in a wide array of different designs. Some linear slides are motorized, others are not. Examples of the former include roller and XY tables as well as machine and dovetail slides. Non-motorized slides include... (read more)

Metal and plastic cages both effectively float between the bearing’s rails and they both tend to drift away from the bearing’s longitudinal center over time, a phenomenon called cage creep. It happens when the linear bearing only makes partial strokes, especially when mounted vertically. The cage can restrict slide travel because once the cage has moved and the bearing makes... (read more)

...... With Tapped or Threaded Shafts or Off-The-Shelf.

Our most requested diameters and pre-cut lengths are available with ends precisely machined. (read more)

Load and Moment

A load is applied to the linear systems as the figure below shows. Sometimes moment loads are applied to, for example, slide guides. Load and moment are defined as follows.

When excess load or impact load is applied to the linear systems while it is stationary or moving slowly, a permanent deformation occurs on the rolling elements and the race way. If this... (read more)

Cross Roller Linear Slide Guides | NB Slide Way

The NB SLIDE WAY is a non-recirculating crossed roller slide way utilizing precision rollers. It is used primarily in optical and measurement equipment where high precision movement is required.

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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 we... (read more)

This NB STUDROLLER™ crossed-roller linear bearing is perfect for motion control applications with extremely fast acceleration and deceleration (at dimensions ranging from 30-600mm lengths, 1-12 mm rollers, endurance is 150 million cycles), NB’s new NV type crossed roller bearing's Anti-Creep Cage Technology guarantees zero slippage.

NB, by placing studs in the center r... (read more)

Place a recirculating-ball bushing on a shaft and what do you get? Frictionless movement of the shaft.

But, create grooves along the axial length of the shaft that correspond to the radius of the bushing’s ball elements and you’ve got frictionless linear movement coupled with two important characteristics – those being anti-rotation torque transfer and higher loa... (read more)

Understanding the options available for slide guides makes finding the best one for your application easier (read more)

Factors To Consider When Choosing An Actuator of Four Feet Or Less Whether for packaging, life sciences, office equipment or factory automation, smooth motion, fast accelerations and a high degree of accuracy are hallmark requirements for linear movement actuators. Increasingly, miniaturization has added the additional requirement of compactness. One system that can meet all of the abov... (read more)

A bearing or bushing can be used for linear or rotational motion. While most bearings and bushings are designed for only one type of motion, there are some parts that can combine both. NB stroke bush products, for instance, have raceway grooves along the axis of the shaft, same as NB’s regular slide bushes. But between the ball retainer and the outer casing, there are rotational ba... (read more)

What are different parameters to be considered while designing a linear guide system?

When selecting a linear guide system, a number of different factors must be considered. First and foremost, the approximate size and load of the system must be determined. Miniature sized profile guides aren’t capable of moving 1000 lb+ loads for any extended length of time, and a la... (read more)

Manned Or Not, This Lunar Project Has A Prototype (read more)

NB Slide Ways are non-recirculating linear motion bearings used primarily in optical and measurement equipment where high precision movement is required. The SV style consists of 2 roller cages with precision rollers in a cross arrangement and four rails with V-shaped raceways. The SVW has one rail with V-shaped grooves on both sides and 2 SV rails. Catalog contains all dimensions... (read more)

EXRAIL® – An innovative linear recirculating linear guide rail system to achieve ultra-high rigidity, ultra-high motion accuracy, and ultra-high damping capability. Incorporation of needle rollers gives the EXRAIL® 50% higher rigidity and higher damping capability compared to current roller bearing and guide way assemblies in the market.

Nippon Bearing incorporated t... (read more)

A roller bearing is a cylindrical unit that is used to provide low-friction movement for a bushing or bearing block. A ball bearing is a spherical unit that accomplishes the same objective as a roller bearing. The real difference has to do with the contact surface between the bearing and the rail. For ball bearings (assuming a perfectly spherical bearing and no deformation), the contact... (read more)

Before you specify a rotary ball spline, ask the question, “Should the rotary spline nut be riding on angular contact ball bearings or crossed roller bearings?” After ascertaining your application’s requirements – stroke length; velocity; applied load; mounting space; duty cycle; required life; dimensions; installation direction; environment and accuracy – y... (read more)

roduct Description

NB SLIDE WAY cross roller guides use precision rollers to provide stable, non-recirculating linear motions in equipment such as optical and measuring equipment. NB SLIDE WAY cross roller bearings are suitable for both high-speed and low-speed applications. You can count on them to provide minute motions with exceptional stability and low noise. A perfect solutio... (read more)

NB ball splines are used in a wide range of applications, including robotics, transport-type equipment and other machinery where it is necessary to sustain heavy loads while transferring torque smoothly. Several models are available, including various nut and shaft configurations.

Key Features At-a-Glance

NB ball splines are comprised of a shaft and nut assembly. Ball splin... (read more)

Factors To Consider When Choosing An Actuator of Four Feet Or Less

Whether for packaging, life sciences, office equipment or factory automation, smooth motion, fast accelerations and a high degree of accuracy are hallmark requirements for linear movement actuators. Increasingly, miniaturization has added the additional requirement of compactness. One system that can meet al... (read more)

“Bearings housed in carriages and tables can ride on round shafts or square profile rails. Here’s a look at the advantages of each when an application demands guided linear motion.”

Engineers faced with a linear-motion application often turn to pre-engineered linear bearings and guides. But linear guides come in two basic shapes – round and square – a... (read more)

The NB GONIO WAY is a curved crossed roller slide bearing. It is a curved motion bearing utilizing low-friction, non-recirculating precision rollers. It is used when there is a need to change the gradient or obtain an accurate gradient angle without changing the center of rotation in high-precision optical and measurement equipment.

Structure and Advantages

The NB GO... (read more)

NB's BG ball screw actuator is a compact single axis actuator that integrates a Slide Guide and Precision Ball Screw. BG outperforms conventional positioning tables because it has a unique "U" shaped Guide Rail and Slide Block. It is so rigid it can be one-end supported. Its ball circuits are closer to the base for more stability. Download CAD drawings. (read more)

The NB ROTARY BALL SPLINE can be used for both rotational motion and linear motion. The applications include SCARA robots, the vertical shaft of assembly equipment, tool changers, and loaders, etc. (read more)

NB's new NV type STUDROLLER™ with Anti-Creep Cage Technology in three popular sizes provides greater load capacity. Load capacities are increased 1.4 to 2.3 times over standard SV type. Roller-to-rail contact area is extended 42 to 58 percent while the number of rollers is increased 20 to 55 percent. (read more)

NEW TOPBALL® Ultimate, TW-H Type
TOPBALL® Ultimate is unrivaled in its class. It can carry 4 times the load and has 64 times the life of standard slide bushings. (read more)