LINEAR SYSTEM0 pages

LINEAR SYSTEM

LINEAR SYSTEM

PROCESS FOR SELECTING NB LINEAR SYSTEM

Check the application conditions

The NB linear system is a linear motion mechanism which utilizes the
rotational motion of ball and/or roller elements. NB offers a wide range
of linear motion products of high precision quality that contribute to
the size and weight reduction of machinery and equipment.

Decide system type

ADVANTAGES
Low Friction and Excellent Response

Despite the compactness of the NB linear system, the
system uses relatively large rolling elements on a long raceway resulting in a high load capacity and a long travel life.

Slide Guide
Ball Spline
Slide Bush
Slide Way

High Load Capacity and Long Travel Life

The dynamic friction of the ball or roller elements is
substantially lower than that of full-face surface sliding
friction. Since the difference between dynamic and static
frictional resistance is small, motion response is excellent in
terms of positioning accuracy and in high speed applications
with acceleration and deceleration.

I dentify machine type to be
u s e d , a p plic atio n c o n ditio n s ,
environmental conditions, and
desired accuracy.

High Precision and Smooth Movement
The NB linear system is designed for the rolling elements
to achieve extremely smooth motion. The raceway
surface is finished by precision grinding for high precision
movement with optimal clearance.

Pre-select the size and
number of linear systems

Ease of Installation
The NB linear system shortens machining and assembly
time compared with that of a full-face surface sliding
bearing.

Calculate load

Variety of Types
A wide variety of types and sizes of the NB linear
systems are available to best serve the purpose for every
application and requirement.

NG

Determine static load
OK

NG

Compute rated life
OK

NG

Determine preload and accuracy

OK
Select lubrication and
dust prevention method

OK
NG

Confirm the space needed
in the equipment

OK
Selection completed
Eng-1

Eng-2

Pre-select the size and number
based on balance of machinery
and other equipment as well as
past experience.

Calculate load on each system.
Calculate average variable load.
(refer to page Eng-6-8)

Determine basic static load rating
and allowable static moment by
applying static safety factor.
(refer to page Eng-3)

Compute rated life and compare to
required life.
(refer to page Eng-4)

D e cid e p reloa d a n d accu racy
based on the operating conditions.
(refer to each product description
for preload and accuracy)

Select lubrication and dust
prevention method. (seals, bellows,
covers)

Confirm space and installation
dimensions in consideration of
the machine size and ease of
maintenance.