Page 90 - ENGINEERING REVIEW NOVEMBER 2022_Neat

ENGINEERING
REVIEW TECH INNOVATION

Cross Linear Guideway

Feature Four-way Equal Load
Balls roll four rows of raceways precision-ground on a rail and a The four trains of balls are allocated to a circular contact angle
carriage, and end cap incorporated in the carriage allow the balls at 45°, thus each train of balls can take up an equal rated load in
to circulate. Since retainer plates hold the balls, they do not fall all four directions. Moreover, a sufficient preload can be achieved
off¬ even if the rail is pulled out. This model is an integral type of to increase rigidity, and this makes it suitable for any kind of
linear guideway that squares an internal structure similar to other installation.
model, which has a proven track record and is highly reliable,
with another and uses two rails in combination. High Rigidity
The two rails are also machined with high precision in Since balls are arranged in four rows in a well-balanced manner,
relative straightness. As a result, extremely high accuracy in this model is stiff against a moment, and smooth straight motion
orthogonality is achieved. Since an orthogonal linear guideway is ensured even a preload is applied to increase the rigidity. The
system can be achieved with model MSH alone, a conventionally rigidity of the carriages is 50% higher than that of a combination
required saddle is no longer necessary, the structure for of two carriages secured together back-to-back with bolts. Thus,
X-Y motion can be simplified and the whole system can be MSH is an optimal linear guideway for building an X-Y table that
downsized. requires high rigidity.

Construction

86 | NOVEMBER 2022