Outline

"Ball to Needle"
This is "the Ultimate form of linear guide"

By adopting needle roller, when it enters it makes possible to reduce collision, friction, vibration and to travel with super high accuracy. Because of using needle rollers, the pressure is dispersed, so it is possible to boost guide's life greatly. Ultimate form of linear guide, this is our "Million Guide".


1.High rigidity

"Point to line contact" By adopting highly accurate wide roller, we've realized high rigidity which is over 10 times larger compared with existing ball type.

※Our internal investigation: Comparison with a normal circular ball spline shaft. Approximately double in rigidity compared with a normal ball retainer type guide post for die-set.


Comparison of Contact Area

Million Guide realizes high rigidity for its large contact area.

Ball case (Ball type) - Roller case (Million Guide)


Comparison of Lateral Pressure Deflection (Rigidity)

Comparison of Lateral Pressure Deflection (Rigidity)

※Our internal investigation: Comparison with a normal circular ball spline shaft of φ40.

Comparison of the basic dynamic load rating C by size

Comparison of the basic dynamic load rating C by size

2. Low vibration

By adopting highly accurate wide roller, we can make low pre-load with high rigidity on Million guide. For this reason, we've realized super low vibration and smooth rolling.

Advantages of Roller type

Circular ball type

Ball contact/collision makes friction, leading to wear, dust and heat emission. The pre-load off and on are repeated at the ball circulation, and it makes one of major vibration factors.

Million Guide (Roller type)

Rollers do not contact each other, and no contact, collision and friction occurs to rolling elements. No circulation and low pre-load structure makes less entry impact and vibration, leading to smooth rolling.


No friction, contact&collision


Low vibration under 1/20 compared to that of ball type.

Low vibration under 1/20 compared to that of ball type.

※Our internal investigation: Comparison with a normal circular ball spline shaft.


3.High Precision

Million guide which has realized high rigidity and low vibration has excellent straightness, especially Million guide's repeatablity has achieved 3 times more than that of conventional one.

Comparison of repeatability: X/Y directions

Comparison of repeatability: X/Y directions

The ball type with high vibration and low rigidity has deviation in the positioning accuracy. Million guide of low vibration has excellent repeatability.

※Our internal investigation: Comparison with a normal circular ball spline shaft.

Comparison of straightness: X/Y directions

Comparison of straightness: X/Y directions

4.Infinitesimal rolling resistance

By making low pre-load on Million guide, it reduces rolling resistance to the utmost limit so the sliding friction can be under 20g.※

It is the best for applications which need infinitesimal pressurizing force control.

※There is a limit by size.

Ball guide case - Million guide case

5.Usable with Single shaft

By arranging rollers in polygonal position, it can get detent effect.
It is usable with single shaft guide so that the equipment can be simple.

Ball guide case - Million guide case

Higher pre-load (5-12µm) for keeping the rigidity on the ball guide brings impact/ vibration at the entry, leading to shorter product life.
Lower pre-load (2-6mm) for the roller with high rigidity brings smaller impact and smooth motion at the entry, leading to longer product life.
There are no stoppers for rotation inside.
No rotation by the needle rollers in polygonal position.

6.Customizing

In accordance with the customer's needs, we can produce the special shape of bush and post.

Customizing

We can make a proposal of the shape suitable for your equipment.
In the case of right drawing, the infinitesimal rolling resistance makes both necessary smoothness and rigidity for load control, and improved accuracy.

7.Extension of grinding cycle

Application examples

Application example 1

Application example 1

Effects of Million guide

The punching accuracy is expected to be increased by Million guide to keep the clearance between the punching and the die evenly in all directions. Also the die set regrinding cycle is expected to be extended by decreasing the chipping of the punching and the die with its higher rigidity.

Application example 2
Application example 2