It depends on kinds of tools. For details, see the introduction page of each tool.

No special drive machine is necessary. Any machine will do if it has revolution and feed functions.
Compared to cutting operations, Superoll requires less torque and therefore less power of the drive machine is enough. Superoll can be attached to a multi-purpose drilling machine, lathe, turret lathe, boring machine and drill unit.

A lot of low-viscosity coolant should be used to ensure cleaning, cooling and lubrication. Although it can theoretically work without coolant, using coolant extends the life of the tool and achieves better finishing of surface roughness, and therefore, its use is recommended.

At best, a roughness of Ry0.2µm can be expected, although it greatly depends on the material quality, roughness in the pre-finishing, operation conditions, etc. See details of surface roughness.

Improvement of surface roughness leads to the improvement of roundness.
However, Superoll is limited to the surface processing of plastic deformation, and no improvement in other shapes such as ellipse can be expected.

In the case of metals such as iron, hardness will be increased by about Hv40.
For stainless steel, it is sometimes increased up to Hv100. Remember that the increase of hardness occurs only within a depth of 0.1-0.2 mm from the surface.

Superoll processing finishes a work surface by rolling pressure. Therefore, it requires sufficient thickness to tolerate the rolling pressure. Processing a thin part could cause undulation or loss of roundness.
Usually, the following methods are employed to solve this problem.

1. Minimizing the burnishing value
2. Supporting the periphery with jigs
3. Conducting Superoll process before reducing the wall thickness.

Also, tools dedicated for thin work can be developed to meet your specifications.

Since Superoll processing is a method of plastic deformation that levels surface roughness by rolling pressure, a regular feed pattern created by lathes or boring machines is appropriate as a pre-finished surface.
For an irregular surface, which could be created by drilling, Superoll cannot perfectly fill in the grooves and satisfactory finishing of the surface cannot be anticipated.

It will increase by about 30%, compared to turning machines. Fatigue strength increases because of the following three reasons.

1. Compression stress remaining on the surface
2. Increase of material strength due to the hardening effect of Superoll
3. Removal of fine unevenness due to surface finishing

Yes, we design and make tools best suited to your needs.
Please use our Superoll inquiry sheet.�iPDF�j

Compared to grinding, it is about 1/10-1/20. One-pass mirror finishing is possible.
For the best revolution speed and feed, please click here.

AJust once. Superoll processing allows mirror finishing in one pass, which is quite different from other processings such as grinding and honing.

Low-viscosity oil-based working fluid should be used with "Superoll oil," exclusively developed for Superoll processing, added at 5%. It will improve the life of worn- parts and provide a satisfactory finishing surface due to the cleaning, cooling and lubricating effects.
Water soluble coolant can be used although it is rather inferior to the oil-based coolant.

The Superoll SH/SB series and SO/SA series have a microadjustment mechanism, which allows adjustment to a diameter of 0.0025 mm.

Worn parts such as the roller and mandrel are all replaceable and the running cost is low.

Sizing within several micrometers to ten and several micrometers is possible. Although it depends on the material quality and operational conditions, usual sizing of the inner diameter is about ten and several micrometers and sizing of the outer diameter is about several micrometers.
For details, please click here.

For processing curved and spherical surfaces, the following tools are available.

» Superoll SC and FD

» Diamond Superoll DSR

» Ball point tool HG

» Special single roller Superoll