FAQ

You can search for frequently asked questions.

What is the difference between electric micro grinders and air micro grinders?

We recommend the electric system because it can maintain the set rotation speed even under processing load.
The air system is less expensive in terms of initial cost, but the electric system is more economical in terms of operating cost, considering the power consumption of the compressor that produces the air.
In addition, the electric system is also an energy-saving and environmentally friendly measure.
What is the definition of motor rotation direction?

It is defined by the motor model as follows:

• Motor model R/RA: forward rotation (clockwise)

• Motor model L/LA: reverse rotation (counterclockwise)
What are the advantages of electric motors compared with air motors?

Electric motors are driven by electricity. The rotation speed can be adjusted in a wide range by a high-performance microcomputer. In addition, the rotation speed can be accurately displayed by a high-precision rotation detector.
　
Air motors are driven by air pressure from 0.3 MPa to 0.5 MPa. The rotation speed can be adjusted, but it cannot be fine-tuned and displayed.
What is the difference between motor spindles and micro grinders?

Motor spindles are designed to be mounted on machines. Be sure to use them mounted on the machines.
Micro grinders are designed to be used by hand. Be sure to use them as hand tools.

What is the purpose of a reducer?

It is used to reduce the rotation speed and increase the torque. By attaching a reducer, the rotation speed is reduced and the torque is increased by the reduction ratio.
For example, if a 1/4 ratio reducer is attached to a 30,000 min^-1 motor, the rotation speed is reduced to approximately 7,500 min^-1 and the torque is increased approximately 4 times.

How do I replace tools for the polishing attachment LS-100, NLS-110, and ELS-100?
How do I replace tools for the belt sander attachment KBS-101 and EBS-101?
How do I replace tools for the pencil type polishing attachment ML-8 and EML-8?
How do I replace tools for the 90° angle type attachment IC-300 and EIC-300?
How do I replace tools for the ring type attachment IR-310 and EHR-500?

How do I discuss the selection of Nakanishi products?

Contact our distributor near you.

＞Link to sales network
How can I try Nakanishi products before purchase?

Contact our distributor near you to check availability.

＞Link to sales network
How can I obtain operation manuals?

Contact the dealer which you purchased.
You can also download it from the links below.
＞Link to products list
How can I obtain the latest catalog?

You can download it from the link below.
＞Link to catalogs
How can I purchase Nakanishi products?

Contact our distributor near you, as we do not sell our products directly.

＞Link to sales network

What is the warranty on Nakanishi products?
Our products have a limited warranty. We will replace or repair the products free of charge under the following conditions:
1. If there is a manufacturing defect.
2. If there is a shortage of contents.
3. If the product is damaged when the package is opened. This does not apply if the damage was caused by the customer’s negligence.
　
Please contact us or the dealer which you purchased.
NAKANISHI INC.
Industrial Sales Dept.
Business hours: 8:00 a.m.–5:00 p.m. JST
Closed on Saturdays, Sundays, and public holidays
TEL: +81 289 64 3520
webmaster-ie@nsk-nakanishi.co.jp
How do I send my Nakanishi product for repair?

Send your product through the dealer which you purchased. If this is not possible, contact our distributor near you.

＞Link to sales network

PRODUCTS