For Your Safety

Precision Processing Tools: Use Conditions That Are Excluded From Support

Despite the proper use of DISCO’s (hereinafter referred to as “the company”) precision processing tools (e.g., grinding wheels, dry polishing wheels, and dicing blades) under normal conditions, if a defect occurs due to the company’s responsibility, the company will support prompt resolution of the issue (including investigation and analysis of the precision processing tools).

However, the following cases are excluded from support, and any response to the resulting issues will be chargeable.
Please also refer to the company’s Policy for Process Support , as well as the company’s guarantee policy for customers using DISCO’s products

Use Conditions That Are Excluded From Support

Use of a precision processing tool beyond its specified expiration date.
Use of a precision processing tool with damaged packaging due to dropping or similar impact.
Use of a precision processing tool with visible damage identifiable by visual inspection.
Use of a precision processing tool that was not stored under the recommended conditions.
Use of a precision processing tool installed on a equipment with accumulated contamination, such as cutting debris.
Use of a precision processing tool that was not correctly installed on the equipment.
Use of a precision processing tool without performing the idling or warm-up recommended by the company.
Use of a precision processing tool above the specified maximum rotational speed.
Failure to use the conditioning tool (dresser board, PRECUTBOARD®, etc.) and conditions recommended by the company for the precision processing tool.
Use of a precision processing tool under processing conditions that differ from the company's recommended processing conditions (as stated in the test cut report).
Use of a precision processing tool that has been reconditioned by the customer or any third party other than the company.
Use of a precision processing tool in combination with equipment other than machines and related parts sold by the company.
Use of non-genuine parts prepared by the customer without using the jig (WHEEL GUARD®, HubFit®, etc.) the company provides for mounting the company’s precision processing tools.
The issue is attributable to equipment connected to the company’s product that is not specified by the company.
External factors beyond the company’s responsibility, such as fire, earthquake, smoke damage, gas damage, abnormal voltage, air pollution, other pollution, or other natural disasters.
Causes that could not have been foreseen under the scientific and technical standards at the time of shipment from the company.

Rotation Speed Limit

When blades and wheels (precision processing tooling) rotate at too high a rate when idling during equipment setup, there is a risk that they may break, thus causing injury and damage to the equipment. Please follow the speed limit^* inscribed on the precision processing tooling to avoid such instances.

Rotation Speed Limit

A rotation upper speed limit for precision processing tooling during idling when setting up the equipment.
This safety speed limit was set based on measurements that determined the rotation rate at which products are at risk of breakage.

Rotation Speed Limit Inscribing

Please confirm the rotation limit, which is inscribed on each product, and is also written on the packaging.

Examples of product inscriptions

* In case of a 30,000 min^-1 rotation speed limit, Limit 30,000 min^-1 is inscribed.
* Inscribing is performed by the same method and at the same position as indicating the specification; therefore, there is no effect at the processing point.

Example of the package label inscriptions

* The inclusion of a warning on the packaging requires us to increase the number of labels on packaging, or to increase the size of the labels.

Video of Blade Breakage Due to High Rotation Speed

This video shows blade breakage caused by rotating over the speed limit during equipment idling.

* The wheel cover was removed for the purpose of recording this video.
* This video was edited in parts to speed up playback time.

When Using with a Speed over the Rotation Limit

If the currently used processing parameters exceed the rotation speed limit, please contact DISCO sales representative. We will check the safety.

Safety Sheet on How to Handle Hub Blades

This safety sheet explains the safety precautions regarding the handling, usage and disposing of hub blade. Always keep this sheet near the workplace for easy reference.
The following files are "Safety Sheet on How to Handle Hub Blade" in different languages. Please choose the language you want.

Expiration Date Displayed on Precision Processing Tools

The expiration date is displayed on DISCO’s precision processing tools as shown below.The expiration date (of your product) can be also found using the page of "Inspection Sheet Search For Precision Processing Tools" (except for some products).

Details

Caution: Exposure Reworking of DISCO Hub Blades by a Third Party