The different grinding methods used in industry and trade are tailored to the particular application. For example, belt sanding machines are used for grinding with high material removal rates and also for deburring metal and cast parts. Angle grinders for high-speed grinding and grinding disc are used in cases where aggressive grinding takes place, for example, when removing metal or when working on welds and weld seams. Random orbital sanders are devices that are most commonly used for tasks requiring a more refined finishing such as surfaces finishing. Professional random orbital sanders feature a hole pattern in the backing pad. These holes are used to either allow an external extraction system or an active extraction unit built into the device to extract the dust from the abrasive disc. The benefits arising from this design are immediately apparent in the fact that the workstation is kept clean and that the air in the room is kept free from dust and particles.

Sanding with random orbital sanders offers a host of advantages. Random orbital sanders are machine that can be used dust free and operated with great ease. The combination of the oscillation of the backing pad with its rotation produces a swirl free finish. What is more, the extraction option keeps the workstation and the air clear from dust. Changing the abrasive discs can be done by hand and does not require any tools, as the abrasive is kept in place on the backing pad by means of a hook and loop fastener. The hole pattern Klingspor has selected for the multihole backing pad HST 555 ensures compatibility with the hole pattern most commonly found in the market. The backing pad itself is screwed to the sander by means of an M8 or 5/16” thread. Thus, the Klingspor backing pad HST 555 fits all standard devices with this thread and a support for 150 mm diameter abrasive discs. The HST 555 is available in three hardness’s: soft, medium and hard. The HST 555 has a fine, heat resistant self fastening pad. This support ensures that abrasive discs with velour hook and loop surface will be affixed to the backing pad firmly and securely. As a result, safe working and easy handling form a perfect system.

HST 555 Multi-Hole Backing Pad - Hard