Controlled sanding with dust-extraction options and matching accessories for the job.
Atlas Copco LST21 is a family of pneumatic random orbital sanders for controlled, consistent finishing on a wide range of surfaces.
It fits sanding and surface-preparation tasks in production lines, workshops, and industrial finishing stations, with model choices and matching accessories for different pad sizes and connection needs.
How do I choose between LST21 R550 and LST21 R650?
Step 1: Decide which pad diameter suits your job.
Step 2: Check whether you need a 125 mm or 150 mm pad setup.
Step 3: Match the model to your sanding process and finishing station.
What accessories can be ordered with the LST21 series?
You can order velcro pads, self-stick paper pads, an adapter, a maintenance tool, a hose nipple, and dust extraction hoses.
Is the sander suitable for dust extraction setups?
Yes.
The series has dedicated dust extraction hose options available as part of the accessory range.
What kind of work is the LST21 family suited for?
It is suited for sanding, surface preparation, and industrial finishing where a consistent result matters.
What should I check before placing an order?
Check the required pad diameter, the connection setup, and which maintenance or dust extraction accessories you want to include.
Are maintenance tools and related parts available?
Yes.
Maintenance tools, adapters, and dust extraction accessories are available for the series.
| Model | Max free speed (r/min) | Max pad size (mm) | Orbit dia (mm) | Height over spindle (mm) | Air inlet thread (in) BSP (in) | Max output (W) | Weight (kg) | Air consumption at free speed (l/s) | Rec hose size (mm) | Handle (With) | (Without) | Ordering No. |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| LST21 R550 (self suction) | 12000 | 125 | 5 | 84 | 1/4 | 200 | 0.85 | 8 | 8 | – | • | 8423036170 |
| LST21 R650 (self suction) | 12000 | 150 | 5 | 84 | 1/4 | 200 | 0.85 | 8 | 8 | – | • | 8423036174 |
The complete accessories tables, exactly as they appear in the Atlas Copco catalog – every ordering number, dimension and drawing. The PDF attached to this page is also available for download.
The HADI Technologies team will help you select the right configuration, verify application requirements and provide technical information about Atlas Copco LST21 Pneumatic Random Orbital Sander.
The right solution starts with a clear brief
The HADI product development and engineering team can adapt a tool, product or system to your application.