
Before you specify
Frequently Asked Questions
What does the external automatic oiler actually do?
It holds a reservoir of cutting-block oil and dispenses it onto the cutting rollers automatically, so lubrication happens on a schedule rather than when somebody remembers. On a micro-cut machine that is the difference between a shredder that still takes eleven sheets after two years and one that jams on six. The unit is external, so refilling and servicing it does not involve opening the shredder.
Do I still need to buy oil?
Yes. The oiler automates the application, not the supply. Refills are a running consumable and you should use HSM cutting-block special oil - aerosol lubricants, WD-40 and vegetable oils leave residue that hardens between the cutting discs and makes clogging worse rather than better. How long a refill lasts depends entirely on how much paper the machine processes.
How is this different from the plain 1/16 x 5/8 B24?
Mechanically it is the same shredder: same 1.9 x 15 mm P-5 cutting head, same 610 W motor, same 9.45-inch throat, same 9.2-gallon bin, same 395 x 317 x 605 mm cabinet. The difference is that this SKU is supplied with the external automatic oiler. If your shredder is shared and unowned, that is worth the premium; if one person maintains it, it is not.
How many sheets does it take?
Nine to eleven sheets of 80 g/m² paper, from HSM's datasheet for article 1782111. HSM's range brochure quotes a higher figure because it measures at 70 g/m², roughly 15 percent lighter paper. US 20 lb copier paper is about 75 g/m², so treat 9-11 as the number to plan around. Regular oiling is what keeps you at the top of that range rather than the bottom.
Is this shredder NSA approved?
No. The NSA/CSS Evaluated Products List for paper shredders requires a maximum particle size of 1 mm x 5 mm and requires the exact model to be listed. This machine cuts 1.9 x 15 mm. The SECURIO B24 does appear on the January 2026 EPL, but only in its 1 x 5 mm configuration - the model sold here as the 1/32" x 3/16" B24. A P-5 rating is not an NSA approval.
Can it shred CDs, DVDs or credit cards?
Cards yes, discs no. The head is rated E-4, F-2, P-5 and T-5; the T class covers magnetic-stripe media such as bank and access cards. There is no O rating for optical media, so do not feed CDs or DVDs into it. On the B24 chassis only the 1/4" strip-cut model handles discs, and that is a P-2 machine.
How many people can share it?
HSM builds the B24 drive for continuous operation, and at 9-11 sheets per pass with a 9.2-gallon bin it comfortably serves a small department - realistically four or five regular users. Beyond that the constraint becomes the person standing at the machine rather than the machine itself, and an automatic-feed model such as the AF500 in the same P-5 cut becomes the better answer.