
Before you specify
Frequently Asked Questions
What is the real difference between P-4 and P-5?
Particle area. P-4 allows up to 160 mm²; P-5 allows up to 30 mm², so a P-5 particle is more than five times smaller. This machine produces 1.9 x 15 mm particles at 28.5 mm². In practice P-4 is the accepted level for general personal data and P-5 is what organisations specify for financial records, medical files, legal case papers and anything classified internally as high risk.
How many sheets will it take?
Seven to nine sheets of 80 g/m² paper, from HSM's datasheet for article 1832121. HSM's range brochure shows a higher number because it uses 70 g/m² stock as the reference. Standard US copier paper sits between the two at roughly 75 g/m². Plan on eight sheets and you will not be disappointed; feed twelve and you will be clearing a jam.
Can it shred CDs, DVDs or plastic ID cards?
Cards yes, discs no. The cutting head is rated E-4, F-2, P-5 and T-5 - the T class covers magnetic-stripe cards such as bank and access cards. There is no O rating, so optical media should not go through it. Among the B22 models only the 1/4" strip-cut version handles discs, and it does so at the much lower P-2 level.
How often will I be emptying the bin?
Less often than the cut rate suggests. HSM rates the 33-litre bin at around 420 sheets' worth of shredded material at this cutting size, because fine particles settle far more densely than strips. Since the machine only takes seven to nine sheets a pass, most users find that bin emptying is not the bottleneck - feeding is. The display indicates a full bin and the machine stops.
Is this shredder NSA approved?
No. NSA/CSS 02-01 requires a maximum particle of 1 mm x 5 mm and requires the specific model to be on the NSA/CSS Evaluated Products List. No B22 appears on the January 2026 list, and 1.9 x 15 mm particles are far larger than the standard permits. A high DIN rating is not the same thing as NSA approval. The HSM model on that list is the SECURIO B24 in the 1 x 5 mm cutting size.
How many people can realistically share it?
One or two who shred regularly, or a small team that shreds occasionally. The B22 is HSM's entry-level B-series machine, with a 440 W motor rather than the B24's 610 W, and at 7-9 sheets per pass a genuine queue forms if three or four people arrive with folders. For a department, the B24 or AF500 at the same P-5 rating are the machines designed for that load.
Does the fine cut mean more maintenance?
Yes, and it is worth planning for. Micro-cut rollers trap paper dust between the cutting discs, and a P-5 head that is never oiled will drop from nine sheets to five within a few months of daily use. Oil each time you empty the bin using HSM cutting-block special oil applied across the full intake width. Do not substitute aerosol lubricants or vegetable oil - both leave residue that makes clogging worse.