
Before you specify
Frequently Asked Questions
Is 3.9 x 40 mm really P-4?
Yes. DIN 66399 P-4 allows a maximum particle area of 160 mm2. A 3.9 x 40 mm particle is 156 mm2, so it qualifies with a small margin. This is worth checking on any shredder listing, because a 4.5 x 30 mm cut is 135 mm2 and also P-4, while several cuts marketed as "high security cross cut" are actually P-3. HSM publishes E-3, F-1, O-3, P-4 and T-4 for this article.
Does the automatic oiler need refilling, and how often?
The P44i has an integrated automatic oiler that lubricates the cutting head without operator involvement. It does draw from a reservoir that is topped up periodically with HSM shredder oil. HSM does not publish a refill interval or reservoir volume for the P44i, so we will not invent one - the machine signals on the touch display when it needs attention. Use shredder oil only; vegetable and aerosol oils gum the head.
Can I shred CDs and DVDs in it?
You can - HSM rates the paper head O-3 and lists optical media as approved - but you will be running discs through the same cutters that do your paper, which accelerates wear and produces a mixed waste stream you then have to separate for recycling. If optical media is a routine part of the job rather than an occasional one, buy the version of this machine fitted with the separate 4 x 7 mm CD cutting unit so paper and discs never share a head.
How often will we be emptying the bin?
The cabinet holds 54.2 gallons (205 L) and HSM does not publish a sheet-count for this head. Cross-cut waste packs denser than the strip cut from the 1870 and 1871, so it holds noticeably more paper by weight. A department putting a few thousand sheets a week through it will typically empty once a week. The machine signals bin-full and stops rather than jamming itself.
Will it take a stapled and clipped file straight from the cabinet?
Yes. Staples, paper clips and credit cards are all approved materials, and the rollers are solid steel. Do not feed ring binders, metal binder combs, bulldog clips or laminated pouches. Manila folders are fine but count as several sheets each against the 43-45 rating, so drop the stack size when a batch is folder-heavy.
Is this shredder NSA approved?
No. The NSA/CSS Evaluated Products List for paper shredders covers devices meeting NSA/CSS Specification 02-01, which requires a maximum particle of 1 mm x 5 mm and inclusion on the published list. This machine cuts 3.9 x 40 mm, so it is not eligible and HSM does not claim otherwise. P-4 is a commercial and regulatory standard, not a classified-material standard.
What is the difference between this and the P44i 1875?
Cutting head only. The 1873 is P-4 at 3.9 x 40 mm and takes 43-45 sheets; the 1875 is P-6 at 0.78 x 11 mm and takes 17-19. Same cabinet, same 1,900 W drive, same 400 mm intake, same 54.2-gallon bin. Going to the 1875 costs you well over half your throughput and puts the machine outside HSM's lifetime cutting-roller warranty, which covers P-2 to P-5 only. Take that step only if a policy requires it.