Before you specify
Frequently Asked Questions
What is the practical difference between this and the Dahle 50414?
The dust filter, and that is essentially it. Both are oil-free P-4 machines with 18-sheet ratings, 10.25-inch throats and 30-gallon bins. The 50414 is quieter on Dahle's published figures - 46 dB against 52 - and its spec sheet lists lifetime cutting-cylinder coverage where the 51414's published warranty is two years. Buy the 51414 if airborne paper dust in the room is a genuine concern; buy the 50414 if it is not.
How often should the CleanTEC filter be replaced?
Dahle does not publish a fixed interval, because it depends entirely on throughput. The replacement part is Dahle item #20710. A practical routine is to inspect it every time you change the shred bag and replace it when it is visibly loaded with dust. A clogged filter restricts airflow, so the machine has to work harder and the filtration benefit disappears.
Does it need oil?
No. The 51414 uses Dahle's oil-free cutting head. Only two models in the CleanTEC range do - this one and the 51314. The 51322 and the P-7 41000 series all use an automatic oiler and need shredder oil as a consumable.
Can it shred CDs, credit cards, staples and paper clips?
Yes to all four. Dahle rates the 51414 P-4 for paper and O-3 for optical media. Feed discs singly rather than mixing them into a stack of paper - a disc shatters instead of shearing, and the fragments are what cause jams.
How many people can share it?
Dahle positions it for three to five users. At 18 sheets per pass and 18 ft/min it handles a normal working day for that group. Above five regular users the queue rather than the machine becomes the problem, and a department-class shredder such as the Dahle 50514 makes more sense - though you would lose the dust filtration, which Dahle does not offer on the 505xx line.
Will legal or tabloid paper fit?
Legal yes, tabloid no. The feed opening is 10.25 inches, which takes letter and legal fed short-edge first with room to spare. Eleven-inch tabloid has to be folded, and folding doubles the effective thickness, so an 18-sheet pass rating becomes nine folded sheets. There is no wider-throat model in the oil-free CleanTEC line; if you need both a 12-inch throat and dust filtration, the high-security CleanTEC 41534 is the only Dahle machine that offers the combination.
What bags does it take, and are they included?
Dahle shred bags item #20725, covering 20-30 gallon bins and supplied 100 to a box. They are not included with the shredder - budget for them separately as an ongoing consumable. The same bag fits the CleanTEC 51314 and 51322 and Dahle's 30-gallon 504xx office models, so a mixed fleet needs only one bag part number on the supply order. Generic liners will fit the bin but are not profiled to it and tend to slide down the sides.