SKU:

CS-Brother-OEM-TN850-DR820-4set

Printer Brand:

Brother

OEM Number:

TN850, DR820

Ink Color:

Black

Page Yield:

Toner:8000, Drum:30000

Printer Type:

Laser Cartridge

Condition:

New

Frequently Asked Questions

Why does this box carry so much more drum life than toner?

Because the two halves of the bundle wear out on completely different clocks, and the ratings make that plain. Each DR820 drum unit is rated at 30,000 pages, so the pair holds 60,000 pages of drum capacity; each TN850 cartridge is rated at 8,000 pages, so the pair holds 16,000 pages of toner. Looked at per machine, one drum typically sees three to four TN850 cartridges come and go before it is spent. What you are really stocking here is long-term drum security: once these parts are in service, toner is the only line on your reorder list for a long stretch — expect roughly five or six further TN850 cartridges to be consumed across the pair of drums before the second drum approaches the end of its rated life.

Our purchasing runs in quarterly cycles — what does a single box do for the paperwork?

It collapses four separate buys into one order, one shipment and one invoice. The bundle is priced at $540.14 against an $810.21 combined list figure, and it also beats assembling the contents yourself: the two TN850 cartridges at $140.79 each and the two DR820 drums at $159.29 each total $600.16 bought piece by piece, so the box saves $60.02 on top of the admin saving. For a department that has to raise, approve and file every purchase, having the whole refresh land as a single line in one quarter's budget is worth as much as the discount. The order ships from whichever of our IL, PA, GA or CA warehouses puts it on the road fastest.

Can one of the drums sit on the shelf as a shared spare for either printer?

Yes, and that is the quiet advantage of running a standardized fleet. Both drums are identical DR820 units, and the same TN850-and-DR820 pairing serves the HL-L6200DW and HL-L6200DWT, the HL-L6250 DN and HL-L6250DW, the HL-L6300DW and the HL-L6400DW family, plus the MFC-L6700DW, MFC-L6750DW, MFC-L6800DW and MFC-L6900DW on the multifunction side. A shelved spare therefore fits whichever machine flags its drum first — there is no wrong-printer risk. Keep it in its sealed packaging, stored away from bright light, and when fitting day comes, handle the unit by its edges and keep fingers off the drum surface.

Once everything in this box is fitted, what does our reorder list actually look like?

Short: TN850 cartridges, one at a time, as each printer asks. The drums drop off the list almost entirely — at 30,000 pages apiece they will outlast several toner cycles, and a machine only calls for the next drum when its counter or its print quality says so. Two habits keep the records honest. Reset the drum counter through the printer's menu after each drum change, otherwise the machine keeps reporting the old drum's life against the new unit. And judge a drum by its symptoms — repeating marks at regular intervals or a gray haze that fresh toner does not cure — rather than by the calendar.

What is worth checking on the day a toner and drum are swapped together?

Three quick checks catch nearly every problem before it prints. Keep the new drum shielded from light until the moment it goes in, and slide the corona-wire cleaning tab back and forth as the manual describes before closing the machine up. Print a few test pages and look for marks that repeat at the same spacing down the sheet — that pattern points at the drum, while plain fading points at toner. Finally, confirm the drum counter was reset; a machine that still counts the old drum will keep warning about a part you have already replaced. Keep the removed drums out of direct sunlight until they go for recycling.

If one of the four pieces arrives damaged, does the whole bundle have to go back?

No — a damaged piece does not drag the other three back with it. Leave the faulty item unfitted and contact our support team Monday to Friday, 9 AM to 5 PM CST, so the quickest route can be arranged. Genuine Brother products from this store carry a 30-day return window in all cases, and cover beyond the store window rests with Brother's manufacturer warranty; the full process is set out on our shipping and returns page. Reporting the problem inside the window, before the part is installed, keeps every option open.

About This TN850 and DR820 Genuine Brother Bundle

This genuine Brother OEM bundle pairs two TN850 black toner cartridges, rated at 8,000 pages each, with two DR820 drum units rated at 30,000 pages each — priced at $540.14 against an $810.21 list figure. It suits departments standardising on Brother's workgroup platform, where one drum part and one toner part cover an entire fleet of printers and multifunction machines and spares can be pooled instead of duplicated. The complete genuine range sits in the Brother range at Clever Supplies, and orders ship from our IL, PA, GA or CA warehouse.