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What Drum Unit Does the Brother HL-5450DN and HL-6180DW Use?

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The Brother HL-5450DN and HL-6180DW are monochrome laser printers that use the Brother DR-720 drum unit along with the TN-720 (standard yield) and TN-750 (high yield) toner cartridges. Some configurations also support the super high yield TN-780. The drum and toner are separate consumables.

DR-720 Drum and TN-720 / TN-750 / TN-780 Toner at a Glance

Consumable Part Number Page Yield Type
Drum Unit DR-720 ~30,000 pages Drum
Standard Toner TN-720 ~3,000 pages Black
High Yield Toner TN-750 ~8,000 pages Black
Super High Yield Toner TN-780 ~12,000 pages Black

The DR-720 drum and TN-720/TN-750/TN-780 toner family are shared across the Brother HL-5440D, HL-5450DN, HL-5470DW, HL-6180DW, DCP-8110DN, DCP-8150DN, DCP-8155DN, MFC-8510DN, MFC-8710DW, MFC-8810DW, MFC-8910DW, and MFC-8950DW, making it a high-volume drum and cartridge family that is widely stocked in genuine, remanufactured, and compatible versions.

Save on the DR-720 Drum and TN-720 / TN-750 / TN-780 Toner

Shop our discounted DR-720 drum unit, plus TN-720, TN-750, and TN-780 cartridges, for the Brother HL-5450DN and HL-6180DW.

How to Replace the Drum Unit

  1. Open the front cover of the printer and remove the drum and toner cartridge assembly together.
  2. Push down the green lock lever and remove the toner cartridge from the old DR-720 drum.
  3. Unpack the new DR-720 drum unit and install your toner cartridge into it until it locks in place.
  4. Slide the new assembly back into the printer and close the front cover.
  5. Reset the drum counter from the printer menu so future drum alerts are accurate.

Troubleshooting Tips

  • Replace Drum warning: Your printer will display a Replace Drum message when the DR-720 nears end of life.
  • Repeating marks on the page: Spots that recur at fixed intervals usually indicate a drum that needs replacement.
  • Faded or streaky prints: Try swapping in a fresh TN-750 or TN-780 toner first; if quality does not improve, replace the DR-720 drum.
  • Drum reset: Always reset the drum counter after installing a new DR-720 so the printer reports correct drum life.

Shop Compatible Drum Units at Castle Ink

Save 50–70% on replacement drum units for the Brother HL-5450DN and HL-6180DW. Guaranteed to work — backed by Castle Ink's compatibility guarantee.

Buy a Drum Unit for the Brother HL-5450DN and HL-6180DW on Amazon: Brother HL-5450DN and HL-6180DW drum unit on Amazon

See also: Best printers that don't lock you into OEM ink | Printer Ink Cost Calculator

Written and reviewed by — Founder of Castle Ink, 20+ years in the printer & imaging supplies industry.

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