Makita BO5031K: problems, parts and running costs
Checked: 2026-10-19
Summary
A corded 5-inch variable-speed random orbit sander sold as a kit with a case and a dust bag, with a 3.0 A motor, 4,000-12,000 OPM dial and a 1-year warranty. Its weak point is dust collection: the bag may not attach reliably and fills quickly, and one comparison lists no vacuum port. Running cost is abrasive discs, which are sold separately.
Common problems and fixes
- Dust bag may not attach reliably — Timber Frame HQ says owner negatives “tend to point to the dust collection bag. It may not always attach in a reliable fashion”; The Best Home Tools adds that the bag is small and fills quickly. [4][5]
- No confirmed vacuum port — Timber Frame HQ lists the BO5031K with “Vacuum Port: No”, while Makita’s flyer says it connects to Makita vacuums without an adapter; the sources do not agree. [4][2]
- Abrasive discs sold separately — the US product page lists abrasive paper as sold separately, so discs are an out-of-pocket cost from the first use. [1][2]
Parts and consumables
- Dust bag (part 166078-4) — included in the kit; replacement dust bags sold as accessories. [1][2][3]
- Paper filters — sold as accessories for the dust bag/box. [3]
- Dust box — sold as an accessory. [3]
- Vacuum hose — sold as an accessory. [3]
- 5-inch 8-hole hook-and-loop abrasive discs — sold separately; the kit includes one 120-grit disc. [1][2]
Yearly running cost
Not enough data to state a typical yearly figure. The main recurring cost is abrasive discs, which are sold separately, with optional replacement dust bags, paper filters, dust boxes and vacuum hoses. [1][2][3]
When it is a good buy
Master Wholesale listed the kit at $139.00. [7] At that money it is a light, low-vibration variable-speed sander with a ball-bearing drive, with the case and bag in the box. It is not the class leader on dust extraction or two-handed control. If vacuum extraction or a front handle matters, compare the Makita BO5041K (front handle, vacuum port, named “best for the money” by Pro Tool Reviews) or the Bosch ROS20VSC (vacuum adapter). [4][6]