Two-part adhesives, including epoxy adhesives and methacrylate adhesives, are commonly sold in cartridges containing the A and B parts, which get mixed by static mixer nozzles when dispensed.
We've put together some basic formulas to help you estimate how many epoxy cartridges your application will require.
Calculating Number of Units Per Epoxy Cartridge
If you're using epoxy cartridges for product assembly, it can be helpful to estimate how many units will be covered by each epoxy cartridge.
You need to know a couple things:
- Your bead diameter
- Your bead length per unit
With your bead diameter and cartridge size in mind, check the chart below to determine the bead length provided by each epoxy cartridge. Then use the following formula to calculate the number of units each epoxy cartridge will cover:
Formula:
Bead Length Per Cartridge from Table / Your Bead Length Per Unit = Number of Units Per Partridge
Example:
41 ft / 2 ft = 20.5 units per cartridge
(with 1/4" bead, 2 ft per unit, 400ml cartridges)
Calculating Number of Epoxy Cartridges Required
If you're getting ready to place an order for epoxy cartridges, it can be helpful to estimate the number of cartridges required to produce a certain number of units.
First determine:
- Your bead diameter
- Your bead length per unit
Check the chart below to determine the bead length provided by each epoxy cartridge. This is based on the cartridge size you use. Then use the following formula to calculate the number of units each epoxy cartridge will cover.
Formula:
(Your Bead Length Per Unit * Number of Units) / Bead Length Per Cartridge from Table = Cartridges Required
Example:
(2 ft * 2000 units) / 41 ft = 98 cartridges required
(with 1/4" bead, 2 ft per unit, 2000 units, 400 ml cartridges)
Epoxy Bead Length by Cartridge Size
Please note that these figures are approximate and should only be used for estimates.
| IMPERIAL | Cartridge Size | ||||||
|---|---|---|---|---|---|---|---|
| Bead Diameter | 40 ml | 50 ml | 200 ml | 375 ml | 400 ml | 485 ml | 600 ml |
| 1/8" | 17 ft | 21 ft | 83 ft | 155 ft | 166 ft | 201 ft | 249 ft |
| 3/16" | 7.4 ft | 9.2 ft | 37 ft | 69 ft | 74 ft | 89 ft | 111 ft |
| 1/4" | 4.1 ft | 5.2 ft | 21 ft | 39 ft | 41 ft | 50 ft | 62 ft |
| 5/16" | 2.7 ft | 3.3 ft | 13 ft | 25 ft | 27 ft | 32 ft | 40 ft |
| 3/8" | 1.8 ft | 2.3 ft | 9 ft | 17 ft | 18 ft | 22 ft | 28 ft |
| 1/2" | 1.0 ft | 1.3 ft | 5.2 ft | 10 ft | 10 ft | 13 ft | 16 ft |
| METRIC | Cartridge Size | ||||||
|---|---|---|---|---|---|---|---|
| Bead Diameter | 40 ml | 50 ml | 200 ml | 375 ml | 400 ml | 485 ml | 600 ml |
| 0.3 cm | 5 m | 6.3 m | 25.2 m | 47.2 m | 50.4 m | 61.1 m | 75.6 m |
| 0.48 cm | 2.2 m | 2.8 m | 11.2 m | 21 m | 22.4 m | 27.7 m | 33.6 m |
| 0.6 cm | 1.3 m | 1.6 m | 6.3 m | 11.8 m | 12.6 m | 15.3 m | 18.7 m |
| 0.8 cm | 0.8 m | 1 m | 4 m | 7.6 m | 8.1 m | 9.8 m | 12.1 m |
| 0.95 cm | 0.6 m | 0.7 m | 2.8 m | 5.2 m | 5.6 m | 6.8 m | 8.4 m |
| 1.3 cm | 0.3 m | 0.4 m | 1.6 m | 3 m | 3.1 m | 3.8 m | 4.7 m |
Need Advice on Epoxy?
Our team of adhesive experts have tested hundreds of epoxy products and can help you determine the right epoxy for needs. Don't hesitate to contact us for advice on your application.