What is a chain coupling
A chain coupling connects two chain wheels (one on each shaft) using a duplex roller chain, linking both wheels and enclosed by a protective cover. The design is simple and robust, allowing easy installation and removal by opening the chain, without moving the shafts.
Nibora Ltd. stocks a range of sizes in which the chain wheels are made from C45 steel, covering a wide range of applications for heavy, dusty or damp industrial environments, where durability takes priority over precise vibration damping.
Technical data
| SIZE | Chain pitch (mm) | Drill hole (mm) | Bore min (mm) | Bore max (mm) | OD (mm) | L (mm) | C (mm) | D (mm) | E (mm) | A (mm) | B (mm) | Kg |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 3012 | 9.525 | 12 | 13.5 | 16 | 45 | 65 | 27.2 | 29.5 | 6 | 69 | 63 | 0.53 |
| 4012 | 12.7 | 12 | 14 | 22 | 62 | 79.4 | 36 | 36 | 7.4 | 77 | 72 | 1.03 |
| 4014 | 12.7 | 12 | 14 | 28 | 69 | 79.4 | 45 | 36 | 7.4 | 84 | 75 | 1.43 |
| 4016 | 12.7 | 13.5 | 16 | 32 | 77 | 87.4 | 51.5 | 40 | 7.4 | 92 | 72 | 1.85 |
| 5014 | 15.875 | 14.5 | 17 | 35 | 86 | 99.7 | 56 | 45 | 9.7 | 101 | 85 | 2.62 |
| 5016 | 15.875 | 14.5 | 18 | 40 | 96 | 99.7 | 64 | 45 | 9.7 | 110 | 87 | 3.25 |
| 5018 | 15.875 | 16 | 18 | 45 | 106 | 123.5 | 73.5 | 45 | 9.7 | 122 | 85 | 4.20 |
| 6018 | 19.05 | 20 | 22 | 56 | 127 | 123.5 | 89.5 | 56 | 11.5 | 147 | 105 | 7.75 |
| 6020 | 19.05 | 20 | 24 | 60 | 139 | 123.5 | 102.5 | 56 | 11.5 | 158 | 105 | 9.58 |
| 6022 | 19.05 | 20 | 28 | 71 | 151 | 123.5 | 115 | 56 | 11.5 | 168 | 117 | 11.6 |
| 8018 | 20.4 | 20 | 32 | 80 | 169 | 141.2 | 115 | 63 | 15.2 | 190 | 129 | 15.1 |
| 8020 | 20.4 | 20 | 36 | 90 | 185 | 145.2 | 125 | 65 | 15.2 | 210 | 137 | 18.7 |
| 8022 | 20.4 | 20 | 40 | 100 | 202 | 157.2 | 142 | 71 | 15.2 | 226 | 137 | 24.5 |
| 10020 | 31.75 | 25 | 45 | 110 | 233 | 178.8 | 162 | 80 | 18.8 | 281 | 153 | 36.5 |
| 12018 | 38.1 | 35 | 50 | 125 | 256 | 202.7 | 173 | 90 | 22.7 | 307 | 181 | 48.4 |
| 12022 | 38.1 | 35 | 56 | 140 | 304 | 222.7 | 213 | 100 | 22.7 | 357 | 181 | 75.8 |
Frequently asked questions
What conditions suit a chain coupling?
Heavy industrial drives in dusty, damp or abrasive environments — the design is simple and durable, but requires periodic chain lubrication.
Is installation/removal easy?
Yes — the chain is opened and removed directly from both chain wheels, without any axial shaft displacement.
What is the price of a chain coupling?
Contact Nibora Ltd. for a quote based on the selected size.