180 Roller Chain — Strand-Count Comparison
180 is ANSI B29.1 standard roller chain (ISO 36A), 2.25" pitch (57.15 mm). Compare all strand variants below — pitch and outer dimensions are identical across strands; load capacity scales roughly N× with strand count.
Shared Dimensions (all strands)
ANSI B29.1 pins these dimensions to manufacturer-independent values — single- and multi-strand variants of 180 share identical pitch, roller, pin, and plate geometry.
| Designation | ANSI 180 / ISO 36A |
| Pitch | 2.25" (57.15 mm) |
| Roller diameter | 1.406" |
| Width between plates | 1.406" |
| Pin diameter | 0.687" |
| Plate thickness | 0.281" |
| Plate height | 2.134" |
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Per-Strand Load & Mass
Load capacity and mass scale roughly linearly with strand count. The sprocket must match (multi-strand sprockets carry N parallel tooth tracks). A dash (—) means the manufacturer doesn't publish that value for that strand variant.
| Canonical PN | Strands | Min tensile (lb) | Avg tensile (lb) | Allowable load (lb) | Mass (lb/ft) | Detail |
|---|---|---|---|---|---|---|
| 180-1 | single-strand | 63,280 | 83,110 | 13,670 | 9.04 | 180-1 → |
| 180-2 | double-strand | 126,560 | 166,220 | 23,240 | 17.82 | 180-2 → |
| 180-3 | triple-strand | 189,840 | 249,340 | 34,170 | 25.68 | 180-3 → |
| 180-4 | 4-strand | 253,120 | 332,450 | 45,110 | 34.2 | 180-4 → |
| 180-5 | 5-strand | 316,400 | 415,570 | 53,310 | 42.73 | 180-5 → |
| 180-6 | 6-strand | 379,680 | 498,680 | 62,880 | 51.25 | 180-6 → |