Descrizione
ANSI 50 roller chain operates on a 5/8 inch (15.875 mm) pitch and is the standard step up from the 40 series for drives requiring greater load capacity without moving to the wider 3/4 inch pitch of the 60 series. The 50-1 simplex and 50-2 duplex cover the majority of medium-duty industrial drive requirements in North American-specification equipment. Ever Power manufactures both strand configurations to ASME B29.1, with case-hardened alloy steel pins at 58–64 HRC, through-hardened bushings at 50–58 HRC, and shot-peened rollers. The ISO equivalent designation is 10A-1 (simplex) — always confirm the correct standard before ordering for an existing drive, as inner width differs slightly between the two standards.
Full Specification Table — ANSI 50 Series
| Numero di catena | Strands | Passo (mm) | Diametro del rullo (mm) | Larghezza interna (mm) | Diametro del perno (mm) | Min. Tensile (kN) | Peso (kg/m) |
|---|---|---|---|---|---|---|---|
| 50-1 | 1 | 15.875 | 10.16 | 9.40 | 5.08 | 21.8 | 0.92 |
| 50-2 | 2 | 15.875 | 10.16 | 9.40 | 5.08 | 43.6 | 1.80 |
Per ASME B29.1-2011. ISO 10A-1 inner width 9.65 mm vs ANSI 50-1 at 9.40 mm — verify before substituting on existing sprockets.
ISO Cross-Reference: ANSI 50-1 / ISO 10A-1 share the 15.875 mm pitch but differ in inner width (9.40 vs 9.65 mm). Not interchangeable with ISO 10B-1 (9.65 mm inner width, 10.16 mm roller — same roller diameter but different standard family).
Material and Construction
Piatti laterali
SAE 1040–1050 cold-stamped. Work-hardened at pitch holes for fatigue resistance. Alloy steel (20CrMnTi) available for heavy-duty variants.
Perni e boccole
Gas-carburised pins 58–64 HRC. Through-hardened bushings 50–58 HRC, controlled interference fit. Proof-load tested to 50% min. tensile per batch.
rulli
Shot-peened 58–64 HRC carbon steel. Peening introduces compressive residual stress extending fatigue life 20–35% over unpeened production.
✓
Proof-load tested
50% min. tensile
●
ISO 9001:2015
certified
▸
EN 10204 2.1
3.1 on request
Typical Applications — ANSI 50 Series
Ordering and Supply
Azione
3 m, 5 m, 10 ft reels • Clip connecting links • Offset links for odd-pitch loops
Stainless variants
SS304 / SS316L • 3–5 day lead time • 3.1 mill cert standard
Costume
Attachment plates, coatings • 50 m MOQ • 4–6 weeks from drawing approval
Request a quote on ANSI 50 roller chain
Standard sizes quoted same day • UK delivery 1–3 working days
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