Lynx SH Super Heavy Chain
Lynx SH (Super Heavy) series chain is the highest-strength variant in the Lynx roller chain line, offering up to 40% higher tensile strength than standard ANSI chain of the same pitch. Used in extreme-duty applications where even XD chain has marginal capacity: rolling mills, large port cranes, draglines, and continuous casting equipment. SH chain is dimensionally compatible with standard ANSI sprockets in pitches #100 through #240.
Key Features
- Up to 40% higher tensile strength than standard ANSI chain
- Available in #100 through #240 pitches
- Single, double, and triple strand
- Cottered and riveted construction
- Compatible with standard ANSI sprockets
- Extra-thick side plates for maximum fatigue resistance
Common Applications
- Steel mill rolling lines
- Continuous casting equipment
- Large port cranes and draglines
- Mining excavators and shovels
- Heavy-duty cement and aggregate equipment
- Pulp & paper machine drives
Frequently Asked Questions
When is SH chain appropriate over XD?
Choose SH chain when (1) operating loads consistently exceed XD chain working load capacity, (2) shock loading is severe and routine, or (3) operating life requirements are exceptionally long and downtime cost is critical. SH chain costs significantly more than XD, only justified when XD service life is also inadequate.
Are SH chain dimensions identical to standard ANSI?
Yes. SH chain follows the standard ANSI B29.1 dimensional envelope for the pitches available (#100-#240). Roller diameter, pin diameter, and pitch are identical to standard chain. The strength advantage comes from premium materials and construction, not larger size.
Why isn't SH available below #100?
Smaller pitches don't typically encounter loading levels that justify SH construction. Below #100, XD or H-series chain provides adequate strength margin for almost any application. The cost premium of SH is only economic in the largest sizes where loads are extreme and failure consequences are severe.
Can I phase in SH chain alongside standard chain?
Yes, since SH is dimensionally compatible, you can upgrade specific drive sections to SH while maintaining standard chain on lower-stress sections. However, within a single drive (single chain loop), use only one chain grade, don't splice SH and standard chain together.
