12B-2 KettenWulf HFS (Reinforced, 3/4” × 7/16”, DIN 8187) - 5 m Pack (+ 2 Connecting Links)
Roller Chain
Specifications
In the TYMA Product Catalogues you can find this material also described with the abbreviation ST.
Chain Description
12B-2 KettenWulf HFS (Reinforced, 3/4” × 7/16”, DIN 8187) - 5 m Pack (+ 2 Connecting Links) is a special type of duplex drive chain. It is standardized according to ISO 606 (DIN 8187), meaning it is a chain of the European B-series.
The chain consists of outer links with pins and inner links with enhanced bushes, on which freely rotating rollers are mounted. The chain is made of steel. Thanks to its design and the materials used, it offers significantly higher fatigue strength than standard roller chains. It also provides excellent wear resistance, ensuring a long service life.
KettenWulf HFS
KettenWulf HFS roller chains are designed for applications with high loads and dynamic impacts. They rank among the top-performing chains on the market.
Thanks to targeted design and manufacturing enhancements, these roller chains significantly exceed the parameters of standard series. With precision punching of the link plates achieving hole straightness of up to 90%, they offer exceptionally strong press fits. The wider waist of the link plates further improves load distribution. As a result, HFS chains deliver approximately 15–20% higher fatigue strength compared to the KW series (equivalent to 70–80% above the ISO 606 standard), while maintaining excellent length accuracy.
Additional improvements in wear resistance come from using advanced materials for bushes and rollers. Solid bushes are made from alloyed case-hardening steel containing chromium, manganese, and molybdenum, ensuring high surface hardness and excellent resistance to friction and shock. Rollers made from structural C35 steel are fully hardened across all sizes.
Construction
- Inner link – high-precision, wide-waisted profile
- Outer link – high-precision, wide-waisted profile
- Special alloy steel pin (case-hardened or through-hardened according to type)
- Seamless special steel bush with optimally cylindrical shape and high wear resistance
- Through-hardened seamless roller
Typical Applications
12B-2 reinforced roller chains according to DIN 8187 are designed for applications with higher mechanical loads, where standard roller chains might not meet requirements for strength and fatigue resistance.
They are most commonly used as drive chains in demanding operating conditions but can also be fitted with attachments or other auxiliary components for material handling and lifting applications.
Materials
Steel.
Documents for Download
Dimensions and Parameters of DIN 8187 KettenWulf HFS Duplex Roller Chains
TYMA CZ Data Sheets
Czech and English (PDF 258.34 kB)
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Questions about This Product?
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Chain Manufacturer Profile
KettenWulf was founded in 1925 in Kückelheim, Germany. Over the past 90 years, the company has developed from a small-sized factory for sprocket chains into a leading global manufacturer of conveyor chains, drive chains and sprockets.
More than 1400 employees develop, produce and distribute individual solutions in conveying and drive technology for KettenWulf at ten locations in Europe, America and Asia.
The high quality KettenWulf products are used all over the globe in a wide range of industries.