Description
EP-140-2 is a double strand DHA roller-chain configuration built around a 44.450 mm pitch envelope. It is aimed at abrasive industrial duty where dust, fines or degraded lubrication make joint wear a practical design concern.
DHA wear-control concept
DHA chain engineering concentrates on the pin-and-bush sliding joint, where contaminated lubricant, fine mineral particles and poor lubrication access can accelerate elongation. The dimensional envelope follows the selected roller-chain size; the surface-treatment specification is confirmed against load, speed, temperature, contamination and lubrication practice.
Chromium-carbide diffusion treatment is an established industry approach for creating a very hard pin surface. It is materially different from decorative chromium plating. Final treatment details are confirmed with the application rather than inferred from appearance alone.
EP-140-2 technical specifications
| Model | EP-140-2 |
|---|---|
| Pitch P (mm) | 44.450 |
| Roller diameter d1 max (mm) | 25.40 |
| Width between inner plates b1 min (mm) | 25.22 |
| Pin diameter d2 max (mm) | 12.70 |
| Pin length L max (mm) | 103.3 |
| Connecting pin length Lc max (mm) | 107.9 |
| Inner plate depth h2 max (mm) | 41.00 |
| Plate thickness T max (mm) | 5.60 |
| Transverse pitch Pt (mm) | 48.87 |
| Minimum tensile strength Q (kN / lbf) | 344.80 / 78364 |
| Average tensile strength Q0 (kN) | 445.0 |
| Weight per meter q (kg/m) | 15.14 |
Dimensions and strength values are chain-geometry reference data. Replacement projects should verify sprocket condition, shaft alignment, center distance, speed, loading and lubrication method before release.
Where this size fits
Common evaluation areas include automated machinery, packaging equipment, material handling, aggregate and construction equipment, vehicle-production tooling and guarded auxiliary drives. In Japan and Taiwan, China, compact precision machinery often places a premium on alignment and controlled articulation. In the United States, guarding and maintenance access are central. German and Italian machine builders frequently integrate the chain as one part of a complete compliant drive system.
Customer Reviews & Case Studies
Precision machinery
Use: High-cycle compact drive in a clean factory environment
Application note: Stable articulation, controlled wear and close sprocket alignment are the priorities.
Application fit ★★★★★
Automotive & machine building
Use: Dust-exposed transfer or auxiliary power transmission
Application note: The preferred setup pairs wear-focused pin engineering with matched sprockets and disciplined guarding.
Application fit ★★★★★
Material handling
Use: Guarded conveyor drive with periodic wash-down and airborne fines
Application note: Maintenance planning focuses on chain elongation, sprocket tooth condition and safe lubrication access.
Application fit ★★★★☆
