Dây xích chống cong vênh cho cửa sổ đẩy P9.525/P12.700

Ever-power · Specialty Chain Series

Anti-sidebow Chains for
Pushing Window

Pitch P9.525 mm & P12.700 mm  |  Tensile 6.2 – 15.0 kN  |  Min. bend radius 250 mm

* Bush chain: d₁ indicates the external diameter of the bush.

The defining capability of an anti-sidebow chain is lateral pivotability. When positioned correctly in its guide channel, the chain flexes sideways to follow a curved path — something conventional roller chains cannot achieve without binding or buckling. This lateral flex is built into every link through a split two-part construction: the inner link assembly and the outer link assembly. Both are manufactured from high-strength engineering plastic, while the pivot pin and locking bolt are machined from steel. A precision groove on the inner link plate accepts a central protrusion on the outer link, permitting controlled lateral rotation with no longitudinal play.

Adjacent links are joined by a hinge mechanism engineered to pivot around two independent axes simultaneously. The pivot bolt is fixed to the outer link, while the inner link engages through lateral pivot openings defined by separate support plates. Clearance tolerances within the hinge are precisely calibrated: the inner link plates rotate freely relative to the outer link plates in the lateral direction while remaining rigid under longitudinal tensile load. It is this dual-axis geometry that enables sideways bending without sacrificing push-force transmission.

In push-type window actuator systems the chain must transmit a compressive push force along its length while following the curved geometry of the guide rail. A rigid chain would buckle under compression; a laterally flexible roller chain would sag sideways. The anti-sidebow chain is specifically engineered to resist that lateral buckle: it remains stiff enough to push the window panel without deflecting, while still conforming to the rail’s curve. The 250 mm minimum bend radius covers the overwhelming majority of architectural window guide rail geometries used in commercial and industrial buildings.

The P9.525 mm series (06BF33SS, 06BF34, 06CF22) suits compact mechanisms where space limits sprocket diameter and the panel weight is moderate. The P12.700 mm series (08BF6, 415BF4, 08BSSF20, 08BSSF74, P12.7F4) offers higher tensile ratings — up to 15.0 kN on the P12.7F4 — and is preferred for heavier panels or extended push strokes. The stainless steel variants (06BF33SS, 08BSSF20, 08BSSF74) are recommended wherever outdoor exposure, coastal salt air, or high humidity makes corrosion resistance a priority.

Because anti-sidebow chains share pitch dimensions with standard xích con lăn, they can generally be paired with off-the-shelf roller chain sprockets of the matching pitch. However, the enlarged pin-to-bushing clearances alter the engagement geometry. For demanding applications — high-cycle actuators, precision positioning, or heavy push loads — Ever-power recommends sprockets specifically selected for anti-sidebow use. These are available in carbon steel, hardened steel, and stainless steel, with a range of bore diameters and keyway configurations.

When ordering, please specify the chain model number, required tooth count, bore diameter, and any special material or coating requirements. We can also supply guide rails and end stops for a complete push-window drive assembly.

Ever-power is a specialist manufacturer of engineered drive chains for industrial and architectural applications, operating a dedicated production line with equipment and process parameters optimised for the tight dimensional tolerances that lateral-flex performance demands. Every batch is tested for tensile strength, dimensional conformance (pin diameter, inner width, plate height), and lateral-bend performance before shipment.