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Front View: Closed Rear View: Closed
Front View: Closed Rear View: Closed
Front View: Open for Rigging Rear View: Open for Rigging
Front View: Open for Rigging Rear View: Open for Rigging

Technical Details

I acquired my Xinda from Suntek in 2017.

My Xinda is 83 mm. long, 187 mm. wide, 40 mm. high, and weighs 398 g.

The Xinda is a small pulley with an eccentric cam mounted on a suspended frame. The pulley side plates are made from 3.1 mm. aluminum sheet. They are bent inward at the top in a dog-leg until they nearly meet at the 18 mm. clip-in hole. THe side plates can turn on the axle to open for rigging. The sheave is turned from aluminum alloy and covered with black paint. It is 14.6 mm. thick and 56 mm. in diameter, with a semicircular rope groove with an inner diameter of 52 mm.

The cam is a skeletonized casting covered with black paint. The cam radius increases from 31 to 51 mm. over an angle of 48°, giving a 31° cam angle. The cam has number of small conical teeth, all of which have their axes sloping slightly downward with respect to the cam face. The tooth pattern is (3)(4.H)^2(3.H)^2(3.2.2) where an "H" represents a mud relief hole. A spring-loaded manual safety bar is mounted on the bottom of the cam. The normal action of the spring holds the safety against the cam. When the cam is opened, the shell interferes with the safety bar, thus preventing opening the cam. If the safety bar is moved away from the cam (opposing the spring), it will clear the shell and the cam will open. At full open the safety can be released and the spring will hold the safety against the back of the shell. This provides a means of locking the cam open. A bent tab on the safety bar assists in operating the safety mechanism.

The front plate is printed with a strength rating illustration for pulley use (12.5 kN per side, 25 kN total), a strength rating illustration for cam use (4 kN per side, 8 kn total), "MAX 16 mm" (applies for pulley-only use), "MAX 12 mm" (applies for cam use), "CE EN12278," and "CE EN567." The cam support is printed with the Xinda logo and "XinDA." The rope channel is printed with a "8-12mm" and a hollow down-pointing arrow.


The spring-loaded steel cam is essentially the same as the cam on the SUT eccentric cam ascender (although not the Xinda!), but the cam safety is different.

The Xinda is derived from the Rock Exotica Wall Hauler and/or Petzl Wall Hauler, but it is heavier and features a more robust cam. I would trust the Xinda for heavier loads than the others, but not human loads.

The XINDA should never be used to be used to support human loads.