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HDS-10S-MR/WT lid stay is a medium duty, right-hand soft-closing lid stay from Sugatsune America designed for a downward-opening flap door. This stay supports flap doors that open down, so the front panel can act as a work or access surface while controlled by the mechanism. The lid stay is intended for use with piano, butt, or drop hinges (SDH-001, SDH-P), so it integrates into common hinge layouts used in cabinets and casework. When pushed to close, the HDS-10S is designed to self close and soft close, which pulls the door shut and slows the final movement. That action helps manage closing force on the door and cabinet, which matters for repeated use in working environments. The lid stay is described as medium duty, aligning its torque range with typical cabinet flap door weights in this class.
The torque calculation for this lid stay is defined as: Torque = Door Height x 1/2 x Door Weight, so installers can translate door dimensions and mass into a torque value for selection. K-Type is rated for 60 to 95 kgf.cm (52 to 82 lbs. inch) per pair, providing a working range for lighter medium-duty flap doors. M-Type covers 95 to 130 kgf.cm (82 to 112 lbs. inch) per pair, targeting somewhat heavier fronts within the same family. H-Type spans 110 to 160 kgf.cm (95 to 138 lbs. inch) per pair, addressing higher torque requirements in the medium duty category. S-Type ranges from 140 to 180 kgf.cm (121 to 156 lbs. inch) per pair, covering the upper end of the specified torque spectrum.
This lid stay is specified for a downward-opening flap door, so it supports applications where the door swings down to provide access, such as front-opening cabinets or compartments. Because it is used with piano, butt, or drop hinges (SDH-001, SDH-P), the stay fits projects that already rely on these hinge types for strength along the door edge. The stay operates on a right-hand configuration, matching the orientation requirements described as "RIGHT" in the product information. When pushed to close, the HDS-10S is designed to self close and soft close, so the flap transitions from open to closed in a controlled way driven by the hardware. That behavior helps manage the motion of the door in everyday use and can reduce abrupt door movement in the downward-opening layout.
The specified torque calculation, Torque = Door Height x 1/2 x Door Weight, ties door size and weight directly to the stay selection so the medium duty hardware can be matched to the flap design. K-Type with 60 to 95 kgf.cm (52 to 82 lbs. inch) per pair serves doors whose height and weight generate torque within that band, supporting balanced opening and closing motion. M-Type with 95 to 130 kgf.cm (82 to 112 lbs. inch) per pair addresses projects where the door torque falls in a higher range but still within medium duty needs. H-Type with 110 to 160 kgf.cm (95 to 138 lbs. inch) per pair works where torque demands move further up, while S-Type with 140 to 180 kgf.cm (121 to 156 lbs. inch) per pair is suited to the top of the listed torque span. Using the stay in pairs is specified, so the torque capacity is understood as shared across two units on the flap door.
The HDS-10S-MR/WT lid stay is designed for a downward-opening flap door, so it supports fronts that pivot down to open rather than lifting upward.
This soft-closing lid stay is specified for use with piano, butt, or drop hinges (SDH-001, SDH-P), so it integrates into hinge setups using those types.
The HDS-10S is designed so that when the flap door is pushed to close, it self closes and soft closes, pulling the door shut while slowing the final movement.
This lid stay is described as medium duty because its specified torque ranges, from 60 to 180 kgf.cm per pair depending on type, fit flap doors in that loading category.
For this downward-opening stay, torque is defined as Door Height x 1/2 x Door Weight, which ties the flap dimensions and mass to the appropriate torque range.
The HDS-10S-MR/WT lid stay is specified to be used in pairs, so the torque capacity and motion control are based on two stays supporting the flap door.
The HDS-10S-MR/WT lid stay from Sugatsune America is a medium duty, right-hand stay for downward-opening flap doors working with piano, butt, or drop hinges (SDH-001, SDH-P). Its defined torque calculation and four torque ranges (K, M, H, S) give clear parameters for aligning flap height and weight with hardware capacity. When pushed to close, the stay is designed to self close and soft close, managing the closing motion for repeated use. For projects calling for a downward-opening flap door with controlled motion in the medium duty range, this lid stay provides a clearly specified option.