A steel lift arm with a gas spring that raises a slatted bed base on one side of a storage bed box.
Category: Beds › Single-Level Beds › Bed Lift Mechanisms
By Huu Khanh Nguyen · Updated November 9, 2026
| Name | Default | Unit |
|---|---|---|
| Length | carrierLength | mm |
| Depth | carrierDepth | mm |
| Drop | armDrop | mm |
| Carrier Length | 1500 | mm |
| Carrier Depth | 40 | mm |
| Arm Drop | 110 | mm |
| Lift Angle | 0 | ° |
| Hinge Along | 120 | mm |
| Hinge Drop | armDrop - 13.5 | mm |
| Bar Angle | angle - Math.asin(((751 - pivotAlong) * Math.sin(angle * Math.PI / 180) + (pivotDrop - 27) * (1 - Math.cos(angle * Math.PI / 180))) / 507) * 180 / Math.PI | ° |
| Spring Start X | 751 + 138 * Math.cos(barAngle * Math.PI / 180) - 7 * Math.sin(barAngle * Math.PI / 180) | mm |
| Spring Start Z | -27 + 138 * Math.sin(barAngle * Math.PI / 180) + 7 * Math.cos(barAngle * Math.PI / 180) | mm |
| Spring Run | pivotAlong + (1412 - pivotAlong) * Math.cos(angle * Math.PI / 180) - (pivotDrop - 20) * Math.sin(angle * Math.PI / 180) - springX | mm |
| Spring Rise | -pivotDrop + (1412 - pivotAlong) * Math.sin(angle * Math.PI / 180) + (pivotDrop - 20) * Math.cos(angle * Math.PI / 180) - springZ | mm |
| Spring Tilt | Math.atan2(springDz, springDx) * 180 / Math.PI | ° |