Xem Studiomeasured geometryLibrary › Hardware › Planar spiral flexure bearing leaves: Ø40 to Ø120, 3-arm and 2-arm…
2-arm variant Ø120 (lower axial stiffness, less radial)
2-arm variant Ø120 (lower axial stiffness, less radial)
Exact dimensions. True size, no printing tolerance added. Threads are plain cylinders at the major diameter.
STEP STL DXF free, CC BY 4.0 (credit "Xem Studio")
Dimensions
| od_mm | 120 |
|---|---|
| hub_mm | 26.4 |
| rim_mm | 14.4 |
| arm_w_mm | 3.5 |
| bore_mm | 8 |
| arm_radial_span_mm | 32.4 |
| rim_hole_circle_mm | 105.6 |
Let your AI pull this. Add
Set it up →https://xemstudio.com/mcp to Claude, ChatGPT, Cursor or any MCP client (free, no account, one minute) and it can look up exact sizes, mating fits and free STEP/STL from every chat.From the full sheet
Planar spiral flexure bearing leaves: Ø40 to Ø120, 3-arm and 2-arm, 0.5 and 2 mm: every size, notes, mating features and sources. What is a spiral flexure bearing and what are its dimensions?
Other sizes
- flexure-40-3arm-w1.6-t0.5
- planar spiral flexure Ø40, 3 arms 1.6 wide, 2.0 thick, hub Ø12 bore Ø4, 3 × Ø3.2 rim holes on R17.6
- 2-arm variant Ø40 (lower axial stiffness, less radial)
- flexure-60-3arm-w2-t0.5
- planar spiral flexure Ø60, 3 arms 2.0 wide, 2.0 thick, hub Ø13.2 bore Ø5, 3 × Ø3.2 rim holes on R26.4
- 2-arm variant Ø60 (lower axial stiffness, less radial)
- flexure-80-3arm-w2.5-t0.5
- planar spiral flexure Ø80, 3 arms 2.5 wide, 2.0 thick, hub Ø17.6 bore Ø5, 3 × Ø3.2 rim holes on R35.2
- 2-arm variant Ø80 (lower axial stiffness, less radial)
- flexure-100-3arm-w3-t0.5
- planar spiral flexure Ø100, 3 arms 3.0 wide, 2.0 thick, hub Ø22 bore Ø8, 3 × Ø3.2 rim holes on R44
- 2-arm variant Ø100 (lower axial stiffness, less radial)
- flexure-120-3arm-w3.5-t0.5
- planar spiral flexure Ø120, 3 arms 3.5 wide, 2.0 thick, hub Ø26.4 bore Ø8, 3 × Ø3.2 rim holes on R52.8