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Crank stand for a 623 bearing, 40 / 60 / 80 mm
What are the dimensions of a crank stand for a can Stirling engine? · Standard part · basis: 623 bearing (3 × 10 × 4) pocket at the bearing OD; M3 clearance Ø3.4 (ISO 273) feet
Long Earth Society build part. The printed parts for the LES can engine, sized to the cans, syringes, CDs and bearings in the library. The engines
Exact dimensions. Every file is drawn at true size with no printing tolerance. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your printer's or process's clearance before making the part. Mating features
- sizes
- 3 in table
Notes
- An upright 40 wide × 8 thick on a 40 × 24 × 3 foot, in three heights: 40, 60 and 80 mm.
- A Ø10 pocket through the 8 mm upright, centred 8 mm below the top, holds a 623 bearing (fit: press) for the Ø3 crankshaft: shaft height 32, 52 or 72 mm.
- Two Ø3.4 foot holes at (−15, 8) and (15, −8) take M3 screws to the base. A crank uses two stands, one each side.
Sizes
| file | height | shaft axis height | bearing pocket | foot |
|---|---|---|---|---|
| crank-stand-40 | 40 | 32 | Ø10 × 8 | 40 × 24 × 3 |
| crank-stand-60 | 60 | 52 | Ø10 × 8 | 40 × 24 × 3 |
| crank-stand-80 | 80 | 72 | Ø10 × 8 | 40 × 24 × 3 |
Mating features
Drawn at the exact size. Open press, slide, run and socket features by your process's clearance; leave designed gaps and clamp fits as drawn.
| feature | exact | mates with | fit | files |
|---|---|---|---|---|
| stand bearing pockets | Ø10 | 623 bearing | press | crank-stand-* |
| stand foot holes | Ø3.4 | M3 screw clearance | designed | crank-stand-* |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| Wikipedia | Stirling engine | web | CC BY-SA 4.0 (text) |
| Long Earth Society | Can engine build | video, web | LES site |
| Long Earth Society | Engine builds (videos and write-ups) | web, video | LES site |
Free files
★ Free files 3 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| crank-stand-40 | crank stand 40 mm, Ø10 pocket for a 623 bearing (Ø3 shaft), 2 × M3 clearance (Ø3.4) foot holes | STEP · STL |
| crank-stand-60 | crank stand 60 mm, Ø10 pocket for a 623 bearing (Ø3 shaft), 2 × M3 clearance (Ø3.4) foot holes | STEP · STL |
| crank-stand-80 | crank stand 80 mm, Ø10 pocket for a 623 bearing (Ø3 shaft), 2 × M3 clearance (Ø3.4) foot holes | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=can-engine-crank-stand
How it fits
Goes in or on
Ball bearings, 683 to 6210 and flanged F6xx623 pressed in the Ø10 pocketConnects to
Crankshafts Ø3, Ø5 and Ø8 with full-length D-flatØ3 crankshaft through the 623s
Craft sticks 114 × 10 × 2 mm and jumbo 150 × 18 ×…Ø3 skewer as the crankshaft
CD and HDD-platter flywheel hubsØ3-bore hub on the same shaftAlternatives
LTD crank stand for a 623 bearing, axis 112 above…45 mm stand for the LTD engineIn these build lists
Test-tube marble enginecrank and flywheel at the end.You might also need
Questions
What bearing does the crank stand take?
A 623 (3 × 10 × 4) in the Ø10 pocket, for a Ø3 crankshaft or skewer.
How high is the crankshaft on each stand?
8 mm below the top: 32, 52 or 72 mm above the foot for the 40, 60 and 80 mm stands.