Xem Studiomeasured geometryLibrary › Stirling engines › Drives & mechanisms ·
Crank stands with a 625 pocket, 40 and 60 mm axis height
What holds a 5 mm crankshaft above a base plate on 625 bearings? · Hardware · basis: Upright with a Ø16 × 5 pocket at the 625 OD; slotted foot for M3 at 42 mm
Long Earth Society build part. The connectors between rods, cranks and drives on the LES engines. 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
- 2 in table
Notes
- A 30 wide × 8 thick upright with a rounded top (R15) on a 50 × 24 × 3 foot. Shaft axis 40 or 60 mm above the foot's underside; overall 55 or 75 tall.
- A Ø16 × 5 pocket (625 OD) on one face at the axis, and a Ø11.2 clearance hole through so the Ø5 shaft passes without contact.
- Two slots 3.4 × 10 in the foot, 42 mm apart, for M3 into the gamma base plate slots. Two stands carry one shaft.
Sizes
| file | axis height | overall height | clearance hole | foot | |
|---|---|---|---|---|---|
| crank-stand-625-h40 | 40 | 55 | Ø16 × 5 | Ø11.2 | 50 × 24 × 3, slots 3.4 at 42 |
| crank-stand-625-h60 | 60 | 75 | Ø16 × 5 | Ø11.2 | 50 × 24 × 3, slots 3.4 at 42 |
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 |
|---|---|---|---|---|
| crank-stand bearing pocket | Ø16 | 625 bearing | press | crank-stand-* |
| crank-stand foot slots | 3.4 wide | M3 screw clearance | designed | crank-stand-* |
| crank-stand shaft clearance | Ø11.2 | Ø5 shaft (no contact) | designed | crank-stand-* |
Where the files are
Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.
| Long Earth Society | Tri-clamp Stirling engine builds | web, video | LES site |
Free files
★ Free files 2 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json
| crank-stand-625-h40 | crank stand, Ø5 shaft axis 40 mm up, Ø16 × 5 pocket for a 625 bearing, Ø11.2 shaft clearance, 50 × 24 × 3 foot with 2 × M3 slots 3.4 × 10 (along the shaft) on 42 mm centres across the shaft; two carry one crankshaft and seat on the gamma base plate's slots | STEP · STL |
| crank-stand-625-h60 | crank stand, Ø5 shaft axis 60 mm up, Ø16 × 5 pocket for a 625 bearing, Ø11.2 shaft clearance, 50 × 24 × 3 foot with 2 × M3 slots 3.4 × 10 (along the shaft) on 42 mm centres across the shaft; two carry one crankshaft and seat on the gamma base plate's slots | STEP · STL |
Plain text: sheet.txt · JSON: /api/geometry?object=crank-stands-625
How it fits
Parts that fit it
Counterweighted crank discs, Ø5 bore, 10 to 30 mm…on the shaft beside the 625 stand
Flywheels Ø100–Ø200 with hex-nut rim pocketson the Ø5 shaft outside the standGoes in or on
Base plate for 1.5, 2 and 3 in tri-clamp Stirling…M3 through the foot slots into the plate slotsConnects to
Ball bearings, 683 to 6210 and flanged F6xx625 in the Ø16 pocket
Crankshafts Ø3, Ø5 and Ø8 with full-length D-flatØ5 shaft through the 625Also needed
Shaft spacers for Ø3, Ø5 and Ø8 shafts, 1 to 5 mm1 mm gap to the crank discIn these build lists
Tri-clamp tee diaphragm gamma, 2 inA tea-light gamma in 2 in tri-clamp: displacer in a 3 in spool, a short-outlet t…Questions
What bearing goes in the crank stand?
A 625 (5 × 16 × 5) in the Ø16 × 5 pocket.
How high is the crankshaft on the stands?
40 or 60 mm from the bottom of the foot to the shaft axis.