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Metric shafts Ø3 to Ø10 with D-flats and clip grooves

What does a 5 mm or 8 mm shaft with a D-flat and clip grooves look like dimensionally? · Hardware · basis: Round shafts at nominal Ø; D-flat 0.1 × d deep over 20 mm at one end; DIN 6799 and DIN 471 groove sizes

Long Earth Society build part. Flywheel and crank shafts with their clips and collars. 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
10 in table

Notes

  • Round shafts at nominal Ø with 0.5 × 45° chamfers on both ends: Ø3 × 100, Ø4 × 100, Ø5 × 100 and × 200, Ø6 × 150, Ø8 × 200 and × 300, Ø10 × 200.
  • The Ø5, Ø6 and Ø8 shafts carry a D-flat 0.1 × d deep and 20 mm long at one end: 4.5, 5.4 and 7.2 across the flat. A set screw seats on it.
  • shaft-8x100-grooved: Ø8 × 100 with DIN 471 circlip grooves Ø7.6 × 0.9 starting 10 and 88 mm from the end, and the 20 mm D-flat. shaft-5x80-grooved: Ø5 × 80 with DIN 6799 E-clip grooves Ø4.0 × 0.7 at 8 and 70 mm, and the D-flat.
  • For the full-length D-flat crankshafts, see the Stirling crankshafts page; these shafts have the short motor-style flat.

Sizes

fileØlengthD-flatgrooves
shaft-3x1003100——
shaft-4x1004100——
shaft-5x10051000.5 × 20 (4.5 across)—
shaft-5x20052000.5 × 20 (4.5 across)—
shaft-6x15061500.6 × 20 (5.4 across)—
shaft-8x20082000.8 × 20 (7.2 across)—
shaft-8x30083000.8 × 20 (7.2 across)—
shaft-10x20010200——
shaft-8x100-grooved81000.8 × 20DIN 471 Ø7.6 × 0.9 at 10, 88
shaft-5x80-grooved5800.5 × 20DIN 6799 Ø4.0 × 0.7 at 8, 70

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.

featureexactmates withfitfiles
shaft ØØ3 / 4 / 5 / 6 / 8 / 10bores of the mating partsslideshaft-*
D-flat0.1 d deep × 20 (Ø5 → 4.5 across)set screwdesignedshaft-*
clip groovesDIN 6799 Ø4.0 × 0.7 / DIN 471 Ø7.6 × 0.9E-clip / circlipdesignedshaft-*

Where the files are

Other publishers' files are linked, not hosted. "verify" = check the license at the link before commercial use.

WikipediaCirclipwebCC BY-SA 4.0 (text)
WikipediaRetaining ringwebCC BY-SA 4.0 (text)
McMaster-CarrShaft collars (free STEP per part, for your own design use; no redistribution)STEP, PDFMcMaster-Carr site terms verify
McMaster-CarrRetaining rings (free STEP per part, for your own design use; no redistribution)STEP, PDFMcMaster-Carr site terms verify
Long Earth SocietyEngine and rig buildsweb, videoLES site

Free files

★ Free files 10 parts. Generated by Xem Studio from the standard; threads are plain cylinders at major diameter. CC BY 4.0. index.json

shaft-3x100precision shaft Ø3 × 100STEP · STL
shaft-4x100precision shaft Ø4 × 100STEP · STL
shaft-5x100precision shaft Ø5 × 100 with a 20 mm D-flat, 0.5 deep (4.5 across the flat)STEP · STL
shaft-5x200precision shaft Ø5 × 200 with a 20 mm D-flat, 0.5 deep (4.5 across the flat)STEP · STL
shaft-6x150precision shaft Ø6 × 150 with a 20 mm D-flat, 0.6 deep (5.4 across the flat)STEP · STL
shaft-8x200precision shaft Ø8 × 200 with a 20 mm D-flat, 0.8 deep (7.2 across the flat)STEP · STL
shaft-8x300precision shaft Ø8 × 300 with a 20 mm D-flat, 0.8 deep (7.2 across the flat)STEP · STL
shaft-10x200precision shaft Ø10 × 200STEP · STL
shaft-8x100-groovedØ8 × 100 with DIN 471 circlip grooves (Ø7.6 × 0.9) at 10 and 88 mm and a 20 mm D-flat, 0.8 deepSTEP · STL
shaft-5x80-groovedØ5 × 80 with DIN 6799 E-clip grooves (Ø4.0 × 0.7) at 8 and 70 mm and a 20 mm D-flat, 0.5 deepSTEP · STL

Plain text: sheet.txt · JSON: /api/geometry?object=metric-shafts

Metric shafts Ø3 to Ø10 with D-flats and clip grooves, isometric render of a generated part
Render of shaft-8x100-grooved from the free STEP; not to scale.

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Questions

How deep is a D-flat on a 5 mm shaft?

0.5 mm (4.5 across the flat), 20 mm long at one end on these files.

Where are the grooves on the grooved 8 mm shaft?

DIN 471 circlip grooves Ø7.6 × 0.9 at 10 and 88 mm from the end of the Ø8 × 100 shaft.