20 mm Shaft Collar (Set Collar), Form B (Taper-pin Hole), DIN 705

The 20 mm shaft collar (DIN 705, form B, taper-pin hole) locks onto a 20 mm shaft with a 5 mm hole for a taper pin, reamed with the shaft; it is 32 mm across and 14 mm wide. Get it as simplified STEP files.

How these parts are made, and what the levels mean: read the method

• Also searched as: 20 mm collar
• Model id: din705-b-d20
• Standard: DIN 705:2019 · size 20 mm

Files

Part key	Simplified
din705-b-d20	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
d1	Bore diameter		20		20	nominal	L1
d2	Outside diameter		32		32	nominal	L1
b	Width		14		14	nominal	L1
d4	Taper-pin diameter		5		5	nominal	L1

Drawing

As a PDF: CC-DIN705-SZ-20.pdf.

The 20 mm form B shaft collar beside the 18 mm

The 20 mm is the largest of the 10 DIN 705 shaft collars published here, from 4 mm to 20 mm.

• Bore diameter (d1): 20 mm on the 20 mm form B shaft collar, against 18 mm on the 18 mm.
• Outside diameter (d2): 32 mm on the 20 mm form B shaft collar, the same on the 18 mm.
• Width (b): 14 mm on the 20 mm form B shaft collar, the same on the 18 mm.
• Taper-pin diameter (d4): 5 mm on the 20 mm form B shaft collar, the same on the 18 mm.

The 20 mm form B shaft collar in its other forms

• 20 mm Shaft Collar (Set Collar), Form A (Set-screw Hole), DIN 705: set-screw thread 6 mm, set-screw length 8 mm, no taper-pin diameter (d4).

Other sizes

• One size smaller: 18 mm Shaft Collar (Set Collar), Form B (Taper-pin Hole), DIN 705, 18 mm bore, 32 mm OD, 14 mm wide, 5 mm pin hole.

Documents

• CC-DIN705-DS-20.pdf: 20 datasheet: values with levels, sources
• CC-DIN705-SZ-20.pdf: 20 drawing: this size's values on the views
• parts.json: the part record of this size (the platform contract)

Sources

dinmark-din705, dinmark-din705-b, fasten-it-din705, fasten-it-din705-b, maedler-din705. Full citations: the method page and this size's datasheet.

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