30206 Tapered Roller Bearing (Taper Roller Bearing), ISO 355

For a 30 mm shaft and a 62 mm housing bore, the 30206 tapered roller bearing (ISO 355) is 17.25 mm wide. Modeled as simplified STEP files.

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

• Also searched as: 30206 bearing
• Model id: iso355-30206
• Standard: ISO 355 · size 30206

Files

Part key	Simplified
iso355-30206	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
d	Bore diameter		30		30	nominal	L1
D	Outside diameter		62		62	nominal	L1
T	Total width		17.25		17.25	nominal	L1
B	Cone width		16		16	nominal	L1
C	Cup width		14		14	nominal	L1
r1	Cone back face chamfer dimension	1			1	single limit (min), modeled at the limit	L1
r3	Cup back face chamfer dimension	1			1	single limit (min), modeled at the limit	L1
d1	Cone back face rib diameter		45.3 ref		45.3	reference value	L0 (ref: one source)
Y	Axial load factor		1.6		1.6	nominal	L1
alpha	Cup half angle		14.04		14.04	nominal	L0 (nom: one source)

Drawing

As a PDF: CC-ISO355-SZ-30206.pdf.

The 30206 tapered roller bearing beside the 32006X and the 32007X

The 30206 is number 8 of the 16 ISO 355 tapered roller bearings published here, listed from 30202 to 30210.

• Bore diameter (d): 30 mm on the 30206 tapered roller bearing, against 30 mm on the 32006X and 35 mm on the 32007X.
• Outside diameter (D): 62 mm on the 30206 tapered roller bearing, against 55 mm on the 32006X and 62 mm on the 32007X.
• Total width (T): 17.25 mm on the 30206 tapered roller bearing, against 17 mm on the 32006X and 18 mm on the 32007X.
• Cone width (B): 16 mm on the 30206 tapered roller bearing, against 17 mm on the 32006X and 18 mm on the 32007X.
• Cup width (C): 14 mm on the 30206 tapered roller bearing, against 13 mm on the 32006X and 14 mm on the 32007X.
• Cone back face chamfer dimension (r1): at least 1 mm on the 30206 tapered roller bearing, the same on the 32006X and the 32007X.
• Cup back face chamfer dimension (r3): at least 1 mm on the 30206 tapered roller bearing, the same on the 32006X and the 32007X.
• Cone back face rib diameter (d1): 45.3 mm (reference) on the 30206 tapered roller bearing, against 43.6 mm (reference) on the 32006X and 49.6 mm (reference) on the 32007X.

Other sizes

• One size smaller: 32006X Tapered Roller Bearing (Taper Roller Bearing), ISO 355, 30 mm bore, 55 mm OD, 17 mm wide.
• One size larger: 32007X Tapered Roller Bearing (Taper Roller Bearing), ISO 355, 35 mm bore, 62 mm OD, 18 mm wide.

Documents

• CC-ISO355-DS-30206.pdf: 30206 datasheet: values with levels, sources
• CC-ISO355-SZ-30206.pdf: 30206 drawing: this size's values on the views
• parts.json: the part record of this size (the platform contract)

Sources

nsk-tapered, ntn-bearingfinder-tapered, rule-iso355-cup-angle, skf-17000-tapered, timken-tapered. Full citations: the method page and this size's datasheet.

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