30210 Tapered Roller Bearing (Taper Roller Bearing), ISO 355

For a 50 mm shaft and a 90 mm housing bore, the 30210 tapered roller bearing (ISO 355) is 21.75 mm wide. Modeled as simplified STEP files.

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

• Also searched as: 30210 bearing
• Model id: iso355-30210
• Standard: ISO 355 · size 30210

Files

Part key	Simplified
iso355-30210	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
d	Bore diameter		50		50	nominal	L1
D	Outside diameter		90		90	nominal	L1
T	Total width		21.75		21.75	nominal	L1
B	Cone width		20		20	nominal	L1
C	Cup width		17		17	nominal	L1
r1	Cone back face chamfer dimension	1.5			1.5	single limit (min), modeled at the limit	L1
r3	Cup back face chamfer dimension	1.5			1.5	single limit (min), modeled at the limit	L1
d1	Cone back face rib diameter		68 ref		68	reference value	L0 (ref: one source)
Y	Axial load factor		1.43		1.43	nominal	L1
alpha	Cup half angle		15.63		15.63	nominal	L0 (nom: one source)

Drawing

As a PDF: CC-ISO355-SZ-30210.pdf.

The 30210 tapered roller bearing beside the 32010X

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

• Bore diameter (d): 50 mm on the 30210 tapered roller bearing, the same on the 32010X.
• Outside diameter (D): 90 mm on the 30210 tapered roller bearing, against 80 mm on the 32010X.
• Total width (T): 21.75 mm on the 30210 tapered roller bearing, against 20 mm on the 32010X.
• Cone width (B): 20 mm on the 30210 tapered roller bearing, the same on the 32010X.
• Cup width (C): 17 mm on the 30210 tapered roller bearing, against 15.5 mm on the 32010X.
• Cone back face chamfer dimension (r1): at least 1.5 mm on the 30210 tapered roller bearing, against at least 1 mm on the 32010X.
• Cup back face chamfer dimension (r3): at least 1.5 mm on the 30210 tapered roller bearing, against at least 1 mm on the 32010X.
• Cone back face rib diameter (d1): 68 mm (reference) on the 30210 tapered roller bearing, against 65.9 mm (reference) on the 32010X.

Other sizes

• One size smaller: 32010X Tapered Roller Bearing (Taper Roller Bearing), ISO 355, 50 mm bore, 80 mm OD, 20 mm wide.

Documents

• CC-ISO355-DS-30210.pdf: 30210 datasheet: values with levels, sources
• CC-ISO355-SZ-30210.pdf: 30210 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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