32008X Tapered Roller Bearing (Taper Roller Bearing), ISO 355

The 32008X tapered roller bearing (ISO 355) has a 40 mm bore, a 68 mm outside diameter and a width of 19 mm. Get it as simplified STEP files.

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

• Also searched as: 32008X bearing
• Model id: iso355-32008x
• Standard: ISO 355 · size 32008X

Files

Part key	Simplified
iso355-32008x	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
d	Bore diameter		40		40	nominal	L1
D	Outside diameter		68		68	nominal	L1
T	Total width		19		19	nominal	L1
B	Cone width		19		19	nominal	L1
C	Cup width		14.5		14.5	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		54.7 ref		54.7	reference value	L0 (ref: one source)
Y	Axial load factor		1.58		1.58	nominal	L1
alpha	Cup half angle		14.21		14.21	nominal	L0 (nom: one source)

Drawing

As a PDF: CC-ISO355-SZ-32008X.pdf.

The 32008X tapered roller bearing beside the 30207 and the 30208

The 32008X is number 11 of the 16 ISO 355 tapered roller bearings published here, listed from 30202 to 30210.

• Bore diameter (d): 40 mm on the 32008X tapered roller bearing, against 35 mm on the 30207 and 40 mm on the 30208.
• Outside diameter (D): 68 mm on the 32008X tapered roller bearing, against 72 mm on the 30207 and 80 mm on the 30208.
• Total width (T): 19 mm on the 32008X tapered roller bearing, against 18.25 mm on the 30207 and 19.75 mm on the 30208.
• Cone width (B): 19 mm on the 32008X tapered roller bearing, against 17 mm on the 30207 and 18 mm on the 30208.
• Cup width (C): 14.5 mm on the 32008X tapered roller bearing, against 15 mm on the 30207 and 16 mm on the 30208.
• Cone back face chamfer dimension (r1): at least 1 mm on the 32008X tapered roller bearing, against at least 1.5 mm on the 30207 and at least 1.5 mm on the 30208.
• Cup back face chamfer dimension (r3): at least 1 mm on the 32008X tapered roller bearing, against at least 1.5 mm on the 30207 and at least 1.5 mm on the 30208.
• Cone back face rib diameter (d1): 54.7 mm (reference) on the 32008X tapered roller bearing, against 51.9 mm (reference) on the 30207 and 57.5 mm (reference) on the 30208.

Other sizes

• One size smaller: 30207 Tapered Roller Bearing (Taper Roller Bearing), ISO 355, 35 mm bore, 72 mm OD, 18.25 mm wide.
• One size larger: 30208 Tapered Roller Bearing (Taper Roller Bearing), ISO 355, 40 mm bore, 80 mm OD, 19.75 mm wide.

Documents

• CC-ISO355-DS-32008X.pdf: 32008X datasheet: values with levels, sources
• CC-ISO355-SZ-32008X.pdf: 32008X 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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