63/28, 63/28-2Z, 63/28-2RS Ball Bearing, ISO 15

The 63/28 ball bearing (ISO 15) has a 28 mm bore, a 68 mm outside diameter and a width of 18 mm. Get it as simplified STEP files.

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

• Also searched as: 63/28 bearing, 63/28-2Z bearing, 63/28-2RS bearing
• Model id: iso15-63-28
• Standard: ISO 15 · size 63/28

Versions

Designation	What differs	Part key	Simplified
63/28	open	iso15-63-28	STEP
63/28-2Z	2Z (shielded)	iso15-63-28-2z	STEP
63/28-2RS	2RS (sealed)	iso15-63-28-2rs	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
d	Bore diameter		28		28	nominal	L1
D	Outside diameter		68		68	nominal	L1
B	Width		18		18	nominal	L1
r	Chamfer dimension	1.1			1.1	single limit (min), modeled at the limit	L1

Drawing

As a PDF: CC-ISO15-SZ-63-28.pdf.

Load ratings and speeds

What NSK's web catalogue (nsk-dgbb) lists for its open bearing of this designation. Limiting speeds are for the open bearing; a shielded or sealed bearing has its own, lower ones.

• Basic Load Ratings, Cr: 29400 N
• Basic Load Ratings, C0r: 14000 N
• Limiting Speeds, Grease: 10000 min-1
• Limiting Speeds, Oil (Oil-bath): 13000 min-1

The 63/28 ball bearing beside the 62/28 and the 6806

The 63/28 is number 65 of the 71 ISO 15 ball bearings published here, listed from 693 to 6306.

• Bore diameter (d): 28 mm on the 63/28 ball bearing, against 28 mm on the 62/28 and 30 mm on the 6806.
• Outside diameter (D): 68 mm on the 63/28 ball bearing, against 58 mm on the 62/28 and 42 mm on the 6806.
• Width (B): 18 mm on the 63/28 ball bearing, against 16 mm on the 62/28 and 7 mm on the 6806.
• Chamfer dimension (r): at least 1.1 mm on the 63/28 ball bearing, against at least 1 mm on the 62/28 and at least 0.3 mm on the 6806.

Other sizes

• One size smaller: 62/28 Ball Bearing, ISO 15, 28 mm bore, 58 mm OD, 16 mm wide.
• One size larger: 6806 Ball Bearing, ISO 15, 30 mm bore, 42 mm OD, 7 mm wide.

Documents

• CC-ISO15-DS-63-28.pdf: 63/28 datasheet: values with levels, sources
• CC-ISO15-SZ-63-28.pdf: 63/28 drawing: this size's values on the views
• parts.json: the part record of this size (the platform contract)

Sources

nsk-dgbb, ntn-bearingfinder-dgbb, skf-17000-dgbb. Full citations: the method page and this size's datasheet.

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