6306, 6306-2Z, 6306-2RS Ball Bearing, ISO 15

The 6306 ball bearing (ISO 15) has a 30 mm bore, a 72 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: 6306 bearing, 6306-2Z bearing, 6306-2RS bearing
• Model id: iso15-6306
• Standard: ISO 15 · size 6306

Versions

Designation	What differs	Part key	Simplified
6306	open	iso15-6306	STEP
6306-2Z	2Z (shielded)	iso15-6306-2z	STEP
6306-2RS	2RS (sealed)	iso15-6306-2rs	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
d	Bore diameter		30		30	nominal	L1
D	Outside diameter		72		72	nominal	L1
B	Width		19		19	nominal	L1
r	Chamfer dimension	1.1			1.1	single limit (min), modeled at the limit	L1

Drawing

As a PDF: CC-ISO15-SZ-6306.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: 29300 N
• Basic Load Ratings, C0r: 15000 N
• Limiting Speeds, Grease: 11000 min-1
• Limiting Speeds, Oil (Oil-bath): 13000 min-1

The 6306 ball bearing beside the 6206

The 6306 is the last of the 71 ISO 15 ball bearings published here, listed from 693 to 6306.

• Bore diameter (d): 30 mm on the 6306 ball bearing, the same on the 6206.
• Outside diameter (D): 72 mm on the 6306 ball bearing, against 62 mm on the 6206.
• Width (B): 19 mm on the 6306 ball bearing, against 16 mm on the 6206.
• Chamfer dimension (r): at least 1.1 mm on the 6306 ball bearing, against at least 1 mm on the 6206.

Other sizes

• One size smaller: 6206 Ball Bearing, ISO 15, 30 mm bore, 62 mm OD, 16 mm wide.

Documents

• CC-ISO15-DS-6306.pdf: 6306 datasheet: values with levels, sources
• CC-ISO15-SZ-6306.pdf: 6306 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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