6905, 6905-2Z, 6905-2RS Ball Bearing, ISO 15

For a 25 mm shaft and a 42 mm housing bore, the 6905 ball bearing (ISO 15) is 9 mm wide. Modeled as simplified STEP files.

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

• Also searched as: 6905 bearing, 6905-2Z bearing, 6905-2RS bearing
• Model id: iso15-6905
• Standard: ISO 15 · size 6905

Versions

Designation	What differs	Part key	Simplified
6905	open	iso15-6905	STEP
6905-2Z	2Z (shielded)	iso15-6905-2z	STEP
6905-2RS	2RS (sealed)	iso15-6905-2rs	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
d	Bore diameter		25		25	nominal	L1
D	Outside diameter		42		42	nominal	L1
B	Width		9		9	nominal	L1
r	Chamfer dimension	0.3			0.3	single limit (min), modeled at the limit	L1

Drawing

As a PDF: CC-ISO15-SZ-6905.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: 7750 N
• Basic Load Ratings, C0r: 4550 N
• Limiting Speeds, Grease: 16000 min-1
• Limiting Speeds, Oil (Oil-bath): 19000 min-1

The 6905 ball bearing beside the 6805 and the 16005

The 6905 is number 58 of the 71 ISO 15 ball bearings published here, listed from 693 to 6306.

• Bore diameter (d): 25 mm on the 6905 ball bearing, the same on the 6805 and the 16005.
• Outside diameter (D): 42 mm on the 6905 ball bearing, against 37 mm on the 6805 and 47 mm on the 16005.
• Width (B): 9 mm on the 6905 ball bearing, against 7 mm on the 6805 and 8 mm on the 16005.
• Chamfer dimension (r): at least 0.3 mm on the 6905 ball bearing, the same on the 6805 and the 16005.

Other sizes

• One size smaller: 6805 Ball Bearing, ISO 15, 25 mm bore, 37 mm OD, 7 mm wide.
• One size larger: 16005 Ball Bearing, ISO 15, 25 mm bore, 47 mm OD, 8 mm wide.

Documents

• CC-ISO15-DS-6905.pdf: 6905 datasheet: values with levels, sources
• CC-ISO15-SZ-6905.pdf: 6905 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. Full citations: the method page and this size's datasheet.

Found an error? Use the feedback section on this page.