689, 689-2Z, 689-2RS Ball Bearing, ISO 15

The 689 ball bearing (ISO 15) has a 9 mm bore, a 17 mm outside diameter and a width of 4 mm. Get it as simplified STEP files.

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

• Also searched as: 689 bearing, 689-2Z bearing, 689-2RS bearing
• Model id: iso15-689
• Standard: ISO 15 · size 689

Versions

Designation	What differs	Part key	Simplified
689	open	iso15-689	STEP
689-2Z	2Z (shielded)	iso15-689-2z	STEP
689-2RS	2RS (sealed)	iso15-689-2rs	STEP

Dimensions

Symbol	Name	min	nom	max	Modeled	Rule	Level
d	Bore diameter		9		9	nominal	L1
D	Outside diameter		17		17	nominal	L1
B	Width		4		4	nominal	L1
r	Chamfer dimension	0.2			0.2	single limit (min), modeled at the limit	L1
B1	Width, shielded or sealed		5		5	nominal	L1

Drawing

As a PDF: CC-ISO15-SZ-689.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: 1460 N
• Basic Load Ratings, C0r: 665 N
• Limiting Speeds, Grease: 36000 min-1
• Limiting Speeds, Oil (Oil-bath): 43000 min-1

The 689 ball bearing beside the 628 and the 699

The 689 is number 21 of the 71 ISO 15 ball bearings published here, listed from 693 to 6306.

• Bore diameter (d): 9 mm on the 689 ball bearing, against 8 mm on the 628 and 9 mm on the 699.
• Outside diameter (D): 17 mm on the 689 ball bearing, against 24 mm on the 628 and 20 mm on the 699.
• Width (B): 4 mm on the 689 ball bearing, against 8 mm on the 628 and 6 mm on the 699.
• Chamfer dimension (r): at least 0.2 mm on the 689 ball bearing, against at least 0.3 mm on the 628 and at least 0.3 mm on the 699.

Other sizes

• One size smaller: 628 Ball Bearing, ISO 15, 8 mm bore, 24 mm OD, 8 mm wide.
• One size larger: 699 Ball Bearing, ISO 15, 9 mm bore, 20 mm OD, 6 mm wide.

Documents

• CC-ISO15-DS-689.pdf: 689 datasheet: values with levels, sources
• CC-ISO15-SZ-689.pdf: 689 drawing: this size's values on the views
• parts.json: the part record of this size (the platform contract)

Sources

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

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