7203 Ball Bearings | McMaster-Carr

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About Ball and Roller Bearings

Selecting Compatible Lead Screws and Nuts

Open

Single-row bearings handle thrust loads on one side. For applications with thrust loads on both sides, mount them in pairs.

Open bearings dissipate heat more efficiently than shielded and sealed bearings.

For technical drawings and 3-D models, click on a part number.

					Combined Load Cap., lbs.
Bearing Trade Number	For Shaft Dia., mm	For Housing ID, mm	Wd., mm	Ring Material	Dynamic	Static	Max. Speed, rpm	Lubrication	Contact Angle	Temp. Range, °F	ABEC Rating		Each
Single Row
Open
7203	17	40	12	Steel	2,300	1,200	20,000	Required	40°	-20° to 230°	ABEC-3	0000000	000000

High-Speed Angular-Contact Thrust Ball Bearings

Open

An ABEC-7 rating means these bearings are made to some of the tightest tolerances, so they operate at the highest speeds.

Open bearings dissipate heat more efficiently than sealed bearings.

For technical drawings and 3-D models, click on a part number.

					Combined Load Cap., lbs.
Bearing Trade Number	For Shaft Dia., mm	For Housing ID, mm	Wd., mm	Ring Material	Dynamic	Static	Max. Speed, rpm	Lubrication	Contact Angle	Temp. Range, °F	ABEC Rating		Each
Single Row
Open
7203	17	40	12	Steel	2,550	1,300	40,400	Required	15°	-40° to 245°	ABEC-7	0000000	0000000

End Supports for Lead Screws and Ball Screws

A set of ball bearings reduces friction and secures the end of a ball or lead screw. Note: The end of your ball or lead screw must be machined before installing it into an end support.

For technical drawings and 3-D models, click on a part number.

For Combined Radial and Thrust Loads

End supports for combined radial and thrust loads handle radial loads (perpendicular to the lead screw) and thrust loads (parallel to the lead screw).

					Combined Load Cap., lbs.			Face Mounting Holes			Top Mounting Holes
ID	Ht.	Center Ht.	Wd.	Dp.	Static	Dynamic	No. of Mounting Holes	Dia.	Ctr.-to-Ctr. Wd.	Ctr.-to-Ctr. Ht.	Dia.	Ctr.-to-Ctr. Wd.	Temperature Range, °F		Each
Alloy Steel
43/64"	2 3/8"	1 1/4"	4"	2 19/64"	3,200	1,550	6	13/32"	2 7/8"	1 3/8"	17/32"	2 7/8"	-40° to 210°	000000000	0000000

Metric End Supports for Lead Screws and Ball Screws

A set of ball bearings reduces friction and secures the end of a ball or lead screw. End supports handle radial loads (perpendicular to the lead screw) and thrust loads (parallel to the lead screw). Note: The end of your ball or lead screw must be machined before installing it into an end support.

For technical drawings and 3-D models, click on a part number.

					Combined Load Cap., lbs.		Top Mounting Holes
ID, mm	Ht., mm	Center Ht., mm	Wd., mm	Dp., mm	Static	Dynamic	Dia.	Ctr.-to-Ctr. Wd., mm	Temperature Range, °F		Each
For Combined Radial and Thrust Loads
Carbon Steel
17	64	39	86	51	1,300	3,050	9	68	0° to 160°	0000000	0000000