3/16" Housing ID Bearings

Smoother than smooth—the balls inside these bearings roll nearly friction-free. You’ll often find them on rapidly rotating parts, from the whirring chuck on a power drill to the spinning shaft on an electric motor.

Open—With no rubber seal to block airflow, these bearings dissipate heat quickly, extending the life of the lubricant and reducing friction over time.

Shielded—The balls are covered just enough to keep out large particles while allowing air to pass through and dissipate heat.

Corrosion-Resistant 440C Stainless Steel—Combine the strength of steel with the corrosion resistance of stainless steel. These bearings won't degrade from water or mild chemicals, such as the ammonia in cleaning solutions. However, they'll weaken when exposed to salt water and harsh chemicals, such as bleach.

Extended Inner Ring—Connect to mating parts without the need for a spacer. The inner ring juts out farther than the outer ring, so shaft collars and other objects won't touch the bearing's moving parts.

ABEC Rating—Bearings with an ABEC rating meet industry tolerance standards established by the Annular Bearing Engineers Committee (ABEC). They're rated on a scale from 1 to 9. The higher the rating, the tighter the tolerance. Bearings rated ABEC 1 or 3 are precise enough for most applications. If your application consistently runs at high speeds or requires high accuracy, consider bearings rated ABEC 5 or higher, since they generate less friction and heat.

							Temp. Range, ° F
	For Shaft Dia.	For Housing ID	Wd.	ABEC Rating	Dynamic Radial Load Cap., lb.	Max. Rotation Speed, rpm	Min.	Max.	Inner Ring Type	Bearing Trade No.		Each
Open







				Corrosion-Resistant 440C Stainless Steel

				0.055"	3/16"	5/64"	5	50	110,000	-40	240	Standard	R1	57155K342	00000


				3/32"	3/16"	1/16"	5	40	95,000	-40	240	Standard	R133	57155K344	0000


				Shielded







								Corrosion-Resistant 440C Stainless Steel

								0.055"	3/16"	7/64"	5	50	110,000	-40	240	Standard	R1-2Z	57155K361	0000


								0.055"	3/16"	7/64"	5	50	110,000	-40	240	Extended	R1-2Z	57155K12	00000
								3/32"	3/16"	3/32"	5	30	95,000	-40	240	Standard	R133-2Z	57155K363	0000
								3/32"	3/16"	3/32"	5	30	95,000	-40	240	Extended	R133-2Z	57155K13	00000

Oil-Embedded Sleeve Bearings

Install and forget these self-lubricating bearings. All are made from porous metal and saturated with oil to reduce maintenance and downtime. A good all-around choice, they are used in everything from palm-sized fans in electronics to tire-sized pulleys. Although these bearings will work in most conditions, oil may drip away if temperatures get too high. Consider a graphite-lubricated bearing for higher temperatures or places where you can’t afford the mess. All are fabricated, lubricated, and inspected in the U.S.

With no moving parts, sleeve bearings are the simplest way to support the load of a rotating shaft while reducing friction. Also known as plain bearings.

841 Bearing Bronze—A classic choice for a starter pick. Also known as SAE 841 bearings.

Mineral Oil Base—Mineral oil consistently lubricates at most temperatures but doesn’t last as long as synthetic oil.

Synthetic Oil Base—A high-quality lubricant makes all the difference. Synthetic oil is less sensitive to temperature changes than mineral oil, so it won't get runny and leak away at higher temperatures.

	For Housing ID	Lg.	Dynamic Radial Load Cap. @ Speed	Base Oil	Temp. Range, ° F		Each
841 Bearing Bronze



	1/8"	3/16"	1/8"	31 lb. @ 120 rpm	Synthetic Oil	-35 to 300	6391K611	00000


	1/8"	3/16"	5/32"	39 lb. @ 120 rpm	Mineral Oil	10 to 220	6391K326	0000
	1/8"	3/16"	1/4"	60 lb. @ 120 rpm	Synthetic Oil	-35 to 300	6391K753	0000
	1/8"	3/16"	5/16"	75 lb. @ 120 rpm	Synthetic Oil	-35 to 300	6391K755	0000
	1/8"	3/16"	1/2"	125 lb. @ 120 rpm	Synthetic Oil	-35 to 300	6391K754	0000

Dry-Running Sleeve Bearings

Made of naturally slippery plastic so you’ll never have to add lubricant. They’re ideal for clean environments where you need to prevent oil drips or graphite flakes. Compared to metal bearings, they are lighter and will never rust.

With no moving parts, sleeve bearings are the simplest way to support the load of a rotating shaft while reducing friction. Also known as plain bearings.

High-Load Ultra-Low-Friction Plastic Blend—Create the least amount of friction of any bearings that we offer. They handle heavier loads than Rulon J bearings but can't withstand the same extreme temperatures.

								Each
	For Shaft Dia.	For Housing ID	Lg.	Dynamic Radial Load Cap. @ Speed	Color	Temp. Range, ° F		1-24	25-99	100-Up
High-Load Ultra-Low-Friction Plastic Blend



		1/8"	3/16"	3/16"	80 lb. @ 120 rpm	Yellow	-55 to 190	6377K131	00000	00000	00000

Flanged Ball Bearings

Open

Shielded

Install these bearings inside a housing and they won't budge. The flange presses against the housing wall, so vibration and other sudden forces parallel to the shaft (thrust loads) won't knock them off-kilter.

Open—With no rubber seal to block airflow, these bearings dissipate heat quickly, extending the life of the lubricant and reducing friction over time.

Shielded—The balls are covered just enough to keep out large particles while allowing air to pass through and dissipate heat.

				Flange					Temp. Range, ° F
	For Shaft Dia.	For Housing ID	Wd.	OD	Thk.	ABEC Rating	Dynamic Radial Load Cap., lb.	Max. Rotation Speed, rpm	Min.	Max.	Inner Ring Type	Bearing Trade No.		Each
Open







				Corrosion-Resistant 440C Stainless Steel

				3/32"	3/16"	1/16"	0.234"	0.02"	5	40	95,000	-65	250	Standard	R133	57155K203	00000


				Shielded







								Corrosion-Resistant 440C Stainless Steel

								3/32"	3/16"	3/32"	0.234"	0.03"	5	30	95,000	-65	250	Standard	R133-2Z	57155K311	0000


								3/32"	3/16"	3/32"	0.234"	0.03"	5	30	95,000	-65	250	Extended	R133-2Z	57155K327	00000

High-Precision Ball Bearings

Open

Shielded

The most precise bearings we offer, with tolerances tighter than a speck of dust. Rated ABEC 7 out of 9, they meet strict tolerance standards established by the Annular Bearing Engineers Committee (ABEC). You'll find them in equipment that requires both high speed and pinpoint accuracy, such as gyroscopes.

Open—With no rubber seal to block airflow, these bearings dissipate heat quickly, extending the life of the lubricant and reducing friction over time.

Shielded—The balls are covered just enough to keep out large particles while allowing air to pass through and dissipate heat.

							Temp. Range, ° F
	For Shaft Dia.	For Housing ID	Wd.	ABEC Rating	Dynamic Radial Load Cap., lb.	Max. Rotation Speed, rpm	Min.	Max.	Inner Ring Type	Bearing Trade No.		Each
Open







				Corrosion-Resistant 440C Stainless Steel

				0.055"	3/16"	5/64"	7	30	100,000	-10	240	Standard	R1	3826T3	000000


				3/32"	3/16"	1/16"	7	20	100,000	-10	240	Standard	R133	3826T5	00000


				Shielded







								Corrosion-Resistant 440C Stainless Steel

								0.055"	3/16"	7/64"	7	25	68,000	-10	240	Standard	R1-2Z	3759T42	00000


								3/32"	3/16"	3/32"	7	15	34,000	-10	240	Standard	R133-2Z	3759T44	00000

Pivot Bearings


Single-Ended Pivot Bearing	Double-Ended Pivot Bearing

Deflection

Angle

Also known as flexure bearings, these bearings are best for applications that require small, precise oscillating motion with limited twisting such as gimbals, vibration hoppers, and optical devices. They have rotating sleeves connected by springs to create smooth motion without the need for lubricants. When used within their rated capacities, they don't require any maintenance. Clamp on, press fit, or use a set screw or pin to install.

				Radial Load Cap., lb.			Spring
	For Housing ID	Overall Lg.	Deflection Angle	in Compression	in Tension	Sleeve Material	Type	Rate	Lubrication	Temp. Range, ° F	Mounting Fasteners Included		Each
Single-Ended Pivot Bearing



		3/16"	9/32"	-15° to 15°	2	7.5	Stainless Steel	Leaf	0.0007 in·lbf/1°	Not Required	-100 to 375	No	4468N13	0000000


		Double-Ended Pivot Bearing



				3/16"	9/32"	-15° to 15°	5	10	Stainless Steel	Leaf	0.0007 in·lbf/1°	Not Required	-100 to 375	No	4468N24	000000

High-Precision Flanged Ball Bearings

Open

Shielded

Our most precise flanged ball bearings, with tolerances tighter than a speck of dust. Rated ABEC 7 out of 9, they meet strict tolerance standards established by the Annular Bearing Engineers Committee (ABEC). Choose them for high-speed equipment that requires pinpoint accuracy, such as gyroscopes. Their flange presses against the housing wall, so vibration and other sudden forces parallel to the shaft (thrust loads) won't knock them off-kilter.

Open—With no rubber seal to block airflow, these bearings dissipate heat quickly, extending the life of the lubricant and reducing friction over time.

Shielded—The balls are covered just enough to keep out large particles while allowing air to pass through and dissipate heat.

				Flange					Temp. Range, ° F
	For Shaft Dia.	For Housing ID	Wd.	OD	Thk.	ABEC Rating	Dynamic Radial Load Cap., lb.	Max. Rotation Speed, rpm	Min.	Max.	Inner Ring Type	Bearing Trade No.		Each
Open







				Corrosion-Resistant 440C Stainless Steel

				0.055"	3/16"	5/64"	0.234"	0.02"	7	30	100,000	-10	240	Standard	R1	4259T2	000000


				3/32"	3/16"	1/16"	0.234"	0.02"	7	20	100,000	-10	240	Standard	R133	4259T4	00000


				Shielded







								Corrosion-Resistant 440C Stainless Steel

								0.055"	3/16"	7/64"	0.234"	0.03"	7	25	68,000	-60	250	Standard	R1-2Z	4262T22	00000


								3/32"	3/16"	3/32"	0.234"	0.03"	7	15	34,000	-60	250	Standard	R133-2Z	4262T24	00000

Ultra-Low-Friction Oil-Embedded Sleeve Bearings

Our slipperiest metal bearings, these are ideal for machinery with frequent starts and stops, such as conveyors. With nonstick PTFE particles added to the oil, they reduce friction to minimize wear and heat, so equipment runs more efficiently and lasts longer. All are fabricated, lubricated, and inspected in the U.S.

With no moving parts, sleeve bearings are the simplest way to support the load of a rotating shaft while reducing friction. Also known as plain bearings.

841 Bearing Bronze—A classic choice for a starter pick. Also known as SAE 841 bearings.

	For Housing ID	Lg.	Dynamic Radial Load Cap. @ Speed	Base Oil	Lubricant Additive	Temp. Range, ° F		Each
841 Bearing Bronze



	1/8"	3/16"	1/4"	60 lb. @ 120 rpm	Synthetic Oil	PTFE	-40 to 460	1688K317	00000


	1/8"	3/16"	1/2"	120 lb. @ 120 rpm	Synthetic Oil	PTFE	-40 to 460	1688K318	0000