Eccentric Collars | McMaster-Carr

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Shaft Diameter

Shaft Mount Type

Mounted Bearing Type

Four-Bolt Flange Mount

Two-Bolt Flange Mount

For Mounted Bearing Model Number

Housing Material

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Center Height

Number of Set Screws Included

Maximum Temperature

210° F

220° F

400° F

Set Screw Thread Size

Lubricant

Grease with Lithium Thickener

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Material

Cast Iron

Steel

For Mounted Bearing Manufacturer

REACH

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Grease Fitting Included

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112 Products

Insert Bearings

Install by hand into a housing (sold

separately)

Image of Product. Front orientation. Ball Bearings. Insert Bearings.

Swap out worn inserts instead of replacing the entire mounted unit. To choose an insert, match the manufacturer model number on your existing bearing.

Set-Screw Shaft Mount—Tighten the screws against the shaft to hold the bearing in place, regardless of the direction the shaft spins.

Eccentric-Lock Shaft Mount—Twist the collar one way to tighten these bearings and the other way to loosen. They're a good choice when you need to take your setup apart frequently. However, they only turn one way, so they won't work with shafts that reverse.

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 Mounted Bearing Model No.	Bearing Material	ABEC Rating	Min.	Max.		Each
For SKF Mounted Bearings







				Set-Screw Shaft Mount

				1/2"	F2B 008-RM, FYT 1/2 RM	Steel	—	-20	210	0000000	000000


				3/4"	F2B 012-RM, F4B 012-RM, FYT 3/4 RM	Steel	—	-20	210	0000000	00000
				1"	F2B 100-RM, F4B 100-RM, FYT 1. RM	Steel	—	-20	210	0000000	00000
				1 1/8"	F2B 102 TF, F4B 102-TF, FY 1.1/8 TF, FYT 1.1/8 TF	Steel	—	-20	210	0000000	00000
				1 3/16"	F2B 103-RM, F4B 103-RM, FYT 1.3/16 RM	Steel	—	-20	210	0000000	00000
				1 1/4"	F2B 104-RM, F4B 104-RM, FYT 1.1/4 RM	Steel	—	-20	210	0000000	00000
				1 1/4"	F2B 104S-RM, F4B 104S-RM	Steel	—	-20	210	0000000	00000
				1 3/8"	F4B 106-TF, FY 1.3/8 TF, FYT 1.3/8 TF	Steel	—	-20	210	0000000	00000
				1 7/16"	F2B 107-RM, F4B 107-RM, FYT 1.7/16 RM	Steel	—	-20	210	0000000	00000
				1 1/2"	F2B 108-TF, F4B 108-TF, FYT 1.1/2 RM	Steel	—	-20	210	0000000	000000
				1 3/4"	F2B 112-RM, F4B 112-RM, FYT 1.3/4 RM	Steel	—	-20	210	0000000	000000


				1 15/16"	F2B 115-TF, F4B 115-TF, FYT 1.15/16 RM	Steel	—	-20	210	0000000	000000
				2"	F2B 200-RM, F4B 200-RM, FYT 2. RM	Steel	—	-20	210	0000000	000000
				2 1/4"	F4B 204-TF, FY 2.1/4 TF, FYT 2.1/4 TF	Steel	—	-20	210	0000000	000000
				2 1/2"	F4B 208-TF, FY 2.1/2 TF, FYT 2.1/2 TF	Steel	—	-20	210	0000000	000000




						Eccentric-Lock Shaft Mount

						5/8"	P2BL 010-FM, SYH 5/8 FM	Steel	—	-20	210	00000000	00000


						3/4"	P2BL 012-FM, SYH 3/4 FM	Steel	—	-20	210	00000000	00000
						7/8"	P2BL 014-FM, SYH 7/8 FM	Steel	—	-20	210	00000000	00000
						1"	P2BL 100-FM, SYH 1. FM	Steel	—	-20	210	00000000	00000
						1 1/4"	P2BL 104-FM, SYH 1.1/4 FM	Steel	—	-20	210	00000000	00000
						1 1/4"	SYH 1.1/4 AFM	Steel	—	-20	210	00000000	00000
						1 3/8"	P2BL 106-FM, SYH 1.3/8 FM	Steel	—	-20	210	00000000	00000
						1 7/16"	P2BL 107-FM, SYH 1.7/16 FM	Steel	—	-20	210	00000000	00000
						1 1/2"	P2BL 108-WF, SYH 1.1/2 WF	Steel	—	-20	210	00000000	00000
						1 15/16"	P2BL 115-WF, SYH 1.15/16 WF	Steel	—	-20	210	00000000	000000
						2"	P2BL 200-FM, SYH 2. FM	Steel	—	-20	210	00000000	000000


						2 3/16"	SYH 2.3/16 FM	Steel	—	-20	210	00000000	000000


						For Sealmaster Mounted Bearings







										Set-Screw Shaft Mount

										5/8"	FB-10, NP-10, NPL-10, SC-10, SF-10, SFT-10, ST-10, TB-10	Steel	1	-20	220	00000000	00000


3/4"	FB-12, NP-12, NPL-12, SC-12, SF-12, SFT-12, ST-12, TB-12									Steel	1	-20	220	00000000	00000
7/8"	FB-14, NP-14, NPG-14-6, NPG-14-9, NPL-14, SC-14, SF-14, SFT-14, SP-14, ST-14, STH-14-6, STH-14-9, TB-14									Steel	1	-20	220	00000000	000000
1"	FB-16, NP-16, NPG-16-6, NPG-16-9, NPL-16, SC-16, SF-16, SFT-16, SP-16, ST-16, STH-16-6, STH-16-9, TB-16									Steel	1	-20	220	00000000	000000
1"	FB-16-HT, NP-16-HT, NPG-16-6-HT, NPG-16-9-HT, NPL-16-HT, SC-16-HT, SF-16-HT, SFT-16-HT, SP-16-HT, ST-16-HT, STH-16-6-HT, STH-16-9-HT, TB-16-HT									Steel	1	-20	400	00000000	000000
1 1/8"	FB-18, NP-18, NPG-18-6, NPG-18-9, NPL-18, SC-18, SCHB-18, SEHB-18, SF-18, SFC-18, SFT-18, SP-18, ST-18, STH-18-6, STH-18-9, TB-18	Steel								1	-20	220	00000000	000000
1 3/16"	FB-19, NP-19, NPG-19-6, NPG-19-9, NPL-19, SC-19, SF-19, SFC-19, SFT-19, SP-19, ST-19, STH-19-6, STH-19-9, TB-19	Steel	1							-20	220	00000000	000000
1 1/4"	FB-20, NP-20, NPG-20-12, NPG-20-9, NPL-20, SC-20, SCHB-20, SEHB-20, SF-20, SFC-20, SFT-20, SP-20, ST-20, STH-20-12, STH-20-9, TB-20	Steel	1							-20	220	00000000	000000
1 1/4"	FB-20-HT, NP-20-HT, NPG-20-12-HT, NPG-20-9-HT, NPL-20-HT, SC-20-HT, SCHB-20-HT, SEHB-20-HT, SF-20-HT, SFC-20-HT, SFT-20-HT, SP-20-HT, ST-20-HT, STH-20-12-HT, STH-20-9-HT, TB-20-HT	Steel	1							-20	400	00000000	000000
1 1/4"	FB-20R, NP-20R, NPL-20R, SC-20R, SF-20R, SFC-20R, SFT-20R, SP-20R, ST-20R, TB-20R	Steel	1							-20	220	00000000	000000
1 3/8"	FB-22, NP-22, NPG-22-12, NPG-22-9, NPL-22, SC-22, SCHB-22, SEHB-22, SF-22, SFC-22, SFT-22, SP-22, ST-22, STH-22-12, STH-22-9, TB-22	Steel	1							-20	220	00000000	000000


1 7/16"	FB-23, NP-23, NPG-23-12, NPG-23-9, NPL-23, SC-23, SF-23, SFC-23, SFT-24, SP-23, ST-23, STH-23-12, STH-23-9, TB-23	Steel	1							-20	220	00000000	000000
1 1/2"	NP-24, NPG-24-12, NPG-24-18, NPL-24, SC-24, SCHB-24, SEHB-24, SF-24, SFC-24, SFT-24, SP-24, ST-24, STH-24-12, STH-24-18, TB-24	Steel	1							-20	220	00000000	000000
1 11/16"	NP-27, NPG-27-12, NPG-27-18, NPL-27, SC-27, SF-27, SFC-27, SFT-27, SP-27, ST-27, STH-27-12, STH-27-18, TB-27	Steel	1							-20	220	00000000	000000
1 3/4"	NP-28, NPL-28, SC-28, SFC-28, SFT-28, SP-28, ST-28, TB-28	Steel	1							-20	220	00000000	000000
1 15/16"	FB-31, NP-31, NPG-31-12, NPG-31-18, NPL-32, SC-31, SCHB-31, SEHB-31, SF-31, SFC-31, SFT-31, SP-31, ST-31, STH-31-12, STH-31-18, TB-31	Steel	1							-20	220	00000000	000000
2"	NP-32, NPG-32-12, NPG-32-18, NPL-32, SC-32, SF-32, SFC-32, SFT-32, SP-32, ST-32, STH-32-12, STH-32-18	Steel	1							-20	220	00000000	000000
2 3/16"	NP-35, NPG-35-12, NPG-35-18, NPL-35, SC-35, SF-35, SFC-35, SFT-35, SP-35, ST-35, STH-35-12, STH-35-18	Steel	1							-20	220	00000000	000000
2 7/16"	NP-39, NPG-39-12, NPG-39-18, NPL-39, SC-39, SCHB-39, SEHB-39, SF-39, SFC-39, SP-39, ST-39, STH-39-12, STH-39-18	Steel	1							-20	220	00000000	000000
20 mm	FB-204, NP-204, NPL-204, SC-204, SF-204, SFT-204, ST-204, TB-204	Steel	1							-20	220	00000000	000000
25 mm	FB-205, NP-205, NPG-205-6, NPG-205-9, NPL-205, SC-205, SF-205, SFT-205, SP-205, ST-205, STH-205-6, STH-205-9, TB-205	Steel	1							-20	220	00000000	000000


30 mm	FB-206, NP-206, NPG-206-6, NPG-206-9, NPL-206, SC-206, SCHB-206, SEHB-206, SF-206, SFC-206, SFT-206, SP-206, ST-206, STH-206-6, STH-206-9, TB-206	Steel	1							-20	220	00000000	000000
35 mm	FB-207, NP-207, NPG-207-12, NPG-207-9, NPL-207, SC-207, SCHB-207, SEHB-207, SF-207, SFC-207, SFT-207, SP-207, ST-207, STH-207-12, STH-207-9, TB-207	Steel	1							-20	220	00000000	000000
40 mm	NP-208, NPG-28-18, NPG-208-12, NPL-208, SC-208, SCHB-208, SEHB-208, SF-208, SFC-208, SFT-208, SP-208, ST-208, STH-208-12, STH-208-18, TB-208	Steel	1							-20	220	00000000	000000
50 mm	FB-210, NP-210, NPG-210-12, NPG-210-18, NPL-210, SC-210, SCHB-210, SEHB-210, SF-210, SFC-210, SFT-210, SP-210, ST-210, STH-210-12, STH-210-18, TB-210	Steel	1							-20	220	00000000	000000

Mounted Ball Bearings with Four-Bolt Flange

Smoother than smooth—the balls inside these bearings roll nearly friction-free. The four-bolt flange supports shafts with a stronger connection to the mounting surface than two-bolt alternatives.

Lubricate regularly to keep your bearing in tip-top shape. Bearings with seals keep lubricants in and contaminants out, and come packed with grease. Open bearings require initial lubrication and offer less protection against dust and debris.

Powder-Coated Cast Iron Housing—A rugged iron base coated in thick powder that protects against water, mild detergents, and oil. However, if the coating is scratched or chipped, the underlying iron may rust.

Set Screw—Turn the screw to lock your shaft in place. A simple, reliable choice, set screws grip tightly, but they can mar shaft surfaces.

Eccentric Lock—An off-center opening wedges against the shaft to grip it as it turns. Eccentric locks won't mar the shaft like a set screw, but the shaft will only rotate in one direction, so they aren't suitable for applications where the load will be reversed.

SKF—Manufactured in Europe with a strong focus on precision. The more precise the bearing, the more efficiently it will run.

Misalignment Capability—Bearings compensate for as much shaft misalignment as the degree listed. This extends the life of the bearing and protects against wear if shafts are slightly askew.

		Overall
	For Shaft Dia.	Lg.	Wd.	Flange Thk.	Dynamic Radial Load Cap., lb.	Max. Rotation Speed, rpm	Bearing Material	Bearing Seal Type	Misalignment Capability	Manufacturer		Each
Powder-Coated Cast Iron Housing







				Set Screw

				15/16"	3 3/4"	1 5/8"	7/16"	3,100	7,000	Steel	Sealed	2°	SKF	00000000	000000


				1 11/16"	5 3/8"	2 7/32"	3/4"	7,450	4,300	Steel	Sealed	2°	SKF	00000000	000000
				2 3/16"	6 3/8"	2 19/32"	23/32"	9,800	3,600	Steel	Sealed	2°	SKF	00000000	000000
				2 7/16"	6 7/8"	2 29/32"	23/32"	11,800	3,400	Steel	Sealed	2°	SKF	00000000	000000




						Eccentric Lock

						5/8"	3"	1 17/32"	7/16"	2,100	9,500	Steel	Sealed	2°	SKF	0000000	00000


						3/4"	3 3/8"	1 11/16"	3/8"	2,850	8,500	Steel	Sealed	2°	SKF	0000000	00000
						7/8"	3 3/4"	1 3/4"	7/16"	3,100	7,000	Steel	Sealed	2°	SKF	0000000	00000
						1"	3 3/4"	1 3/4"	7/16"	3,100	7,000	Steel	Sealed	2°	SKF	0000000	00000
						1 1/8"	4 1/4"	1 7/8"	21/32"	4,350	6,300	Steel	Sealed	2°	SKF	0000000	00000
						1 3/16"	4 1/4"	1 7/8"	21/32"	4,350	6,300	Steel	Sealed	2°	SKF	0000000	00000
						1 1/4"	4 5/8"	2 1/16"	1/2"	5,700	5,300	Steel	Sealed	2°	SKF	0000000	00000
						1 3/8"	4 5/8"	2 1/16"	1/2"	5,700	5,300	Steel	Sealed	2°	SKF	0000000	00000
						1 7/16"	4 5/8"	2 1/16"	1/2"	5,700	5,300	Steel	Sealed	2°	SKF	0000000	00000
						1 1/2"	5 1/8"	2 5/16"	11/16"	6,900	4,800	Steel	Sealed	2°	SKF	0000000	000000
						1 3/4"	5 3/8"	2 5/16"	3/4"	7,450	4,300	Steel	Sealed	2°	SKF	0000000	000000


						1 15/16"	5 5/8"	2 7/16"	21/32"	7,850	4,000	Steel	Sealed	2°	SKF	0000000	000000
						2"	6 3/8"	2 11/16"	23/32"	9,800	3,600	Steel	Sealed	2°	SKF	0000000	000000
						20 mm	86 mm	43 mm	11 mm	2,850	8,500	Steel	Sealed	1.5°	SKF	0000000	000000
						25 mm	95 mm	42.5 mm	12 mm	3,100	7,000	Steel	Sealed	1.5°	SKF	0000000	00000
						30 mm	108 mm	46.7 mm	13 mm	4,350	6,300	Steel	Sealed	1.5°	SKF	0000000	000000
						35 mm	118 mm	50.4 mm	13 mm	5,700	5,300	Steel	Sealed	1.5°	SKF	0000000	000000
						40 mm	130 mm	57.2 mm	14 mm	6,900	4,800	Steel	Sealed	1.5°	SKF	0000000	000000
						45 mm	137 mm	58.9 mm	14 mm	7,450	4,300	Steel	Sealed	1.5°	SKF	0000000	000000
						50 mm	143 mm	60.7 mm	15 mm	7,850	4,000	Steel	Sealed	1.5°	SKF	0000000	000000

Mounted Ball Bearings

Smoother than smooth—the balls inside these bearings roll nearly friction-free. The sturdy housing bolts down to support shafts as they turn.

Lubricate regularly to keep your bearing in tip-top shape. Bearings with seals and shields keep lubricants in and contaminants out, and come packed with grease. Open bearings require initial lubrication and offer less protection against dust and debris.

SKF—Manufactured in Europe with a strong focus on precision. The more precise the bearing, the more efficiently it will run.

Misalignment Capability—Bearings compensate for as much shaft misalignment as the degree listed. This extends the life of the bearing and protects against wear if shafts are slightly askew.

	Mounted Bearings												Replacement Bearings
			Overall
	For Shaft Dia.	Ctr. Ht.	Lg.	Wd.	Dynamic Radial Load Cap., lb.	Max. Rotation Speed, rpm	Bearing Material	Bearing Seal Type	Misalignment Capability	Manufacturer		Each		Each
Powder-Coated Cast Iron Housing







				Eccentric Lock

				5/8"	1 1/16"	5 15/32"	1 1/2"	2,150	9,500	Steel	Sealed	2°	SKF	0000000	000000	00000000	000000


				3/4"	1 1/4"	5"	1 19/32"	2,850	8,500	Steel	Sealed	2°	SKF	0000000	00000	00000000	00000
				7/8"	1 5/16"	5 1/2"	1 43/64"	3,150	7,000	Steel	Sealed	2°	SKF	0000000	00000	00000000	00000
				1"	1 5/16"	5 1/2"	1 43/64"	3,150	7,000	Steel	Sealed	2°	SKF	0000000	00000	00000000	00000
				1 1/8"	1 9/16"	6 1/2"	1 59/64"	4,350	6,300	Steel	Sealed	2°	SKF	0000000	000000	———	0
				1 3/16"	1 9/16"	6 1/2"	2 1/16"	4,350	6,300	Steel	Sealed	2°	SKF	0000000	000000	———	0
				1 1/4"	1 13/16"	6 9/16"	2 1/16"	5,700	5,300	Steel	Sealed	2°	SKF	0000000	000000	00000000	00000
				1 3/8"	1 13/16"	6 9/16"	2 1/16"	5,700	5,300	Steel	Sealed	2°	SKF	0000000	000000	00000000	00000
				1 7/16"	1 13/16"	6 9/16"	2 1/16"	5,700	5,300	Steel	Sealed	2°	SKF	0000000	00000	00000000	00000
				1 1/2"	1 15/16"	7 1/4"	2 1/4"	6,900	4,800	Steel	Sealed	2°	SKF	0000000	000000	00000000	00000
				1 3/4"	2 1/16"	7 15/32"	2 19/64"	7,450	4,300	Steel	Sealed	2°	SKF	0000000	000000	———	0


				1 15/16"	2 3/16"	8 1/8"	2 3/8"	7,850	4,000	Steel	Sealed	2°	SKF	0000000	000000	00000000	000000
				2"	2 7/16"	8 5/8"	2 37/64"	9,800	3,600	Steel	Sealed	2°	SKF	0000000	000000	00000000	000000
				20 mm	33.3 mm	127 mm	39.5 mm	2,850	8,500	Steel	Sealed	2°	SKF	00000000	000000	———	0
				20 mm	33.3 mm	127 mm	42.6 mm	2,850	8,500	Steel	Sealed	2°	SKF	00000000	000000	———	0
				25 mm	36.5 mm	130 mm	41.5 mm	3,100	7,000	Steel	Sealed	2°	SKF	00000000	000000	———	0
				25 mm	36.5 mm	130 mm	44.9 mm	3,100	7,000	Steel	Sealed	2°	SKF	00000000	000000	———	0
				30 mm	42.9 mm	152 mm	46.7 mm	4,350	6,300	Steel	Sealed	2°	SKF	00000000	000000	———	0
				30 mm	42.9 mm	152 mm	50.1 mm	4,350	6,300	Steel	Sealed	2°	SKF	00000000	000000	———	0
				40 mm	49.2 mm	175 mm	58.9 mm	6,900	4,800	Steel	Sealed	2°	SKF	00000000	000000	———	0
				45 mm	54 mm	187 mm	56.7 mm	7,450	4,300	Steel	Sealed	2°	SKF	00000000	000000	———	0


				50 mm	57.2 mm	203 mm	65.1 mm	7,850	4,000	Steel	Sealed	2°	SKF	00000000	000000	———	0

Light Duty Mounted Ball Bearings

With a two-piece housing made from thin pressed metal, these bearings are a cost-effective option when extreme precision isn't necessary. Less stable than bearings with forged, one-piece housings, they're good for hand-cranked systems, gravity feed conveyor rollers, and other low-speed applications. Inside, the balls roll nearly friction-free to support smooth rotation.

Lubricate regularly to keep your bearing in tip-top shape. These bearings come packed with grease and sealed to block out dust and contaminants.

Steel Housing—Best for dry environments as moisture will cause them to rust.

Misalignment Capability—Bearings compensate for as much shaft misalignment as the degree listed. This extends the life of the bearing and protects against wear if shafts are slightly askew.

			Overall
	For Shaft Dia.	Ctr. Ht.	Lg.	Wd.	Dynamic Radial Load Cap., lb.	Max. Rotation Speed, rpm	Bearing Material	Bearing Seal Type	Misalignment Capability		Each
Steel Housing







				Eccentric Lock

				1/2"	7/8"	3 3/8"	31/32"	2,100	5,500	Steel	Sealed	3°	00000000	000000


				5/8"	7/8"	3 3/8"	31/32"	2,100	5,500	Steel	Sealed	3°	00000000	00000
				3/4"	1"	3 27/32"	1 1/4"	2,850	5,500	Steel	Sealed	3°	00000000	00000
				7/8"	1 1/8"	4 1/4"	1 1/4"	3,100	5,000	Steel	Sealed	3°	00000000	00000
				15/16"	1 1/8"	4 1/4"	1 1/4"	3,100	5,000	Steel	Sealed	3°	00000000	00000
				1"	1 1/8"	4 1/4"	1 1/4"	3,100	5,000	Steel	Sealed	3°	00000000	00000
				1 1/8"	1 15/16"	4 19/32"	1 1/2"	4,300	4,000	Steel	Sealed	3°	00000000	00000
				1 3/16"	1 15/16"	4 19/32"	1 1/2"	4,300	4,000	Steel	Sealed	3°	00000000	00000
				1 1/4"	1 15/16"	4 19/32"	1 1/2"	4,300	4,000	Steel	Sealed	3°	00000000	00000

Mounted Ball Bearings with Two-Bolt Flange

Smoother than smooth—the balls inside these bearings roll nearly friction-free. The sturdy housing supports the shaft and secures with a two-bolt flange, the most common type of flanged bearing.

SKF—Manufactured in Europe with a strong focus on precision. The more precise the bearing, the more efficiently it will run.

Misalignment Capability—Bearings compensate for as much shaft misalignment as the degree listed. This extends the life of the bearing and protects against wear if shafts are slightly askew.

		Overall, mm
	For Shaft Dia., mm	Lg.	Wd.	Flange Thk., mm	Dynamic Radial Load Cap., lb.	Max. Rotation Speed, rpm	Bearing Material	Bearing Seal Type	Misalignment Capability	Manufacturer		Each
Powder-Coated Cast Iron Housing







				Eccentric Lock

				17	98.5	39.1	11	2,100	9,500	Steel	Sealed	2°	SKF	00000000	0000000


				20	112	42.5	11	2,850	8,500	Steel	Sealed	2°	SKF	00000000	000000
				25	124	42.5	12	3,100	7,000	Steel	Sealed	2°	SKF	00000000	000000
				30	141.5	46.7	13	4,350	6,300	Steel	Sealed	2°	SKF	00000000	000000
				30	141.5	50.1	13	4,350	6,300	Steel	Sealed	2°	SKF	00000000	000000