Linear Bearing Supports | McMaster-Carr

Made with two pieces, these shaft supports secure your shaft parallel to your mounting surface and make it easy to access the shaft without having to slide it out or uninstall the support. Use these supports when working with light to medium loads where shaft alignment is not critical. These supports are machined to have flat, square surfaces, so they can be used to align other supports and parts in your system. Tighten the included clamping screws to secure the shaft.

Tee

Image of Product. Front orientation. Contains Annotated. Linear Shaft Supports. Easy-Access Base-Mount Linear Shaft Supports, Tee.

Tee supports have mounting flanges on the side. Mount these supports to a surface from either the top or bottom using the unthreaded holes.

Anodized 6061 Aluminum—Aluminum supports are lightweight and resist corrosion.

		Overall					Mounting Hole
	For Shaft Dia.	Lg.	Wd.	Ht.	Ctr. Ht.	Ctr. Ht. Tolerance	No. of	Ctr.-to-Ctr.	Dia.	Clamping Screw Thread Size	Fabrication		Each
Black Anodized 6061 Aluminum



		1/4"	1 1/2"	1/2"	1"	11/16"	-0.002" to 0"	2	1 1/8"	0.16"	6-32	Machined	1865K107	000000


		3/8"	1 5/8"	9/16"	1 1/8"	3/4"	-0.002" to 0"	2	1 1/4"	0.16"	6-32	Machined	1865K108	00000
		1/2"	2"	5/8"	1 1/2"	1"	-0.002" to 0"	2	1 1/2"	0.19"	8-32	Machined	1865K109	00000
		5/8"	2 1/2"	11/16"	1 1/2"	1"	-0.002" to 0"	2	1 7/8"	0.22"	10-24	Machined	1865K11	00000
		3/4"	2 3/4"	3/4"	1 13/16"	1 1/4"	-0.002" to 0"	2	2"	0.22"	10-24	Machined	1865K111	00000
		1"	3 1/4"	1"	2 3/16"	1 1/2"	-0.002" to 0"	2	2 1/2"	0.28"	1/4"-20	Machined	1865K112	00000
		1 1/4"	4"	1 1/8"	2 5/8"	1 3/4"	-0.002" to 0"	2	3"	0.34"	5/16"-18	Machined	1865K113	00000
		1 1/2"	4 3/4"	1 1/4"	3"	2"	-0.002" to 0"	2	3 1/2"	0.34"	5/16"-18	Machined	1865K114	00000
		2"	6"	1 1/2"	3 3/4"	2 1/2"	-0.002" to 0"	2	4 1/2"	0.41"	3/8"-16	Machined	1865K115	00000
		8 mm	32 mm	10 mm	23 mm	15 mm	-0.05 mm to 0 mm	2	25 mm	4.5 mm	M2.5	Machined	1865K116	00000
		12 mm	40 mm	12 mm	30 mm	20 mm	-0.05 mm to 0 mm	2	32 mm	5.5 mm	M3	Machined	1865K117	00000


		16 mm	50 mm	16 mm	38 mm	25 mm	-0.05 mm to 0 mm	2	40 mm	5.5 mm	M4	Machined	1865K118	00000
		20 mm	60 mm	20 mm	45 mm	30 mm	-0.05 mm to 0 mm	2	45 mm	5.5 mm	M5	Machined	1865K119	00000
		25 mm	74 mm	25 mm	55 mm	35 mm	-0.05 mm to 0 mm	2	60 mm	6.6 mm	M6	Machined	1865K12	00000
		30 mm	84 mm	28 mm	63 mm	40 mm	-0.05 mm to 0 mm	2	68 mm	9 mm	M8	Machined	1865K121	00000
		40 mm	108 mm	32 mm	80 mm	50 mm	-0.05 mm to 0 mm	2	86 mm	11 mm	M10	Machined	1865K122	00000

Low-Profile Tee

Low-profile tee supports are shorter and narrower than standard tee supports, so they are good for tight spaces. Mount these supports to a surface from either the top or bottom using the unthreaded holes.

304 Stainless Steel—Stainless steel supports resist corrosion better than aluminum supports.

Anodized 6061 Aluminum—Aluminum supports are lightweight and resist corrosion.

		Overall					Mounting Hole
	For Shaft Dia.	Lg.	Wd.	Ht.	Ctr. Ht.	Ctr. Ht. Tolerance	No. of	Ctr.-to-Ctr.	Dia.	Clamping Screw Thread Size	Fabrication		Each
304 Stainless Steel



		1/4"	1 5/8"	3/8"	7/8"	9/16"	-0.002" to 0"	2	1 1/4"	0.16"	6-32	Machined	4040N11	000000


		3/8"	1 3/4"	3/8"	1"	5/8"	-0.002" to 0"	2	1 3/8"	0.16"	6-32	Machined	4040N12	00000
		1/2"	2"	1/2"	1 3/16"	3/4"	-0.002" to 0"	2	1 5/8"	0.19"	8-32	Machined	4040N13	00000
		5/8"	2 5/8"	1/2"	1 7/16"	15/16"	-0.002" to 0"	2	2 1/8"	0.22"	10-24	Machined	4040N14	00000
		3/4"	2 3/4"	1/2"	1 9/16"	1"	-0.002" to 0"	2	2 1/4"	0.22"	10-24	Machined	4040N15	000000
		1"	3 3/16"	3/4"	1 15/16"	1 1/4"	-0.002" to 0"	2	2 5/8"	0.28"	1/4"-20	Machined	4040N16	000000
		1 1/4"	3 3/4"	3/4"	2 5/16"	1 1/2"	-0.002" to 0"	2	3 1/8"	0.34"	5/16"-18	Machined	4040N17	000000
		1 1/2"	4"	3/4"	2 11/16"	1 3/4"	-0.002" to 0"	2	3 3/8"	0.34"	5/16"-18	Machined	4040N18	000000
		2"	5"	1 1/4"	3 5/16"	2 1/8"	-0.002" to 0"	2	4 1/4"	0.41"	3/8"-16	Machined	4040N19	000000
		8 mm	44 mm	10 mm	21 mm	12 mm	-0.05 mm to 0 mm	2	35 mm	4.5 mm	M4	Machined	4040N2	00000
		10 mm	46 mm	12 mm	25 mm	14 mm	-0.05 mm to 0 mm	2	38 mm	4.5 mm	M4	Machined	4040N21	00000


		12 mm	48 mm	12 mm	25 mm	14 mm	-0.05 mm to 0 mm	2	40 mm	4.5 mm	M4	Machined	4040N22	00000
		16 mm	62 mm	13 mm	31 mm	18 mm	-0.05 mm to 0 mm	2	50 mm	5.5 mm	M5	Machined	4040N23	00000
		20 mm	65 mm	13 mm	36 mm	22 mm	-0.05 mm to 0 mm	2	54 mm	5.5 mm	M5	Machined	4040N24	00000
		25 mm	80 mm	19 mm	44 mm	27 mm	-0.05 mm to 0 mm	2	66 mm	6.6 mm	M6	Machined	4040N25	000000
		30 mm	96 mm	19 mm	52 mm	32 mm	-0.05 mm to 0 mm	2	78 mm	9 mm	M8	Machined	4040N26	000000
		40 mm	108 mm	19 mm	66 mm	40 mm	-0.05 mm to 0 mm	2	90 mm	9 mm	M8	Machined	4040N27	000000


		Anodized 6061 Aluminum



				1/8"	1 1/16"	5/16"	1/2"	5/16"	-0.002" to 0"	2	13/16"	0.14"	4-40	Machined	1865K31	00000


				3/16"	1 3/16"	5/16"	9/16"	5/16"	-0.002" to 0"	2	15/16"	0.14"	4-40	Machined	1865K32	00000
				1/4"	1 5/8"	3/8"	7/8"	9/16"	-0.002" to 0"	2	1 1/4"	0.16"	6-32	Machined	1865K1	00000
				3/8"	1 3/4"	3/8"	1"	5/8"	-0.002" to 0"	2	1 3/8"	0.16"	6-32	Machined	1865K2	00000
				1/2"	2"	1/2"	1 3/16"	3/4"	-0.002" to 0"	2	1 5/8"	0.19"	8-32	Machined	1865K3	00000
				5/8"	2 5/8"	1/2"	1 7/16"	15/16"	-0.002" to 0"	2	2 1/8"	0.22"	10-24	Machined	1865K4	00000
				3/4"	2 3/4"	1/2"	1 9/16"	1"	-0.002" to 0"	2	2 1/4"	0.22"	10-24	Machined	1865K5	00000
				1"	3 3/16"	3/4"	1 15/16"	1 1/4"	-0.002" to 0"	2	2 5/8"	0.28"	1/4"-20	Machined	1865K6	00000
				1 1/4"	3 3/4"	3/4"	2 5/16"	1 1/2"	-0.002" to 0"	2	3 1/8"	0.34"	5/16"-18	Machined	1865K7	00000
				1 1/2"	4"	3/4"	2 11/16"	1 3/4"	-0.002" to 0"	2	3 3/8"	0.34"	5/16"-18	Machined	1865K8	00000
				2"	5"	1 1/4"	3 5/16"	2 1/8"	-0.002" to 0"	2	4 1/4"	0.41"	3/8"-16	Machined	1865K9	00000


				3 mm	21 mm	6 mm	10 mm	6 mm	-0.05 mm to 0 mm	2	17 mm	2.4 mm	M2	Machined	1865K33	00000
				4 mm	24 mm	6 mm	13 mm	7 mm	-0.05 mm to 0 mm	2	20 mm	2.4 mm	M2	Machined	1865K34	00000
				5 mm	36 mm	8 mm	18 mm	10 mm	-0.05 mm to 0 mm	2	30 mm	3.4 mm	M3	Machined	1865K35	00000
				6 mm	42 mm	10 mm	20 mm	11 mm	-0.05 mm to 0 mm	2	34 mm	4.5 mm	M4	Machined	1865K36	00000
				8 mm	44 mm	10 mm	21 mm	12 mm	-0.05 mm to 0 mm	2	35 mm	4.5 mm	M4	Machined	1865K21	00000
				10 mm	46 mm	12 mm	25 mm	14 mm	-0.05 mm to 0 mm	2	38 mm	4.5 mm	M4	Machined	1865K22	00000
				12 mm	48 mm	12 mm	25 mm	14 mm	-0.05 mm to 0 mm	2	40 mm	4.5 mm	M4	Machined	1865K23	00000
				16 mm	62 mm	13 mm	31 mm	18 mm	-0.05 mm to 0 mm	2	50 mm	5.5 mm	M5	Machined	1865K101	00000
				20 mm	65 mm	14 mm	36 mm	22 mm	-0.05 mm to 0 mm	2	54 mm	5.5 mm	M5	Machined	1865K24	00000
				25 mm	80 mm	19 mm	44 mm	27 mm	-0.05 mm to 0 mm	2	66 mm	6.6 mm	M6	Machined	1865K102	00000


				30 mm	96 mm	19 mm	52 mm	32 mm	-0.05 mm to 0 mm	2	78 mm	9 mm	M8	Machined	1865K103	00000
				35 mm	100 mm	19 mm	60 mm	34 mm	-0.05 mm to 0 mm	2	84 mm	9 mm	M8	Machined	1865K104	00000
				40 mm	108 mm	19 mm	66 mm	40 mm	-0.05 mm to 0 mm	2	90 mm	9 mm	M8	Machined	1865K105	00000
				50 mm	120 mm	25 mm	75 mm	45 mm	-0.05 mm to 0 mm	2	100 mm	9 mm	M8	Machined	1865K106	00000

L-Shaped

L-shaped supports have a mounting flange on one face of the support. They are narrower than tee supports. Mount these supports to a surface from either the top or bottom using the unthreaded holes.

Anodized 6061 Aluminum—Aluminum supports are lightweight and resist corrosion.

			Overall					Mounting Hole
	For Shaft Dia.	Base Wd.	Lg.	Wd.	Ht.	Ctr. Ht.	Ctr. Ht. Tolerance	No. of	Ctr.-to-Ctr.	Dia.	Clamping Screw Thread Size	Fabrication		Each
Anodized 6061 Aluminum



		3/8"	9/16"	1"	15/16"	1"	5/8"	-0.002" to 0"	2	1/2"	0.18"	8-32	Machined	1865K41	000000


		1/2"	11/16"	1 1/4"	1 3/16"	1 3/16"	3/4"	-0.002" to 0"	2	3/4"	0.2"	8-32	Machined	1865K42	00000
		3/4"	11/16"	1 11/16"	1 3/16"	1 9/16"	1"	-0.002" to 0"	2	1"	0.27"	10-24	Machined	1865K43	00000
		1"	11/16"	2"	1 7/16"	1 15/16"	1 1/4"	-0.002" to 0"	2	1 1/2"	0.27"	1/4"-20	Machined	1865K44	00000
		10 mm	12 mm	28 mm	24 mm	25 mm	14 mm	-0.05 mm to 0 mm	2	16 mm	5 mm	M4	Machined	1865K45	00000
		12 mm	12 mm	30 mm	24 mm	25 mm	14 mm	-0.05 mm to 0 mm	2	19 mm	5 mm	M4	Machined	1865K46	00000
		20 mm	17 mm	43 mm	30 mm	36 mm	22 mm	-0.05 mm to 0 mm	2	29 mm	6 mm	M5	Machined	1865K47	00000
		25 mm	17 mm	52 mm	36 mm	44 mm	27 mm	-0.05 mm to 0 mm	2	35 mm	7 mm	M6	Machined	1865K48	00000

Rectangular

Rectangular supports do not have a mounting flange. They are the most compact support we offer. Mount these supports to a surface from the bottom using the tapped holes.

Anodized 6061 Aluminum—Aluminum supports are lightweight and resist corrosion.

		Overall					Mounting Hole
	For Shaft Dia.	Lg.	Wd.	Ht.	Ctr. Ht.	Ctr. Ht. Tolerance	No. of	Ctr.-to-Ctr.	Clamping Screw Thread Size	Fabrication	Mounting Thread Size		Each
Anodized 6061 Aluminum



		3/8"	1"	3/8"	1"	5/8"	-0.002" to 0"	2	11/16"	6-32	Machined	6-32	1865K51	000000


		1/2"	1 1/4"	1/2"	1 3/16"	3/4"	-0.002" to 0"	2	13/16"	8-32	Machined	8-32	1865K52	00000
		3/4"	1 11/16"	1/2"	1 9/16"	1"	-0.002" to 0"	2	1 3/16"	10-24	Machined	10-24	1865K53	00000
		1"	2"	3/4"	1 15/16"	1 1/4"	-0.002" to 0"	2	1 1/2"	1/4"-20	Machined	1/4"-20	1865K54	00000
		10 mm	30 mm	12 mm	25 mm	14 mm	-0.05 mm to 0 mm	2	18 mm	M4	Machined	M4 × 0.7 mm	1865K55	00000
		12 mm	30 mm	12 mm	25 mm	14 mm	-0.05 mm to 0 mm	2	20 mm	M4	Machined	M4 × 0.7 mm	1865K56	00000
		20 mm	42 mm	13 mm	36 mm	22 mm	-0.05 mm to 0 mm	2	30 mm	M5	Machined	M5 × 0.8 mm	1865K57	00000
		25 mm	52 mm	19 mm	43 mm	27 mm	-0.05 mm to 0 mm	2	38 mm	M6	Machined	M6 × 1 mm	1865K58	00000

Base-Mount Linear Shaft Supports

For use with light to medium loads where shaft alignment is not critical, these shaft supports brace the end of a linear shaft along the ground or other flat surface. They are tees, so the mounting flanges are on the side. Mount the support to a surface from either the top or bottom using the unthreaded holes. Slide the shaft in to install, then tighten the included clamping screw to secure the shaft.

Tee

Image of Product. Front orientation. Contains Annotated. Linear Shaft Supports. Base-Mount Linear Shaft Supports.

6061 Aluminum—Aluminum supports are lightweight and corrosion resistant.

Iron—Iron shaft supports are heavier than aluminum shaft supports for a more stable mount.

Machined—Machined supports have flat, square surfaces, so they can be used to align other supports and parts in your system.

		Overall					Mounting Hole
	For Shaft Dia.	Lg.	Wd.	Ht.	Ctr. Ht.	Ctr. Ht. Tolerance	No. of	Ctr.-to-Ctr.	Dia.	Clamping Screw Thread Size	Fabrication		Each
6061 Aluminum



		1/4"	1 1/2"	1/2"	1 1/16"	11/16"	-0.002" to 0.002"	2	1 1/8"	0.16"	6-32	Machined	6068K21	000000


		3/8"	1 5/8"	5/8"	1 3/16"	3/4"	-0.002" to 0.002"	2	1 1/4"	0.16"	6-32	Machined	6068K22	00000


		Iron



				1/2"	2"	5/8"	1 5/8"	1"	-0.002" to 0.002"	2	1 1/2"	0.19"	8-32	Cast	6068K23	00000


				5/8"	2 1/2"	11/16"	1 3/4"	1"	-0.002" to 0.002"	2	1 7/8"	0.22"	10-32	Cast	6068K24	00000
				3/4"	2 3/4"	3/4"	2 1/8"	1 1/4"	-0.002" to 0.002"	2	2"	0.22"	10-32	Cast	6068K25	00000
				1"	3 1/4"	1"	2 9/16"	1 1/2"	-0.002" to 0.002"	2	2 1/2"	0.28"	1/4"-20	Cast	6068K26	00000
				1 1/4"	4"	1 1/8"	3"	1 3/4"	-0.002" to 0.002"	2	3"	0.34"	5/16"-18	Cast	6068K27	00000
				1 1/2"	4 3/4"	1 1/4"	3 1/2"	2"	-0.002" to 0.002"	2	3 1/2"	0.34"	5/16"-18	Cast	6068K28	00000
				2"	6"	1 1/2"	4 1/2"	2 1/2"	-0.002" to 0.002"	2	4 1/2"	0.41"	3/8"-16	Cast	6068K29	00000


				1060 Aluminum



						8 mm	42 mm	14 mm	33 mm	20 mm	-0.02 mm to 0.02 mm	2	32 mm	6 mm	M4	Cast	61815K33	00000


						10 mm	42 mm	14 mm	33 mm	20 mm	-0.02 mm to 0.02 mm	2	32 mm	6 mm	M4	Cast	61815K32	00000
						12 mm	42 mm	14 mm	38 mm	23 mm	-0.02 mm to 0.02 mm	2	32 mm	6 mm	M4	Cast	61815K34	00000
						16 mm	48 mm	16 mm	44 mm	27 mm	-0.02 mm to 0.02 mm	2	38 mm	6 mm	M4	Cast	61815K35	00000
						20 mm	60 mm	20 mm	51 mm	31 mm	-0.02 mm to 0.02 mm	2	45 mm	7 mm	M5	Cast	61815K36	00000
						25 mm	70 mm	24 mm	60 mm	35 mm	-0.02 mm to 0.02 mm	2	56 mm	7 mm	M6	Cast	61815K37	00000
						30 mm	84 mm	28 mm	70 mm	42 mm	-0.02 mm to 0.02 mm	2	64 mm	9 mm	M6	Cast	61815K38	00000
						35 mm	98 mm	32 mm	82 mm	50 mm	-0.02 mm to 0.02 mm	2	74 mm	11 mm	M8	Cast	61815K39	00000
						40 mm	114 mm	36 mm	96 mm	60 mm	-0.02 mm to 0.02 mm	2	90 mm	11 mm	M8	Cast	61815K41	00000

Base-Mount Dual Linear Shaft Supports

Secure two linear motion shafts parallel to each other and the mounting surface to build a system that moves smoothly and doesn’t bind. These supports are made of aluminum, so they are lightweight and resist corrosion. They are machined to have flat, square surfaces, so they can be used to align other supports and parts in your system. Slide your shafts into the holes and tighten the clamping screws (not included). The clamping screws also mount the shaft support to your surface, so your surface must have threaded holes.

Rectangular

Image of Product. Front orientation. Contains Annotated. Linear Shaft Supports. Base-Mount Dual Linear Shaft Supports.

			Overall, mm					Mounting Hole
	For Shaft Dia., mm	Ctr.-to-Ctr. Lg., mm	Lg.	Wd.	Ht.	Ctr. Ht., mm	Ctr. Ht. Tolerance, mm	No. of	Ctr.-to-Ctr., mm	Dia., mm	Clamping Screw Thread Size	Fabrication		Each
6061 Aluminum



		10	34	70	12	25	14	-0.015 to 0.015	2	55	5.5	M5	Machined	4063N11	000000


		12	42	85	14	32	18	-0.015 to 0.015	2	70	6.6	M6	Machined	4063N12	00000
		20	72	130	20	46	25	-0.015 to 0.015	2	108	11	M10	Machined	4063N13	00000
		25	88	160	25	56	30	-0.015 to 0.015	2	132	13.5	M12	Machined	4063N14	00000

Machinable Easy-Access Base-Mount Linear Shaft Supports

Create a support that fits the exact dimensions of your shaft to brace it along a flat surface. Good for use with square- and hex-profile shafts, these aluminum supports also work with round shafts of any diameter up to 1". Use them for light-to-medium-load linear motion applications where shaft alignment is not critical. These supports are tees, so the mounting flanges are on the side. Mount the support to a surface from either the top or bottom using the unthreaded holes. These supports are machined to have flat, square surfaces, so they can be used to align other supports and parts in your system.

Supports come with spacers between the two halves. For a snug fit, leave the spacers in place when machining, then remove before installing the shaft. Tighten the included clamping screws to secure the shaft.

Tee

Image of Product. Front orientation. Contains Annotated. Linear Shaft Supports. Machinable Easy-Access Base-Mount Linear Shaft Supports.

		Overall					Mounting Hole
	For Max. Shaft Dia.	Lg.	Wd.	Ht.	Ctr. Ht.	Ctr. Ht. Tolerance	No. of	Ctr.-to-Ctr.	Dia.	Clamping Screw Thread Size	Fabrication		Each
Black Anodized 6061 Aluminum



		1"	3 1/4"	1"	2 3/16"	1 1/2"	-0.002" to 0"	2	2 1/2"	0.28"	1/4"-20	Machined	1865K26	000000

Low-Profile Tee

		Overall					Mounting Hole
	For Max. Shaft Dia.	Lg.	Wd.	Ht.	Ctr. Ht.	Ctr. Ht. Tolerance	No. of	Ctr.-to-Ctr.	Dia.	Clamping Screw Thread Size	Fabrication		Each
Anodized 6061 Aluminum



		1"	3 3/16"	3/4"	1 15/16"	1 1/4"	-0.002" to 0"	2	2 5/8"	0.28"	1/4"-20	Machined	1865K25	000000