Miniature Track Wheels | McMaster-Carr

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31 Products

Thrust-Load-Rated Corrosion-Resistant Threaded Track Rollers


303 Stainless Steel

These rollers are rated to handle radial and thrust (top and side) loads simultaneously. Also known as cam followers, track rollers support loads while guiding and positioning work. Thread the stud directly into a component or secure with a nut for through-hole mounting. All rollers are permanently lubricated and have end seals to retain lubricant and protect rolling elements from dirt and contamination.

303 Stainless Steel Rollers—303 stainless steel rollers are more corrosion resistant than 440C stainless steel rollers.

	Roller		Stud		Thread		Shoulder			Load Capacity, lb.
	Dia.	Wd.	Dia.	Lg.	Size	Lg.	Dia.	Lg.	Max. Rotation Speed, rpm	Static Radial	Dynamic Radial	Static Thrust	Max. Temp., ° F	Bearing Type	Includes		Each
303 Stainless Steel Flat Rollers With Seal







				Slotted Roller-Head Drive

				3/16"	13/64"	3/32"	1/4"	2-56	1/8"	1/8"	1/16"	1,500	15	50	5	245	Ball Bearing	Mounting Hardware	3668K2	000000


				1/4"	7/64"	1/8"	1/2"	4-40	1/4"	3/16"	1/16"	1,500	20	60	20	245	Ball Bearing	Mounting Hardware	3668K22	00000
				1/4"	13/64"	3/32"	1/4"	2-56	1/8"	1/8"	1/16"	1,500	15	50	10	245	Ball Bearing	Mounting Hardware	3668K3	00000
				3/8"	1/8"	3/16"	1/2"	8-32	1/4"	9/32"	1/16"	1,500	50	160	50	245	Ball Bearing	Mounting Hardware	3668K23	00000
				3/8"	1/4"	1/8"	7/16"	4-40	1/4"	3/16"	1/16"	1,500	30	100	20	245	Ball Bearing	Mounting Hardware	3668K11	00000
				1/2"	3/16"	1/4"	5/8"	10-32	3/8"	3/8"	1/16"	1,500	90	240	80	245	Ball Bearing	Mounting Hardware	3668K24	00000
				1/2"	5/16"	3/16"	1/2"	8-32	1/4"	9/32"	1/16"	1,500	90	250	50	245	Ball Bearing	Mounting Hardware	3668K12	00000
				5/8"	13/64"	1/4"	5/8"	10-32	3/8"	3/8"	1/16"	1,500	120	330	120	245	Ball Bearing	Mounting Hardware	3668K25	00000
				5/8"	7/16"	1/4"	5/8"	10-32	3/8"	3/8"	1/16"	1,500	170	450	80	245	Ball Bearing	Mounting Hardware	3668K13	00000
				3/4"	9/32"	1/4"	5/8"	10-32	3/8"	3/8"	1/16"	1,500	190	500	150	245	Ball Bearing	Mounting Hardware	3668K26	00000
				3/4"	1/2"	1/4"	5/8"	10-32	3/8"	3/8"	1/16"	1,500	200	500	120	245	Ball Bearing	Mounting Hardware	3668K14	00000


				7/8"	5/8"	1/4"	5/8"	10-32	3/8"	3/8"	1/16"	1,500	300	800	150	245	Ball Bearing	Mounting Hardware	3668K15	00000

Threaded V-Groove Track Rollers

Thread the stud directly into a component or secure with a nut for through-hole mounting. Rollers are for use with Angle Rails for V-Groove Track Rollers. They handle radial and thrust (top and side) loads and work well in dirty environments because debris falls off the angled rail. Also known as cam followers, track rollers support loads while guiding and positioning work. All rollers are permanently lubricated.

Hex Stud-End Drive


Hex Stud End Drive

With Seal—Rollers with a seal block out dust and other contaminants better than shielded rollers, but they hold more heat. Their seal also helps retain lubricant.

	Roller		Stud		Thread		Shoulder		Groove			Load Capacity, lb.
	Dia.	Wd.	Dia.	Lg.	Size	Lg.	Dia.	Lg.	Wd.	Dp.	Max. Rotation Speed, rpm	Static Radial	Dynamic Radial	Static Thrust	Max. Temp., ° F	Bearing Type	Includes		Each
Steel V-Groove Rollers With Seal



		1 1/2"	3/4"	7/16"	1"	7/16"-20	1/2"	1/2"	1/32"	3/8"	3/16"	8,000	230	230	140	225	Ball Bearing	Mounting Hardware	6318K61	0000000


		2"	13/16"	1/2"	1 1/4"	1/2"-20	5/8"	5/8"	1/32"	5/8"	5/16"	6,000	600	500	370	225	Ball Bearing	Mounting Hardware	6318K62	000000
		2 1/2"	1 1/4"	3/4"	1 3/4"	3/4"-16	7/8"	1"	1/16"	1"	1/2"	6,000	1,100	1,000	680	225	Ball Bearing	Mounting Hardware	6318K63	000000
		3 1/2"	1 5/8"	7/8"	2"	7/8"-14	1 1/8"	1"	1/16"	1 1/4"	5/8"	4,000	2,200	1,900	1,400	225	Ball Bearing	Mounting Hardware	6318K64	000000

Miniature High-Load Threaded Track Rollers

Despite their size, these rollers handle high radial load capacities without sacrificing speed. They’re often used in robots to guide small movements.

	Roller, mm		Stud, mm		Thread		Shoulder, mm			Load Capacity, lb.
	Dia.	Wd.	Dia.	Lg.	Size	Lg., mm	Dia.	Lg.	Max. Rotation Speed, rpm	Static Radial	Dynamic Radial	Max. Temp., ° F	Bearing Type	Includes		Each
Steel Flat Rollers Without Seal







				Hex Roller-Head Drive

				4.5	2.5	2	4	M2 × 0.4 mm	2	4.3	0.7	21,000	160	170	245	Needle	Mounting Hardware	4231N11	0000000


				5	4.5	2.5	5	M2.5 × 0.45 mm	2.5	4.8	0.7	5,000	240	220	175	Needle	Mounting Hardware	4231N13	00000
				6	5.5	3	6	M3 × 0.5 mm	3	5.8	0.7	5,000	390	230	175	Needle	Mounting Hardware	4231N14	00000
				8	7	4	8	M4 × 0.7 mm	4	7.7	0.7	5,000	680	520	175	Needle	Mounting Hardware	4231N15	00000


				440C Stainless Steel Flat Rollers Without Seal







								Hex Roller-Head Drive

								4.5	2.5	2	4	M2 × 0.4 mm	2	4.3	0.7	21,000	130	135	245	Needle	Mounting Hardware	4231N12	000000


								5	4.5	2.5	5	M2.5 × 0.45 mm	2.5	4.8	0.7	5,000	240	220	175	Needle	Mounting Hardware	4231N16	00000
								6	5.5	3	6	M3 × 0.5 mm	3	5.8	0.7	5,000	390	230	175	Needle	Mounting Hardware	4231N17	00000
								8	7	4	8	M4 × 0.7 mm	4	7.7	0.7	5,000	680	520	175	Needle	Mounting Hardware	4231N18	00000

Miniature High-Speed Threaded Track Rollers

Built to handle high speeds for their size. These track rollers have an outer ring that supports higher speeds than standard-sized track rollers. They also create less friction than miniature high-load rollers while spinning. You can use these rollers for precise movements in robots or other miniature applications.

	Roller, mm		Stud, mm		Thread		Shoulder, mm			Load Capacity, lb.
	Dia.	Wd.	Dia.	Lg.	Size	Lg., mm	Dia.	Lg.	Max. Rotation Speed, rpm	Static Radial	Dynamic Radial	Max. Temp., ° F	Bearing Type	Includes		Each
Steel Flat Rollers Without Seal







				Hex Roller-Head Drive

				5	3	2.5	5	M2.5 × 0.45 mm	2.5	4.8	0.7	33,600	75	95	245	Needle	Nut	4229N12	0000000


				6	4	3	6	M3 × 0.5 mm	3	5.8	0.7	28,000	130	140	245	Needle	Nut	4229N13	000000
				8	5	4	8	M4 × 0.7 mm	4	7.7	1	21,000	250	250	245	Needle	Nut	4229N14	000000


				440C Stainless Steel Flat Rollers Without Seal







								Hex Roller-Head Drive

								4.5	2.5	2	4	M2 × 0.4 mm	2	4.3	0.7	42,000	35	50	230	Needle	Nut	4229N15	000000


								5	3	2.5	5	M2.5 × 0.45 mm	2.5	4.8	0.7	33,600	60	75	245	Needle	Nut	4229N16	000000
								6	4	3	6	M3 × 0.5 mm	3	5.8	0.7	28,000	100	110	245	Needle	Nut	4229N17	000000
								8	5	4	8	M4 × 0.7 mm	4	7.7	1	21,000	200	200	245	Needle	Nut	4229N18	000000