40mm Rollers | McMaster-Carr

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Dynamic Radial Load Capacity

Less than 1,000 lb.

1,000 lb. to 9,999 lb.

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12 Products

High-Load Shaft-Mount Track Rollers


Without Seal

With a double row of cylindrical roller bearings, these rollers provide the highest combination of speed and dynamic radial load ratings of any shaft-mount track roller we offer. Also known as yoke-style cam followers, these rollers have more mounting flexibility than threaded track rollers. They're typically mounted onto a shaft or clevis rod end.

Crowned Roller Profile—Crowned rollers have a slight curve, which is invisible to the naked eye, to stay centered on surfaces that are not perfectly aligned and/or not perfectly flat.

Without Seal—Lubricate rollers without seal through a hole and groove in the inner ring.

	Roller, mm					Load Capacity, lb.
	Dia.	Wd.	For Shaft Dia., mm	Overall Wd., mm	Max. Rotation Speed, rpm	Static Radial	Dynamic Radial	Max. Temp., ° F	Bearing Type	ID, mm	ID Tolerance, mm		Each
Steel Flat Rollers Without Seal



		40	20	17	21	240	6,900	5,600	245	Cylindrical	17	-8 to 0	3670K27	0000000


		Steel Crowned Rollers Without Seal



				40	20	17	21	240	6,900	5,600	245	Cylindrical	17	-8 to 0	3670K31	000000

Threaded Track Rollers

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.

Crowned Roller Profile—Crowned rollers have a slight curve, which is invisible to the naked eye, to stay centered on surfaces that are not perfectly aligned and/or not perfectly flat.

With Seal—Rollers with seal have end seals to protect rolling elements from dirt and contamination.

	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		Each
Black-Oxide Steel Flat Rollers With Seal







				Hex Roller-Head Drive

				40	20	18	36.5	M18 × 1.5 mm	19	27	0.8	3,300	7,200	4,300	250	Needle	1470T632	0000000


				Black-Oxide Steel Crowned Rollers With Seal







								Hex Roller-Head Drive

								40	20	18	36.5	M18 × 1.5 mm	19	27	0.8	3,300	7,200	4,300	250	Needle	1470T631	000000

Flanged Threaded Track Rollers

Thread the stud directly into a component or secure with a nut for through-hole mounting. The flange provides guidance and helps the roller stay on track. All rollers are permanently lubricated and have end seals to retain lubricant and protect rolling elements from dirt and contamination.

	Roller, mm		Stud, mm		Thread		Shoulder, mm		Flange, mm			Load Capacity, lb.
	Dia.	Wd.	Dia.	Lg.	Size	Lg., mm	Dia.	Lg.	OD	Thick.	Max. Rotation Speed	Static Radial	Static Thrust	Max. Temp., ° F	Includes		Each
Steel Flat Rollers With Seal







				Ball Bearing

				40	30	14	40	M14 × 2 mm	26	18	1.6	54	8.8	Not Rated	1,100	680	225	Mounting Hardware	6318K115	000000

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



		40	19.2	10	23	M10 × 1 mm	13	13.1	0.8	14	7	Not Rated	220	240	130	225	Ball Bearing	Mounting Hardware	6318K85	000000

Shaft-Mount Track Rollers

Also known as yoke-style cam followers, these rollers have more mounting flexibility than threaded track rollers. They're typically mounted onto a shaft or clevis rod end. Lubricate rollers through a hole and groove in the inner ring.

Crowned Roller Profile—Crowned rollers have a slight curve, which is invisible to the naked eye, to stay centered on surfaces that are not perfectly aligned and/or not perfectly flat.

With Seal—Rollers with seal have end seals to protect rolling elements from dirt and contamination.

	Roller, mm					Load Capacity, lb.
	Dia.	Wd.	For Shaft Dia., mm	Overall Wd., mm	Max. Rotation Speed, rpm	Static Radial	Dynamic Radial	Max. Temp., ° F	Bearing Type	ID, mm	ID Tolerance, mm		Each
Black-Oxide Steel Crowned Rollers With Seal



		40	20	17	21	2,900	3,500	2,400	210	Needle	17	-0.008 to 0	8031N17	000000

Tight-Tolerance Drive Rollers

The surface of these rollers is molded to a tolerance of either ±0.003 in. or ±0.08 mm to provide more consistent surface contact. Also known as contact wheels and feed rollers, they have tapped hubs that allow you to mount them onto a shaft or stud to transmit power. The urethane rubber surface is nonmarring and wear resistant.

	Roller, mm					Set Screws
	Dia.	Wd.	For Shaft Dia., mm	Hub Wd., mm	Shaft Mount Type	No. Required	Included	Temp. Range, ° F	Choose a Hardness (Hardness Rating)		Each
Urethane Rubber Rollers with Aluminum Hub



		40	12	10	8	Set Screw	2	Yes	-40 to 180	Durometer 55A (Medium) Blue , Durometer 70A (Hard) Orange	2481K122	000000


		40	12	12	8	Set Screw	2	Yes	-40 to 180	Durometer 55A (Medium) Blue , Durometer 70A (Hard) Orange	2481K123	00000

Maintenance-Free Threaded Track Rollers

Because they never need to be relubricated, these rollers are a good choice for hard-to-reach places. 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. Some rollers have end seals to block dirt and contamination.

Crowned Roller Profile—Crowned rollers have a slight curve, which is invisible to the naked eye, to stay centered on surfaces that are not perfectly aligned and/or not perfectly flat.

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







				Hex Roller-Head Drive

				40	20	18	36	M18 × 1.5 mm	19	0.8	550	5,600	3,300	175	Needle	Mounting Hardware	1592T103	0000000

Tapered Stud Track Rollers

Roller

Grease

Fitting

Add a grease fitting to create a lubrication point.

Install these rollers in worn-out mounting holes or where you don’t have access to the back of the mounting hole. The stud is tapered, so you can quickly secure them in place with a set screw (not included) instead of a nut on the back like traditional rollers. Keep in mind, this reduces their radial capacity.

With Seal—Rollers with a seal protect rolling elements from dirt and contamination better than shielded rollers, but they do hold more heat. The seal also helps retain lubrication.

	Rollers													Grease Fittings
	Roller, mm		Stud, mm		Shoulder, mm			Load Capacity, lb.
	Dia.	Wd.	Dia.	Lg.	Dia.	Lg.	Max. Rotation Speed, rpm	Static Radial	Dynamic Radial	Max. Temp., ° F	Bearing Type		Each		Each
Steel Flat Rollers With Seal







				Slotted Roller-Head Drive

				40	20	18	25	32	0.8	5,900	5,600	3,300	175	Needle	4227N17	000000	4227N19	000000