20mm Wide Rollers | McMaster-Carr

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 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.

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

Metric

Roller, mm		Stud, mm		Thread			Shoulder, mm			Radial Load Cap., lbs.
Dia.	Wd.	Dia.	Lg.	Size	Pitch, mm	Lg., mm	Dia.	Lg.	Max. Speed, rpm	Static	Dynamic	Max. Temp., °F	Bearing Type		Each
Black-Oxide Steel Flat Rollers with Seal
40	20	18	36.5	M18	1.5	19	27	0.8	3,300	7,200	4,300	250°	Needle Roller	00000000	0000000
Black-Oxide Steel Crowned Rollers with Seal
40	20	18	36.5	M18	1.5	19	27	0.8	3,300	7,200	4,300	250°	Needle Roller	00000000	000000

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 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.

Metric

Roller, mm		Stud, mm		Thread					Radial Load Cap., lbs.
Dia.	Wd.	Dia.	Lg.	Size	Pitch, mm	Lg., mm	Shoulder Lg., mm	Max. Speed, rpm	Static	Dynamic	Max. Temp., °F	Bearing Type	Includes		Each
Steel Crowned Rollers with Seal
40	20	18	36	M18	1.5	19	0.8	550	5,600	3,300	175°	Needle Roller	Mounting Hardware	00000000	0000000

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 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.

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

Metric

Roller, mm					Radial Load Cap., lbs.
Dia.	Wd.	For Shaft Dia., mm	Overall Wd., mm	Max. Speed, rpm	Static	Dynamic	Max. Temp., °F	Bearing Type	ID	ID Tolerance		Each
Black-Oxide Steel Crowned Rollers with Seal
40	20	17	21	2,900	3,500	2,400	210°	Needle Roller	17mm	-0.008mm to 0mm	0000000	000000

High-Load Shaft-Mount Track Rollers

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 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.

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

Metric

Without Seal

Roller, mm					Radial Load Cap., lbs.
Dia.	Wd.	For Shaft Dia., mm	Overall Wd., mm	Max. Speed, rpm	Static	Dynamic	Max. Temp., °F	Bearing Type		Each
Steel Flat Rollers without Seal
40	20	17	21	240	6,900	5,600	245°	Cylindrical Roller	0000000	0000000
47	20	17	21	240	6,900	5,600	245°	Cylindrical Roller	0000000	000000
Steel Crowned Rollers without Seal
40	20	17	21	240	6,900	5,600	245°	Cylindrical Roller	0000000	000000

Tapered Stud Track Rollers

Roller

Grease Fitting

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.

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.

Add a grease fitting to create a lubrication point.

Track Rollers
Roller, mm		Stud, mm		Shoulder, mm			Radial Load Cap., lbs.						Grease Fittings
Dia.	Wd.	Dia.	Lg.	Dia.	Lg.	Max. Speed, rpm	Static	Dynamic	Max. Temp., °F	Bearing Type		Each		Each
Steel Flat Rollers with Seal
40	20	18	25	32	0.8	5,900	5,600	3,300	175°	Needle Roller	0000000	000000	0000000	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		Stud		Thread		Shoulder		Flange			Static Load Cap., lbs.
Dia.	Wd.	Dia.	Lg.	Size	Lg.	Dia.	Lg.	OD	Thick.	Max. Speed, rpm	Radial	Thrust	Max. Temp., °F	Includes		Each
Steel Flat Rollers with Seal
Ball Bearing
26mm	20mm	10mm	23mm	M10	13mm	13.1mm	0.8mm	35mm	5mm	Not Rated	220	130	225°	Mounting Hardware	00000000	000000