20mm Rollers | McMaster-Carr

Filter by

System of Measurement

Shaft Diameter

Roller Profile

Roller Material

Roller Mount Type

Thread Size

Roller Width

For Load Direction

Combined Radial and Thrust

Track Roller Type

Maximum Temperature

Stud Material

Hardness Rating

Stud Diameter

Material

Shaft Mount Type

Groove Width

Stud Length

With Seal

Bearing Type

U.S.–Mexico–Canada Agreement (USMCA) Qualifying

Yes

REACH

Compliant

RoHS

Compliant

Export Control Classification Number (ECCN)

EAR99

DFARS Specialty Metals

Exempt

Forward

How can we improve?

12 Products

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



		20	10	5	8	Set Screw	1	Yes	-40 to 180	Durometer 55A (Medium) Blue , Durometer 70A (Hard) Orange	2481K113	000000


		20	10	6	8	Set Screw	2	Yes	-40 to 180	Durometer 55A (Medium) Blue , Durometer 70A (Hard) Orange	2481K114	00000

Threaded V-Groove Track Rollers with Adjustable Shoulder

Also known as eccentric track rollers, the shoulder adjusts up or down to align to your track, enabling uniform alignment among rollers in a system. 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. Secure the stud with a nut for through-hole mounting. All rollers are permanently lubricated.

External Hex Shoulder Drive

440C Stainless Steel Rollers—440C stainless steel rollers offer better corrosion resistance than steel rollers.

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.

Plastic Overmold—Rollers with a plastic overmold make less noise than other rollers, and they’re suitable for corrosive environments. However, they have lower weight capacities than other similarly sized rollers and they’re less corrosion resistant than other stainless steel rollers.

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



		20	8	6	8	M6 × 1 mm	6	3.4	11.11	4	2	5,000	270	270	50	245	—	Mounting Hardware	3672K21	000000


		440C Stainless Steel V-Groove Rollers With Seal



				20	8	6	15	M6 × 1 mm	9	2.1	12	4	2	5,300	220	220	40	500	—	Mounting Hardware	3672K44	000000


				440C Stainless Steel V-Groove Rollers Without Seal



						20	8	6	8	M6 × 1 mm	6	3.3	11.11	4	2	5,300	270	270	50	245	Shielded	—	3672K39	00000


						20	8	6	8	M6 × 1 mm	6	3.3	12	4	2	975	12	12	6	245	Plastic Overmold, Shielded	—	3672K38	00000
						20	8	6	15	M6 × 1 mm	9	2.1	12	4	2	3,400	270	270	50	245	Shielded	Mounting Hardware	3672K42	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.

External Hex Shoulder Drive


External Hex Shoulder Drive

440C Stainless Steel Rollers—440C stainless steel rollers offer better corrosion resistance than steel rollers.

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



		20	8	6	15	M6 × 1 mm	9	2.1	12	4	2	5,300	270	270	50	210	Ball Bearing	—	Mounting Hardware	3672K12	000000


		20	8	8	8	M8 × 1.25 mm	8	3.3	11.11	4	2	5,000	270	270	50	245	Ball Bearing	—	—	3672K17	00000


		Steel V-Groove Rollers Without Seal



				20	8	6	15	M6 × 1 mm	9	2.1	12	4	2	5,300	270	270	50	245	Ball Bearing	Shielded	Mounting Hardware	3672K28	00000


				20	8	8	8	M8 × 1.25 mm	8	3.3	11.11	4	2	5,300	120	120	20	245	Ball Bearing	Shielded	—	3672K27	00000


				440C Stainless Steel V-Groove Rollers With Seal



						20	8	6	15	M6 × 1 mm	9	2.1	12	4	2	5,000	220	220	45	500	Ball Bearing	—	Mounting Hardware	3681K22	000000