Nylon wheel type roller - All industrial manufacturers
Amazon.com: Letool 4pcs U type groove pulley nylon Guide Pulley Rolling Bearing U Groove Roller Wheel 8x40x20mm for Driving Mechanical Equipment, or Used in Doors and Windows : Industrial & Scientific
D 1639 - Nylon Ball Bearing Roller Replacement, 7/8 inches Diameter, 2 per package
2 PCS / 2 Inch x 4 Inch Nylon Roller Wheel with Bearings CNC Guiding Wheel Flat Belt Idler 2" Diameter 4" Width 1/2 Bearing Bore: Amazon.com: Industrial & Scientific
50/15/8/12 Nylon Roller with 6001 2RS Ball Bearing
1-1/2" Nylon Rollers with Sealed Ball-bearings (2-pack)
4 PCS 40 mm x 30 mm Nylon Roller Wheel with Bearings, CNC Guiding Wheel Flat Belt Idler 40 MM Diameter 30 MM Width 8 MM Bearing Bore: Amazon.com: Industrial & Scientific
Amazon.com: HardwareXsupply 2" Nylon Sealed Garage Door Rollers, 6200ZZ High Performance Ball Bearing (10 Pack, 4" Stem) : Tools & Home Improvement
Round Plastis Nylon Roller Bearing Wheel, Sliding Door Bearing, Bearing for Sliding Door, Shower Door Bearing Wheels - China Bearing Wheel, Bearing for Sliding Door | Made-in-China.com