Best Crossed roller Bearing

Garage Door 2\ NYLON ROLLER w/ Cap 7\ Stem 13 Ball Bearing Heavy Duty Smooth by The ROP Shop

The ROP Shop replacement (Pack of 2) 2" Nylon Rollers with 6200ZZ Bearing Offer Quieter Garage Door Use.
Specs - Roller Diameter: 1 13/16" for a 2" track. Roller Thickness: 1/2". Stem Length: 4 1/8" (3.5" from bevel). Stem Diameter: 7/16". Single Load: 150lbs. Bearing Type: 6200ZZ Precision. Roller Material: Nylon. Roller Color: White. Refer to images 2 & 3 for more information.
Rollers are constructed from nylon that is softer and quieter than plastic or metal rollers and smoother than original equipment rollers. Features a reinforced dual-wall bearing cage, sealed 6200ZZ ball bearing plus double plating thickness on stem designed for max performance and ultra-life weather protection. Garage door roller can reuse 100,000 cycles.
Installation Tips - Method 1: Slightly bend track at the seam to remove, replace roller and move the door to do the next roller (repeat on other side). Method 2: Remove screws that attach brackets to your door, secure cable before releasing the bottom brackets that are under the cable spring tension, then clamp the cable to the track, slide out old rollers, place new rollers in their place and screw in backers.

The ROP Shop replacement (Pack of 2) 2" Nylon Garage Door Rollers with 4" Stem & 11-Ball 6200ZZ Bearing.
Specs - Roller Diameter: 1 13/16" for a 2" track. Roller Thickness: 1/2". Stem Length: 4 1/8" (3.5" from bevel). Stem Diameter: 7/16". Single Load: 150lbs. Bearing Type: 6200ZZ Precision. Roller Material: Nylon. Roller Color: White. Refer to images 2 & 3 for more information.
Rollers are constructed from nylon that is softer and quieter than plastic or metal rollers and smoother than original equipment rollers. Features a reinforced dual-wall bearing cage, sealed 6200ZZ ball bearing plus double plating thickness on stem designed for max performance and ultra-life weather protection. Garage door roller can reuse 100,000 cycles.
Installation Tips - Method 1: Slightly bend track at the seam to remove, replace roller and move the door to do the next roller (repeat on other side). Method 2: Remove screws that attach brackets to your door, secure cable before releasing the bottom brackets that are under the cable spring tension, then clamp the cable to the track, slide out old rollers, place new rollers in their place and screw in backers.

LKPB crossed roller bearings, with proven performance and quality testing, are suitable for the joint parts or rotating parts of industrial robots, as well as machining center tables, robotic parts, precision rotary tables, medical devices, measuring instruments, IC manufacturing equipment, etc..
High precision crossed roller bearings, The product accuracy of P5 / P4 / P2 is optional, Low noise, High temperature-resistance, Long life..
As a manufacturer, we can provide technical support, please contact us if you have any questions.
Complete models, fast delivery, Products can be customized according to requirements.
Package include: 1 Piece or depend on your selection.

The Bont FX1 roller skate wheel is an ultra-lightweight, ultra-high-performance roller skate wheel. With super high rebound urethane combined with a unique mini bearing hub for fast acceleration and quick laterals.
The Bont FX1 wheel is great for roller derby or indoor rink skating. It is one of the only wheels on the market that uses the smaller 688 or 167 bearings rather than the traditional 608 skate bearing..
The mini roller skate bearing saves 12 grams per bearing and a whopping 192 grams (6.8oz) on a set of skates. That is a pretty huge weight saving. The mini bearings also spool up faster than 608 bearings getting you up to speed sooner for greater acceleration.
The 688 mini roller skate bearing has an exceptionally fine polished bearing track surface and incredibly precise balls. The lightweight plastic cages allow for lower rolling resistance.
Standard 60mm diameter by 38mm wide with 92A hardness. Comes in a set of 8 with 688 bearings.

【3 Size Thrust Needle Roller Bearing Assortment】You will get 9 pcs 20*35*2MM thrust needle roller bearings with washers, 9 pcs 25*42*2MM thrust needle roller bearings with washers, 6 pcs 35*52*2MMthrust needle roller bearings with washers, totally 24 pcs..
【Premium Material】Made of chromium steel featured with a nice load carrying capacity and stiffness, high hardness, and high precision, smooth surface no residual burr that smooth to touch. Heat treatment process makes the bearing ball stronger, avoiding to deformed for a long time..
【Feature】Needle Roller Thrust Bearings can accommodate axial loads in one direction only. Low noise and long service life, easy to maintain. Keep the bearing working environment clean and bearing lubricated in time..
【Huge Function】Designed for low speed operation and axial loads only. Steel cage guides and evenly spaced rollers for reduced friction, vibration, and noise..
【Wide Application】 Combined with 2 washers, make objects rotating smooth! Perfect for oven turntable, pump, rotating applications, motors, bikes, air conditioning, machine tools, automobiles, ect..