SKU: 20679931496

638 Full Ceramic Ball Bearings 8x28x9mm, 30 Pack, Zirconia ZrO2 Miniature Bearings with PTFE Cage, High-Performance Bearings for Precision Hobby, CNC, Robotics, and Medical Equipment

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Description

638 Full Ceramic Ball Bearings 8x28x9mm, 30 Pack, Zirconia ZrO2 Miniature Bearings with PTFE Cage, High-Performance Bearings for Precision Hobby, CNC, Robotics, and Medical Equipment30 Pack 8x28x9mm Full Ceramic Zirconia Bearings 30 pcs pack of 8x28x9 mm full ceramic Zirconia bearings 638 Full Ceramic Bearings with Zirconia balls and ZrO2 races, plus a PTFE cage, delivering minimal friction, superior wear resistance, and chemical stability. This setup suits lab gear, precision robotics, and CNC or automation projects requiring non magnetic, long life action. Inner diameter 8 mm, outer diameter 28 mm, width 9 mm Ball material:

30-Pack 8x28x9mm Full Ceramic Zirconia Bearings
✔️ 30 pcs pack of 8x28x9 mm full ceramic Zirconia bearings

638 Full Ceramic Bearings with Zirconia balls and ZrO2 races, plus a PTFE cage, delivering minimal friction, superior wear resistance, and chemical stability. This setup suits lab gear, precision robotics, and CNC or automation projects requiring non-magnetic, long-life action.

✅ Inner diameter 8 mm, outer diameter 28 mm, width 9 mm
✅ Ball material: Zirconia Ceramic (ZrO2)
✅ Cage material: PTFE (Polytetrafluoroethylene)
✅ Races material: Zirconia Ceramic (ZrO2)
✅ Pack size: 30 bearings per pack

💡 What is a ceramic bearing used for in precision equipment? Ceramics excel where low friction, non-magnetic operation, and chemical resistance matter.
- handy in clean-room setups and chemical processing lines
- handy in high-speed, non-magnetic drives
- handy where long life and corrosion resistance are key

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 20679931496

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4.6 ★★★★★
Based on 10 reviews
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Product Reviews
A
Verified Purchase
Animal Lover
West Palm Beach, US
★★★★★ 5
Great trial set. Just be careful throwing the orange one!
Style: Assorted Balls (Pack of 3), Size: 2.5 inch
Blue isn't that easy to see in the yard White charges with bright light/UV and is truly a game changer for night-time fetch. Both dogs clearly favor it. Orange is easy to see in the grass at day They're 3 different weights as well, so double trial. I prefer medium for my big dogs, though light performs well too The orange is HEAVY and unyielding. Do NOT throw it with a ball thrower. It could damage your house or knock your dog out. Seems tough though.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 16, 2026
S
Verified Purchase
Spo509
Battle Creek, US
★★★★★ 3
Not as good as chuck it anymore
Style: Fetch Balls (Pack of 10), Size: 2.5 inch
I have bought these before and the where just like the chuck it balls. These are not those balls. The are lighter and my dog has already cause damage to one
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 16, 2026
M
Verified Purchase
MissRachelle
Louisville, US
★★★★★ 5
Cheap but expected, worked as intended, none of them broke.
Size: 1000 Teaspoons
Seems to be cheap quality but what else can you expect for the price? I needed something cheap that would work for cold foods, and these delivered. They lasted me forever and I didn’t have any break, I just didn’t trust them with super hot foods. I will buy again in a heartbeat though because for everything else they work great. They are small spoons that don’t hold much, bend easily, are really lightweight and I wish they came in portions or wraps because after opening they sat there collecting dust through the hole in the box and so I had to transfer them to a closed container for sanitary purposes. Again though, I didn’t really expect anything else, so I’m happy regardless.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 26, 2025
S
Verified Purchase
Snagglepuss
West Palm Beach, US
★★★★★ 5
Great stirring spoons
Size: 1000 Teaspoons
Great price. Cheapest spoons for stirring. Don't expect to eat ice cream with them though. Me happy.
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Reviewed in the United States on May 15, 2026
J
Verified Purchase
JakalSwitch
Port Orchard, US
★★★★★ 4
Pretty pathetic spoons, fantastic price to quantity ratio
Size: 1000 Teaspoons
Weak, not very rigid. But you can't beat the price or quantity! Don't serve these at a party, you will be made fun of.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 28, 2026

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