1 PC R4 Full ZrO2 Ceramic Ball Bearing Zirconia Oxide 1/4"x5/8"x10/51"

$17.58 Buy It Now or Best Offer, $1.34 Shipping, 30-Day Returns, eBay Money Back Guarantee
Seller: Top-Rated Seller sdm2020_tools ✉️ (733) 99.4%, Location: 南京市, CN, Ships to: WORLDWIDE, Item: 174852182849 1 PC R4 Full ZrO2 Ceramic Ball Bearing Zirconia Oxide 1/4"x5/8"x10/51". description

Zirconium oxide Full ceramic bearing with diamagnetic electrically insulating, wear resistance and corrosion resistance, Self-lubricating, high temperature resistance, cold and other characteristics, can be used in extremely harsh environment and special conditions. The ferrule and the rolling body adopts zirconium oxide ( ZrO2 ) ceramic materials, the retainer using polytetrafluoroethylene ( PTFE ) as standard equipment

1. high speed: with cold resistance, stress resistance to pressure, small elastic, thermal conductivity, light weight, the advantages of small friction coefficient, can be applied to 12000 rpm to 75000 rpm for high speed spindle and other high precision equipment;

2. high temperature resistant: use the temperature at 100 degrees to 600 degrees between the generated due to the range of temperature expansion. Can be used in furnaces, plastic, steel and other high temperature equipment;

3.corrosion resistance: the material itself has corrosion resistance characteristics, can be used in strong acid, strong alkali, inorganic, organic salt, water and other fields, such as: plating equipment, electronic equipment, chemical machinery, shipbuilding, and other medical equipment.

4. because of no magnetic, magnetic dust absorption, can reduce premature bearing flaking, big noise. Available in the demagnetization device. Precision instruments and other fields.

5. due to electrical resistance, electrical insulation, can avoid arc damage bearings, can be used in a variety of insulation of power equipment.

6. because of the unique ceramic materials, vacuum oil-free self-lubricating property, in ultra-high vacuum environment, zirconia ceramic bearings can overcome the plain bearing can not realize the problems of lubrication.

Main uses: Medical equipment, optical instruments, printing machinery, machine tools, high-speed motor, low temperature engineering, food processing machinery

Bearing number Bore Diameter (d) Outside Diameter (D) Width (B)
R144 1/8in 1/4in 3/32in or 7/64in
R2 1/8in 3/8in 5/32
R3 3/16in 1/2in 5/32in
R4 1/4in 5/8in 10/51in
R6 3/8in 7/8in 7/32 or 9/32in
R8 1/2in 1-1/8in 1/4in or 5/16in
R10 5/8in 1-3/8in 9/32in or 11/32in
R12 3/4in 1-5/8in 7/16in
Payment Method
  • PayPal is only payment method we accepted
  • Payment must be received wihtin 7 days after the purchasing the item
  • Item will be shipped immediately on the same or next business day of receiving full payment
  • eCheck Payment will be shipped after the eCheck is cleared in our PayPal account
Shipping Policy
  • We ship worldwide
  • All items will be checked before packing. All items are new and of high quality
  • We will ship the order to PayPal confirmed address only
  • Item will be shipped within 1 - 3 business days upon receipt of payment, excluding weekends and public holidays
  • Delivery time is about 8 - 28 business days and it may take up to 8 weeks to some European countries and South American countries due to strict custom inspection
  • Shipping fee includes eBay fee, packing, warehouse, distribution, order handling and processing costs
  • We will use Hong Kong Post Air Mail to send all the orders. If the buyer would like to choose Fedex, DHL, or other shipping services, please send us an email before bidding
  • Please note that some countries will have custom duty or tax for certain items. It is the buyer's responsibility to pay all endued custom duty or tax. We are not responsible for any custom duty or tax since our price do not include this charge
Returns Policy
  • All sales are final Serious Buyers only.
  • Return 14-day Warranty with Exchange for defective, malfunctioned, incorrect or parts-missing items. Please notify us and simply return the item with all parts and accessories packed in original packing within 14 days of receipt.
  • Exchange or Refund We will either exchange or full refund the fee by buyer's choice.
  • Return Shipping Cost Buyer will be responsibe for the return shipping cost under all circumstances.
  • Condition: New
  • Model: R4CE
  • Country/Region of Manufacture: China
  • Material: Ceramic
  • Width: 4.978 mm
  • Outside Diameter: 15.875 mm
  • Brand: Unbranded
  • Bore Diameter: 6.35 mm
  • Bearings Type: Ball Bearing

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  •  Popularity - 7 watchers, 0.0 new watchers per day, 982 days for sale on eBay. Super high amount watching. 65 sold, 9 available.
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  •  Seller - 733+ items sold. 0.6% negative feedback. Top-Rated Plus! Top-Rated Seller, 30-day return policy, ships in 1 business day with tracking.

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