Miniature ball bearings are the most representative rolling bearings. Compared with other types of bearings of the same size, this type of bearing has the lowest friction coefficient, high speed limit, simple structure, low manufacturing cost, high precision, no need for frequent maintenance, and large size and form. It is one of the most widely used type bearing . it is subjected to radial loads and also can withstand certain axial loads.when it is only subjected to radial loads, the contact angle is zero.

1. Sealed form: open (no cover), metal shield with dust cover (ZZ), rubber seal (2RS).

2. Cage: steel cage, nylon cage

3. Quality grade: ABEC-1,ABEC-3,ABEC-5/Z1V1,Z2V2,Z3V3

4. Similar Type: 673 674 675 676...682 683,684 685....693 694 695 696,

5. Packing: tube packing+50 pcs white box+carton+solid pallet or according to customer's request

The following is about

High quality Miniature bearing 1.5*4*2mm 681XZZ jewel roller bearing deep groove ball bearings

structure and specification,which I hope can help you better understand.

Quality is the basis of products. We already established ISO9001:2015 quality management system,ISO14001:2015 environment management system and OHSAS 18001:2007 health and safety management.We own the consummate equipments,the advanced craft and high technology,the high precision testing instruments. In this way,it greatly enhances the machining accuracy,effectively guarantees the superior quality of the goods,reduces the product manufacture precision. It continuously lifts up the products quality through the techinical innovation.

Our testing center has hardness instruments,roundness machine, roughness machine,noise and BVT testing machine,clearance instrument,inner/outer/width diameter instrument.which can provide scientific results of finished products in order to re-engineer improvements in production process. We also conduct all raw material chemical composition test to ensure product lifespan expectation result.before sending each lot,we must test quality from freedom products or 100% inspection as per customer’s request.

Miniature ball bearings are widely used in computer, printer machine,medical and household appliance,packing and textile machinery,sports equipment,office equipment, micro motors,precision instruments,sports equipment,office equipment, micro motors,precision instruments,series toys and other fields.

1.Reply within 24hours for your questions

2.Strictly quality control during production and inspect randomly before every delivery

3.Responsible dealing with each problem accured during our business

Q: Can I get your samples ? is it free or charged ?
A: Yes, we can offer some pieces of samples for free but the express cost is charged.

Q: How long is your delivery time?
A: Generally it is 5-7 days if the goods are in stock. or it is 15-30 days if the goods are out of stock.

Q: What is your terms of payment ?
A: Amount lower than 5000USD, 100% in advance. Amount more than 5000USD, 30% T/T in advance ,balance before shipment.

Q: Will you check these products before shipment?

A: Yes, all the bearings will be strictly controlled before shipment.

Q: What will you do if we are not satisfied with the product?

A: If have any abnormal, Please contact us at first time, we will immediately processing.