1218 K Bearing Self Aligning Ball Bearing 1218K Tapered Bore 90x160x30mm

1218 K Bearing Self Aligning Ball Bearing 1218K Tapered Bore 90x160x30mm

Self‑aligning ball bearing is a double‑row rolling‑element bearing. Its outer ring has a spherical inner raceway, while the inner ring features two separate raceways together with steel balls and a cage.

This unique design permits angular misalignment between the shaft and housing. It can accommodate shaft deflection and assembly inaccuracies without generating harmful internal stress. Available in open or sealed designs with cylindrical or tapered bores, it performs well at low and moderate speeds, offering reliable service for misalignment‑prone industrial equipment.

 Bearing structure

Self‑aligning ball bearing consists of an inner ring with two raceways, a spherical outer‑ring raceway, steel balls and a cage. The outer ring’s spherical surface enables angular misalignment between inner and outer rings. The cage holds rolling balls evenly spaced to prevent collision. Two‑row rolling elements share loads. Its special structure compensates shaft deflection and mounting errors, tolerating shaft misalignment without extra stress on components, widely used for shafts prone to bending.

Types

Self‑aligning ball bearings are mainly divided into two basic types. One is the open type without seals, suitable for adequate external lubrication. The other is sealed versions fitted with rubber or metal shields on one or both sides, keeping out dust and retaining grease for maintenance‑free operation.

They also differ in bore forms: cylindrical bore for standard shafts, and tapered bore for mounting on adapter sleeves, convenient for quick installation and position adjustment. Double‑row structure is standard for all these variants

 Application

Self‑aligning ball bearings are widely applied in equipment with shaft deflection or mounting misalignment. They are commonly used in agricultural machinery, conveyors, textile machines and fans.

These bearings suit low‑to‑moderate speed conditions. They compensate shaft bending and assembly errors, reducing extra internal stress. They are also adopted in small electric motors and printing machinery. Sealed types work for dusty environments, while open versions fit heavy‑lubrication scenarios to guarantee stable long‑term operation.

1,Q: Are you trading company or manufacturer ?A: We are factory.
2,Q: How long is your delivery time for 1218 K bearing?
A: Generally it is 3-5 days if the goods are in stock.or it is 15-20 days if the goods are not in stock, it is according to quantity.
3,Q: Do you provide samples for 1218 K bearing? is it free or extra ?
A: Yes, we could offer the sample for free charge but do not pay the cost of freight.
4,Q: What is your terms of payment for 1218 K bearing?
A: Payment<=1000USD,100% in advance.Payment>=1000USD, 30% T/T in advance,pay the balance before shippment.
5, Q:Could you accept OEM and customize for 1218 K bearing?
A:YES,we can customize for you according to sample or drawing.
6, Q: When can I get the price for 1218 K bearing?
A: after we get your inquiry, usually within 2-6 hours.Urgent will be faster.
7,Q:How about your quality of bearings?
A:Our quality of bearings is based on ISO9001 and quality of bearing is our soul.
8, Q: What is the MOQ of 1218 K bearing?
A: Usually ≥1,According your demand.
9,Q: Will you check these products before shipment?
A: Yes, before shipment products will be strictly inspection on our factory QC Process System.We have a professional QC team.
10, Q: What will we do if If you are not satisfied with the product?
A: If have any question,Please contact us at first time, we will immediately processing

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Whatsapp/Tel:+8615315596312
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Email/Skype:skf@llhbearing.com