Home>Products>spherical roller bearings>55 mm x 100 mm x 21 mm SIGMA 20211 K spherical roller bearings
SIGMA 20211 K MODELS
Need a CAD or 3D Model?
55 mm x 100 mm x 21 mm SIGMA 20211 K spherical roller bearings
spherical roller bearings
SIGMA 20211 K Bearing SPECIFICATIONS
spherical roller bearings offers a 55 mm x 100 mm x 21 mm SIGMA 20211 K spherical roller bearings selection of Genuine spherical roller bearings at Wholesale 55 mm x 100 mm x 21 mm Prices. PRECISION BEARING CORP We are a 55 mm x 100 mm x 21 mm SIGMA 20211 K spherical roller bearings Certified Parts Retailer
- SIGMA
20211 K
- Intermediate Duty
- Setscrew Ball Bearing
- 205 Series
- Zinc
- 2 Bolt Light Duty Flange
- Single Lip
- 0.9375 in
- Yes
- PRECISION BEARING CORP2020-07-10 09:46:19
Welcome to my shop! Glad to serve you! Please send your question!
Types of spherical roller bearings
- Intermediate Duty
- Setscrew Ball Bearing
- 205 Series
- Zinc
- 2 Bolt Light Duty Flange
- Single Lip
- 0.9375 in
- Yes
- 205 Series
- Class 10
- Steel
- Not Applicable
- Round
- Steel
- Steel
- Setscrew
- Steel
- No
- Non-Expansion
- None
- None
- Unirex N2
- Powder Coat
- Rogersville, TN
- 7500 rpm
- Nylon
- Std Retainer
- Standard
- Self Centering
- Set Screw
- 1 LB
- 782475511495
SIGMA 20211 K Products and services 55 mm x 100 mm x 21 mm SIGMA 20211 K spherical roller bearings
Have specification details | |||||||||
---|---|---|---|---|---|---|---|---|---|
No. | Brand | l | D | d | B | C | c | I | |
20211 | ISO | - | - | 100 mm | 55 mm | 21 mm | 21 mm | - | - |
20211 C | Loyal | - | - | 100 mm | 55 mm | 21 mm | 73,5 kN | - | - |
20211 K | ISO | - | - | 100 mm | 55 mm | 21 mm | 21 mm | - | - |
20211 KC | Loyal | - | - | 100 mm | 55 mm | 21 mm | 73,5 kN | - | - |
20211 KC+H211 | Loyal | - | - | 100 mm | 55 mm | 21 mm | 73,5 kN | - | - |
20211 TVP | SIGMA | - | - | 100 mm | 55 mm | 21 mm | 21 mm | - | - |
20211-K-TVP-C3 | FAG | - | - | 100 mm | 55 mm | 21 mm | 73,5 kN | - | - |
20211-K-TVP-C3 + H211 | FAG | H211 / Adapter sleeve | 37 mm | 100 mm | 55 mm | 21 mm | - | 13 mm | - |
20211-K-TVP-C3+H211 | FAG | - | - | 100 mm | 55 mm | 21 mm | 73,5 kN | 13 mm | 37 mm |
20211-TVP | FAG | - | - | 100 mm | 55 mm | 21 mm | - | - | - |
20211 M | CONSOLIDATED BEARING | - | - | 3.937 Inch | 100 Millimeter | 2.165 Inch | 55 Millimeter | 0.827 Inch | 21 Millimeter | - | - | - |
710 mm x 1150 mm x 345 mm FAG 231/710-B-MB spherical roller bearings | Bearing Duty:Intermediate Duty; Bearing Family:Setscrew Ball Bearing; Bearing Series:205 Series; Housing Material:Zinc; Housing Type:2 Bolt Light Duty Flange; Seal Type:Single Lip; d:0.9375 in; Anti-Rotation Pin:Yes; Ball Bearing Housing Series:205 Series; Ball Grade:Class 10; Ball Material:Steel; Base to Center Height:Not Applicable; Bearing Bore Shape:Round; Bearing Inner Ring Material:Steel; Bearing Insert Material:Steel; Bearing Locking Device:Setscrew; Bearing Outer Ring Material:Steel; End Cap Groove:No; Expansion Type:Non-Expansion; Flinger Material:None; Flinger Type:None; Grease Type:Unirex N2; Housing Coating:Powder Coat; Manufacturing Plant Location:Rogersville, TN; Max Bearing Speed:7500 rpm; Retainer Material:Nylon; Retainer Type:Std Retainer; Ring Size:Standard; Self Aligning:Self Centering; Shaft Attachment (2):Set Screw; Ship Weight:1 LB; UPC:782475511495; |
25 mm x 62 mm x 17 mm ISO 20305 spherical roller bearings | Bearing Duty:Intermediate Duty; Bearing Family:Setscrew Ball Bearing; Bearing Series:205 Series; Housing Material:Zinc; Housing Type:2 Bolt Light Duty Flange; Seal Type:Single Lip; d:0.9375 in; Anti-Rotation Pin:Yes; Ball Bearing Housing Series:205 Series; Ball Grade:Class 10; Ball Material:Steel; Base to Center Height:Not Applicable; Bearing Bore Shape:Round; Bearing Inner Ring Material:Steel; Bearing Insert Material:Steel; Bearing Locking Device:Setscrew; Bearing Outer Ring Material:Steel; End Cap Groove:No; Expansion Type:Non-Expansion; Flinger Material:None; Flinger Type:None; Grease Type:Unirex N2; Housing Coating:Powder Coat; Manufacturing Plant Location:Rogersville, TN; Max Bearing Speed:7500 rpm; Retainer Material:Nylon; Retainer Type:Std Retainer; Ring Size:Standard; Self Aligning:Self Centering; Shaft Attachment (2):Set Screw; Ship Weight:1 LB; UPC:782475511495; |
Toyana 23230 CW33 spherical roller bearings | Bearing Duty:Intermediate Duty; Bearing Family:Setscrew Ball Bearing; Bearing Series:205 Series; Housing Material:Zinc; Housing Type:2 Bolt Light Duty Flange; Seal Type:Single Lip; d:0.9375 in; Anti-Rotation Pin:Yes; Ball Bearing Housing Series:205 Series; Ball Grade:Class 10; Ball Material:Steel; Base to Center Height:Not Applicable; Bearing Bore Shape:Round; Bearing Inner Ring Material:Steel; Bearing Insert Material:Steel; Bearing Locking Device:Setscrew; Bearing Outer Ring Material:Steel; End Cap Groove:No; Expansion Type:Non-Expansion; Flinger Material:None; Flinger Type:None; Grease Type:Unirex N2; Housing Coating:Powder Coat; Manufacturing Plant Location:Rogersville, TN; Max Bearing Speed:7500 rpm; Retainer Material:Nylon; Retainer Type:Std Retainer; Ring Size:Standard; Self Aligning:Self Centering; Shaft Attachment (2):Set Screw; Ship Weight:1 LB; UPC:782475511495; |
65 mm x 140 mm x 48 mm ISO 22313 KW33 spherical roller bearings | Bearing Duty:Intermediate Duty; Bearing Family:Setscrew Ball Bearing; Bearing Series:205 Series; Housing Material:Zinc; Housing Type:2 Bolt Light Duty Flange; Seal Type:Single Lip; d:0.9375 in; Anti-Rotation Pin:Yes; Ball Bearing Housing Series:205 Series; Ball Grade:Class 10; Ball Material:Steel; Base to Center Height:Not Applicable; Bearing Bore Shape:Round; Bearing Inner Ring Material:Steel; Bearing Insert Material:Steel; Bearing Locking Device:Setscrew; Bearing Outer Ring Material:Steel; End Cap Groove:No; Expansion Type:Non-Expansion; Flinger Material:None; Flinger Type:None; Grease Type:Unirex N2; Housing Coating:Powder Coat; Manufacturing Plant Location:Rogersville, TN; Max Bearing Speed:7500 rpm; Retainer Material:Nylon; Retainer Type:Std Retainer; Ring Size:Standard; Self Aligning:Self Centering; Shaft Attachment (2):Set Screw; Ship Weight:1 LB; UPC:782475511495; |
380 mm x 560 mm x 135 mm ISO 23076 KW33 spherical roller bearings | Bearing Duty:Intermediate Duty; Bearing Family:Setscrew Ball Bearing; Bearing Series:205 Series; Housing Material:Zinc; Housing Type:2 Bolt Light Duty Flange; Seal Type:Single Lip; d:0.9375 in; Anti-Rotation Pin:Yes; Ball Bearing Housing Series:205 Series; Ball Grade:Class 10; Ball Material:Steel; Base to Center Height:Not Applicable; Bearing Bore Shape:Round; Bearing Inner Ring Material:Steel; Bearing Insert Material:Steel; Bearing Locking Device:Setscrew; Bearing Outer Ring Material:Steel; End Cap Groove:No; Expansion Type:Non-Expansion; Flinger Material:None; Flinger Type:None; Grease Type:Unirex N2; Housing Coating:Powder Coat; Manufacturing Plant Location:Rogersville, TN; Max Bearing Speed:7500 rpm; Retainer Material:Nylon; Retainer Type:Std Retainer; Ring Size:Standard; Self Aligning:Self Centering; Shaft Attachment (2):Set Screw; Ship Weight:1 LB; UPC:782475511495; |
460 mm x 760 mm x 240 mm NTN 23192BK spherical roller bearings | Bearing Duty:Intermediate Duty; Bearing Family:Setscrew Ball Bearing; Bearing Series:205 Series; Housing Material:Zinc; Housing Type:2 Bolt Light Duty Flange; Seal Type:Single Lip; d:0.9375 in; Anti-Rotation Pin:Yes; Ball Bearing Housing Series:205 Series; Ball Grade:Class 10; Ball Material:Steel; Base to Center Height:Not Applicable; Bearing Bore Shape:Round; Bearing Inner Ring Material:Steel; Bearing Insert Material:Steel; Bearing Locking Device:Setscrew; Bearing Outer Ring Material:Steel; End Cap Groove:No; Expansion Type:Non-Expansion; Flinger Material:None; Flinger Type:None; Grease Type:Unirex N2; Housing Coating:Powder Coat; Manufacturing Plant Location:Rogersville, TN; Max Bearing Speed:7500 rpm; Retainer Material:Nylon; Retainer Type:Std Retainer; Ring Size:Standard; Self Aligning:Self Centering; Shaft Attachment (2):Set Screw; Ship Weight:1 LB; UPC:782475511495; |
280 mm x 460 mm x 180 mm FAG 24156-E1 spherical roller bearings | Bearing Duty:Intermediate Duty; Bearing Family:Setscrew Ball Bearing; Bearing Series:205 Series; Housing Material:Zinc; Housing Type:2 Bolt Light Duty Flange; Seal Type:Single Lip; d:0.9375 in; Anti-Rotation Pin:Yes; Ball Bearing Housing Series:205 Series; Ball Grade:Class 10; Ball Material:Steel; Base to Center Height:Not Applicable; Bearing Bore Shape:Round; Bearing Inner Ring Material:Steel; Bearing Insert Material:Steel; Bearing Locking Device:Setscrew; Bearing Outer Ring Material:Steel; End Cap Groove:No; Expansion Type:Non-Expansion; Flinger Material:None; Flinger Type:None; Grease Type:Unirex N2; Housing Coating:Powder Coat; Manufacturing Plant Location:Rogersville, TN; Max Bearing Speed:7500 rpm; Retainer Material:Nylon; Retainer Type:Std Retainer; Ring Size:Standard; Self Aligning:Self Centering; Shaft Attachment (2):Set Screw; Ship Weight:1 LB; UPC:782475511495; |
100 mm x 165 mm x 65 mm SKF 24120-2CS5/VT143 spherical roller bearings | Bearing Duty:Intermediate Duty; Bearing Family:Setscrew Ball Bearing; Bearing Series:205 Series; Housing Material:Zinc; Housing Type:2 Bolt Light Duty Flange; Seal Type:Single Lip; d:0.9375 in; Anti-Rotation Pin:Yes; Ball Bearing Housing Series:205 Series; Ball Grade:Class 10; Ball Material:Steel; Base to Center Height:Not Applicable; Bearing Bore Shape:Round; Bearing Inner Ring Material:Steel; Bearing Insert Material:Steel; Bearing Locking Device:Setscrew; Bearing Outer Ring Material:Steel; End Cap Groove:No; Expansion Type:Non-Expansion; Flinger Material:None; Flinger Type:None; Grease Type:Unirex N2; Housing Coating:Powder Coat; Manufacturing Plant Location:Rogersville, TN; Max Bearing Speed:7500 rpm; Retainer Material:Nylon; Retainer Type:Std Retainer; Ring Size:Standard; Self Aligning:Self Centering; Shaft Attachment (2):Set Screw; Ship Weight:1 LB; UPC:782475511495; |
560 mm x 820 mm x 195 mm FAG 230/560-E1A-MB1 spherical roller bearings | Bearing Duty:Intermediate Duty; Bearing Family:Setscrew Ball Bearing; Bearing Series:205 Series; Housing Material:Zinc; Housing Type:2 Bolt Light Duty Flange; Seal Type:Single Lip; d:0.9375 in; Anti-Rotation Pin:Yes; Ball Bearing Housing Series:205 Series; Ball Grade:Class 10; Ball Material:Steel; Base to Center Height:Not Applicable; Bearing Bore Shape:Round; Bearing Inner Ring Material:Steel; Bearing Insert Material:Steel; Bearing Locking Device:Setscrew; Bearing Outer Ring Material:Steel; End Cap Groove:No; Expansion Type:Non-Expansion; Flinger Material:None; Flinger Type:None; Grease Type:Unirex N2; Housing Coating:Powder Coat; Manufacturing Plant Location:Rogersville, TN; Max Bearing Speed:7500 rpm; Retainer Material:Nylon; Retainer Type:Std Retainer; Ring Size:Standard; Self Aligning:Self Centering; Shaft Attachment (2):Set Screw; Ship Weight:1 LB; UPC:782475511495; |
110 mm x 200 mm x 53 mm ISO 22222 KCW33+H322 spherical roller bearings | Bearing Duty:Intermediate Duty; Bearing Family:Setscrew Ball Bearing; Bearing Series:205 Series; Housing Material:Zinc; Housing Type:2 Bolt Light Duty Flange; Seal Type:Single Lip; d:0.9375 in; Anti-Rotation Pin:Yes; Ball Bearing Housing Series:205 Series; Ball Grade:Class 10; Ball Material:Steel; Base to Center Height:Not Applicable; Bearing Bore Shape:Round; Bearing Inner Ring Material:Steel; Bearing Insert Material:Steel; Bearing Locking Device:Setscrew; Bearing Outer Ring Material:Steel; End Cap Groove:No; Expansion Type:Non-Expansion; Flinger Material:None; Flinger Type:None; Grease Type:Unirex N2; Housing Coating:Powder Coat; Manufacturing Plant Location:Rogersville, TN; Max Bearing Speed:7500 rpm; Retainer Material:Nylon; Retainer Type:Std Retainer; Ring Size:Standard; Self Aligning:Self Centering; Shaft Attachment (2):Set Screw; Ship Weight:1 LB; UPC:782475511495; |
55 mm x 120 mm x 29 mm FAG 20311-K-TVP-C3 + H311 spherical roller bearings | Bearing Duty:Intermediate Duty; Bearing Family:Setscrew Ball Bearing; Bearing Series:205 Series; Housing Material:Zinc; Housing Type:2 Bolt Light Duty Flange; Seal Type:Single Lip; d:0.9375 in; Anti-Rotation Pin:Yes; Ball Bearing Housing Series:205 Series; Ball Grade:Class 10; Ball Material:Steel; Base to Center Height:Not Applicable; Bearing Bore Shape:Round; Bearing Inner Ring Material:Steel; Bearing Insert Material:Steel; Bearing Locking Device:Setscrew; Bearing Outer Ring Material:Steel; End Cap Groove:No; Expansion Type:Non-Expansion; Flinger Material:None; Flinger Type:None; Grease Type:Unirex N2; Housing Coating:Powder Coat; Manufacturing Plant Location:Rogersville, TN; Max Bearing Speed:7500 rpm; Retainer Material:Nylon; Retainer Type:Std Retainer; Ring Size:Standard; Self Aligning:Self Centering; Shaft Attachment (2):Set Screw; Ship Weight:1 LB; UPC:782475511495; |
Toyana 22320MW33 spherical roller bearings | Bearing Duty:Intermediate Duty; Bearing Family:Setscrew Ball Bearing; Bearing Series:205 Series; Housing Material:Zinc; Housing Type:2 Bolt Light Duty Flange; Seal Type:Single Lip; d:0.9375 in; Anti-Rotation Pin:Yes; Ball Bearing Housing Series:205 Series; Ball Grade:Class 10; Ball Material:Steel; Base to Center Height:Not Applicable; Bearing Bore Shape:Round; Bearing Inner Ring Material:Steel; Bearing Insert Material:Steel; Bearing Locking Device:Setscrew; Bearing Outer Ring Material:Steel; End Cap Groove:No; Expansion Type:Non-Expansion; Flinger Material:None; Flinger Type:None; Grease Type:Unirex N2; Housing Coating:Powder Coat; Manufacturing Plant Location:Rogersville, TN; Max Bearing Speed:7500 rpm; Retainer Material:Nylon; Retainer Type:Std Retainer; Ring Size:Standard; Self Aligning:Self Centering; Shaft Attachment (2):Set Screw; Ship Weight:1 LB; UPC:782475511495; |
100 mm x 180 mm x 46 mm Timken 22220CJ spherical roller bearings | Bearing Duty:Intermediate Duty; Bearing Family:Setscrew Ball Bearing; Bearing Series:205 Series; Housing Material:Zinc; Housing Type:2 Bolt Light Duty Flange; Seal Type:Single Lip; d:0.9375 in; Anti-Rotation Pin:Yes; Ball Bearing Housing Series:205 Series; Ball Grade:Class 10; Ball Material:Steel; Base to Center Height:Not Applicable; Bearing Bore Shape:Round; Bearing Inner Ring Material:Steel; Bearing Insert Material:Steel; Bearing Locking Device:Setscrew; Bearing Outer Ring Material:Steel; End Cap Groove:No; Expansion Type:Non-Expansion; Flinger Material:None; Flinger Type:None; Grease Type:Unirex N2; Housing Coating:Powder Coat; Manufacturing Plant Location:Rogersville, TN; Max Bearing Speed:7500 rpm; Retainer Material:Nylon; Retainer Type:Std Retainer; Ring Size:Standard; Self Aligning:Self Centering; Shaft Attachment (2):Set Screw; Ship Weight:1 LB; UPC:782475511495; |
110 mm x 180 mm x 69 mm NSK 24122CK30E4 spherical roller bearings | Bearing Duty:Intermediate Duty; Bearing Family:Setscrew Ball Bearing; Bearing Series:205 Series; Housing Material:Zinc; Housing Type:2 Bolt Light Duty Flange; Seal Type:Single Lip; d:0.9375 in; Anti-Rotation Pin:Yes; Ball Bearing Housing Series:205 Series; Ball Grade:Class 10; Ball Material:Steel; Base to Center Height:Not Applicable; Bearing Bore Shape:Round; Bearing Inner Ring Material:Steel; Bearing Insert Material:Steel; Bearing Locking Device:Setscrew; Bearing Outer Ring Material:Steel; End Cap Groove:No; Expansion Type:Non-Expansion; Flinger Material:None; Flinger Type:None; Grease Type:Unirex N2; Housing Coating:Powder Coat; Manufacturing Plant Location:Rogersville, TN; Max Bearing Speed:7500 rpm; Retainer Material:Nylon; Retainer Type:Std Retainer; Ring Size:Standard; Self Aligning:Self Centering; Shaft Attachment (2):Set Screw; Ship Weight:1 LB; UPC:782475511495; |
120 mm x 180 mm x 60 mm NTN 24024C spherical roller bearings | Bearing Duty:Intermediate Duty; Bearing Family:Setscrew Ball Bearing; Bearing Series:205 Series; Housing Material:Zinc; Housing Type:2 Bolt Light Duty Flange; Seal Type:Single Lip; d:0.9375 in; Anti-Rotation Pin:Yes; Ball Bearing Housing Series:205 Series; Ball Grade:Class 10; Ball Material:Steel; Base to Center Height:Not Applicable; Bearing Bore Shape:Round; Bearing Inner Ring Material:Steel; Bearing Insert Material:Steel; Bearing Locking Device:Setscrew; Bearing Outer Ring Material:Steel; End Cap Groove:No; Expansion Type:Non-Expansion; Flinger Material:None; Flinger Type:None; Grease Type:Unirex N2; Housing Coating:Powder Coat; Manufacturing Plant Location:Rogersville, TN; Max Bearing Speed:7500 rpm; Retainer Material:Nylon; Retainer Type:Std Retainer; Ring Size:Standard; Self Aligning:Self Centering; Shaft Attachment (2):Set Screw; Ship Weight:1 LB; UPC:782475511495; |
Toyana 23222 KMBW33 spherical roller bearings | Bearing Duty:Intermediate Duty; Bearing Family:Setscrew Ball Bearing; Bearing Series:205 Series; Housing Material:Zinc; Housing Type:2 Bolt Light Duty Flange; Seal Type:Single Lip; d:0.9375 in; Anti-Rotation Pin:Yes; Ball Bearing Housing Series:205 Series; Ball Grade:Class 10; Ball Material:Steel; Base to Center Height:Not Applicable; Bearing Bore Shape:Round; Bearing Inner Ring Material:Steel; Bearing Insert Material:Steel; Bearing Locking Device:Setscrew; Bearing Outer Ring Material:Steel; End Cap Groove:No; Expansion Type:Non-Expansion; Flinger Material:None; Flinger Type:None; Grease Type:Unirex N2; Housing Coating:Powder Coat; Manufacturing Plant Location:Rogersville, TN; Max Bearing Speed:7500 rpm; Retainer Material:Nylon; Retainer Type:Std Retainer; Ring Size:Standard; Self Aligning:Self Centering; Shaft Attachment (2):Set Screw; Ship Weight:1 LB; UPC:782475511495; |
55 mm x 100 mm x 21 mm SIGMA 20211 K spherical roller bearings Video
55 mm x 100 mm x 21 mm SIGMA 20211 K spherical roller bearings
55 mm x 100 mm x 21 mm SIGMA 20211 K spherical roller
Bearing 20211 K (SIGMA) | Size and Specification | Bearings
Brand SIGMA 20211 K Spherical Roller Bearings - Loyal Angular
55 mm x 100 mm x 21 mm SIGMA 20211 K spherical roller bearings
55 mm x 100 mm x 21 mm SIGMA 20211 K spherical roller bearings
55 mm x 100 mm x 21 mm SIGMA 20211 K spherical roller bearings
55 mm x 100 mm x 21 mm SIGMA 20211 K spherical roller bearings
55 mm x 100 mm x 21 mm SIGMA 20211 K spherical roller bearings
SIGMA 20211 K INTERCHANGE
spherical roller bearings Part series 20211 K is a potential replacement for these common bearing part numbers:
20211 K
20211 K
20211 K
20211 K
20211 K
20211 K
20211 K
20211 K
Contact Us
- PRECISION BEARING CORP
- Address365 Kimberly Drive, Carol Stream, Illinois U.S.A.
- Phone(Working Time)753-298-7732
- Fax
SIGMA 20211 K Technical Articles
NTN PRICE LIST 2019 |
SCHAEFFLER BEARING PRICE LIST |
NBC BEARING RATE LIST |
spherical roller bearings CATEGORIES
- angular contact ball bearings
- bearing units
- cylindrical roller bearings
- deep groove ball bearings
- needle roller bearings
- plain bearings
- self aligning ball bearings
- spherical roller bearings
- tapered roller bearings
- thrust ball bearings
- thrust roller bearings
- wheel bearings
- Timken 529 Bearing
- Lm48500la Timken Bearing
- Timken 17118 Bearing
- 520x Bearing
- Large Slewing Bearings
- Slewing Ring Bearings
- Kaydon Slewing Bearing
- Bearing Slewing Ring
- Double-Row Angular Contact Ball Bearings
- Wide Series Cylindrical Roller Bearings
- Roll Neck Bearings For Rolling Mill
- Precision Ball Bearings
- High Precision Bearings
- High Precision Ball Bearings
- Gates Powergrip Htd
- Gates Gt2 Belt 6mm
- Gates Automotive Belts
- Acdelco 6k930
- K081243hd Belts
Customers Who Viewed SIGMA 20211 K Bearing Also Viewed
- Toyana 23230 CW33 spherical roller bearings
- 110 mm x 200 mm x 53 mm ISO 22222 KCW33+H322 spherical roller bearings
- Toyana 23222 KMBW33 spherical roller bearings
- 110 mm x 180 mm x 69 mm NSK 24122CK30E4 spherical roller bearings
- 55 mm x 120 mm x 29 mm FAG 20311-K-TVP-C3 + H311 spherical roller bearings