✖

Home

Stock Categories

Technical Articles

Vickers Piston Pump PV Series

FAG Bearing

NSK Bearing

Home>Products>NTN Bearing>NTN UCFX16D1 Flange Block Bearings

NTN UCFX16D1 MODELS

Need a CAD or 3D Model?

What is UCFX16D1 bearing interchange？

Contact Now WhatsApp Be Our Agent

NTN UCFX16D1 Flange Block Bearings

Name: NTN UCFX16D1 Flange Block Bearings
Brand: NTN
SKU: UCFX16D1
Rating: 4.9 (5 reviews)

NTN UCFX16D1 Bearing SPECIFICATIONS

NTN UCFX16D1 Flange Block Bearings Manufacturers 200.0000 mm D , Accessories Rolamentos do Brasil Ltda. Online 48.00 mm B Wholesale Suppliers‎ !
Brand Name:NTN
Model Number:
UCFX16D1
D:200.0000 mm
B:48.00 mm
Oil Speed Rating n2:3800 rpm
d:80.000 mm
Basic Dynamic Radial Load Rating C:183000 N
Fillet Radius rb:1.00 mm
Grease Speed Rating n1:2600 rpm
Fillet Radius ra:2.50 mm

Accessories Rolamentos do Brasil Ltda.

Accessories Rolamentos do Brasil Ltda.China

Accessories Rolamentos do Brasil Ltda.2020-07-10 09:46:19
Welcome to my shop! Glad to serve you! Please send your question!

Interested In: Price Inspection Certificate Product Specifications Company Profile

NTN Bearing Cross References

D:200.0000 mm
B:48.00 mm
Oil Speed Rating n2:3800 rpm
d:80.000 mm
Basic Dynamic Radial Load Rating C:183000 N
Fillet Radius rb:1.00 mm
Grease Speed Rating n1:2600 rpm
Fillet Radius ra:2.50 mm
Basic Static Radial Load Rating Co:156000 N

NTN UCFX16D1 NTN UCFX16D1 Flange Block Bearings Sponsored Products Related To This Item

No.	Brand	B	J	K	s	a	N	S	H
N308EG15	NTN	47.00 mm	-	-	-	-	-	-	-
UCPX14-212D1	NTN	60 mm	-	-	-	-	-	-	-
7207HG1DFJ84D	NTN	90 mm	-	-	-	-	-	-	-
NH414AL1C4NA	NTN	-	-	-	-	-	-	-	-
6318ZZC4/5C	NTN	-	-	-	-	-	-	-	-
6021ZZC3/L627	NTN	18.00 mm	-	-	-	-	-	-	-
6001JRXLLU	NTN	40 mm	-	-	-	-	-	-	-
3205A	NTN	60.00 mm	-	-	-	-	-	-	-
NJ222EG15	NTN	32 mm	-	-	-	-	-	-	-
7003CVDBJ84	NTN	30.20 mm	-	-	-	-	-	-	-
ML7006CVUJ74S	NTN	224 mm	-	12 mm	-	-	-	-	-
608ZZ/5S	NTN	21.00 mm	-	-	-	-	-	-	-
6902LLUC3	NTN	146 mm	-	-	-	-	-	-	-
1204J	NTN	-	-	-	-	-	-	-	-
607LLBC3/1K	NTN	28 mm	-	-	-	-	-	-	-
23030BKD1C3	NTN	-	-	-	-	-	-	-	-
JELFLU-1.11/16	NTN	-	-	-	-	-	50 mm	-	-
7209HG1DUJ94	NTN	25.40 mm	-	-	-	-	-	-	-
UCFX16D1	NTN	48.00 mm	-	-	-	-	-	-	-
NU2311EG15	NTN	-	-	-	-	-	-	-	-
6015LLBC3/9B	NTN	-	-	-	-	-	-	-	-
7011CVDBRJ74	NTN	12 mm	-	-	-	-	-	-	-
62306X1LLUAC3/L106Q2	NTN	-	-	-	-	-	-	-	-

1.378 Inch \| 35 Millimeter x 2.441 Inch \| 62 Millimeter x 1.654 Inch \| 42 Millimeter NTN 7007HVQ16J94 Precision Ball Bearings	Fillet Radius ra:2.50 mm; Grease Speed Rating n1:3000 rpm; B:60.00 mm; Basic Dynamic Radial Load Rating C:140000 N; Basic Static Radial Load Rating Co:51000 N; d:85.000 mm; D:180.0000 mm; Oil Speed Rating n2:3600 rpm; Size (mm):1.378 Inch \| 35 Millimeter x 2.441 Inch \| 62 Millimeter x 1.654 Inch \| 42 Millimeter ;
NTN 2205K Self Aligning Ball Bearings	L:320.278 mm; Mass bearing unit:24 kg; B:116.681 mm; S:0.794 mm; A3:36.513 mm; A:88.9 mm; A6:28.575 mm; Limiting speed:700 r/min; d2:152.4 mm; A5:46.831 mm;
3.15 Inch \| 80 Millimeter x 6.693 Inch \| 170 Millimeter x 1.535 Inch \| 39 Millimeter NTN NU316G1CM Cylindrical Roller Bearings	Static (Cor):13.9 mm; Oil:191.320 kN; D:310 mm; with cylindrical bore:950 min-1; with tapered bore:1 300 min-1; B:110 mm; rs (min):4 mm; Pu:1340 kN; d:170 mm; Dynamic (Cr):7.5 mm; Size (mm):3.15 Inch \| 80 Millimeter x 6.693 Inch \| 170 Millimeter x 1.535 Inch \| 39 Millimeter ;
NTN 6201LLU/12.69C3/#01 Single Row Ball Bearings	D:160.0000 mm; Accessories:Two Seals; Grease Speed Rating n1:4300 rpm; Fillet Radius ra:2.00 mm; Oil Speed Rating n2:5000 rpm; Oil Speed Rating Open/Shielded n2:5000 rpm; Basic Static Radial Load Rating Co:76500 N; Grease Speed Rating Open/Shielded n1:4300 rpm; Sealed Speed Rating n3:2800 rpm; d:75.000 mm;
0.984 Inch \| 25 Millimeter x 2.047 Inch \| 52 Millimeter x 0.811 Inch \| 20.6 Millimeter NTN 3205A Angular Contact Ball Bearings	Oil Speed Rating Open/Shielded n2:3100 rpm; d:100.000 mm; Accessories:Without Accessories; Fillet Radius ra:3.00 mm; D:265.0000 mm; Basic Dynamic Radial Load Rating C:225000 N; B:60.00 mm; Basic Static Radial Load Rating Co:200000 N; Grease Speed Rating Open/Shielded n1:2500 rpm; Sealed Speed Rating n3:1800 rpm; Size (mm):0.984 Inch \| 25 Millimeter x 2.047 Inch \| 52 Millimeter x 0.811 Inch \| 20.6 Millimeter ;
NTN 6903JRXLLUCS22/L588 Single Row Ball Bearings	d:12.000 mm; Basic Static Radial Load Rating Co:7800 N; Oil Speed Rating n2:62000 rpm; B:20.00 mm; D:32.0000 mm; Basic Dynamic Radial Load Rating C:13300 N; Fillet Radius rb:0.30 mm; Fillet Radius ra:0.60 mm; Grease Speed Rating n1:41000 rpm;
2.165 Inch \| 55 Millimeter x 4.724 Inch \| 120 Millimeter x 1.693 Inch \| 43 Millimeter NTN NU2311EG15 Cylindrical Roller Bearings	Bearing:1222 K; End plug (suffix Y):EPR 13; P180°:60.9 kN; Cap bolt, SAE grade:5; Max. speed for PosiTrac Plus seal:1450 r/min; A2:165.1 mm; Cap bolt recommended tightening torque:203.4 N·m; h:45.244 mm; da:93.662 mm; H2:50.8 mm; Size (mm):2.165 Inch \| 55 Millimeter x 4.724 Inch \| 120 Millimeter x 1.693 Inch \| 43 Millimeter ;
1.181 Inch \| 30 Millimeter x 2.835 Inch \| 72 Millimeter x 0.748 Inch \| 19 Millimeter NTN NU306G1C3 Cylindrical Roller Bearings	Sealed Speed Rating n3:4300 rpm; Fillet Radius ra:1.00 mm; Basic Dynamic Radial Load Rating C:32500 N; d:60.000 mm; Oil Speed Rating Open/Shielded n2:8000 rpm; Basic Static Radial Load Rating Co:25000 N; Accessories:Two Shields & Snap-R; B:18.00 mm; Grease Speed Rating Open/Shielded n1:6700 rpm; D:95.0000 mm; Size (mm):1.181 Inch \| 30 Millimeter x 2.835 Inch \| 72 Millimeter x 0.748 Inch \| 19 Millimeter ;
2.362 Inch \| 60 Millimeter x 3.74 Inch \| 95 Millimeter x 0.709 Inch \| 18 Millimeter NTN 7012HVURJ74 Precision Ball Bearings	Stabilizing ring:2 x SR-15-0; Cap bolt, SAE grade:5; h:31.75 mm; Labyrinth ring:2 x LOR 36; J max.:244.475 mm; H2:28.575 mm; Cap bolt recommended tightening torque:81.3 N·m; J min.:219.075 mm; Bearing:1215 K; A2:118.666 mm; Size (mm):2.362 Inch \| 60 Millimeter x 3.74 Inch \| 95 Millimeter x 0.709 Inch \| 18 Millimeter ;
NTN 6015LLBC3/9B Single Row Ball Bearings	Mass bearing:0.0048 kg; ra max.:0.2 mm; da min.:7.3 mm; D:16 mm; Da max.:14.4 mm; Calculation factor f0:6.8; Calculation factor kr:0.025; Limiting speed:50000 r/min; Basic dynamic load rating C:0.761 kN; Fatigue load limit Pu:0.011 kN;
NTN UEL315-215D1 Insert Bearings Spherical OD	bb:166 mm; Labyrinth seal:2 x TS 92; Appropriate attachment bolt, size G:36 mm; db:430 mm; Cap bolt, rec. tightening torque:600 N·m; Cap bolt, size:M 36x240; End cover:ETS 92; P120°:2700 kN; Initial grease fill, 20%:6.4 kg; Mass housing:445 kg;
NTN 6217LLU/1E Single Row Ball Bearings	d:70 mm; d1:150 mm; r1,2 min.:2 mm; Mass shaft washer:1.73 kg; B:16 mm;
5.906 Inch \| 150 Millimeter x 10.63 Inch \| 270 Millimeter x 2.874 Inch \| 73 Millimeter NTN 22230BKD1C3 Spherical Roller Bearings	b:12.5 mm; Mass bearing:67.5 kg; a:301 mm; d1 ≈:403 mm; Basic dynamic load rating C:780 kN; Calculation factor X:0.6; da min.:362 mm; r1,2 min.:5 mm; Limiting speed:1800 r/min; r0:2.5 mm; Size (mm):5.906 Inch \| 150 Millimeter x 10.63 Inch \| 270 Millimeter x 2.874 Inch \| 73 Millimeter ;
NTN XLS4-1/2 Single Row Ball Bearings	Fatigue load limit Pu:455 kN; Mass bearing:230 kg; d:1000 mm; Calculation factor Y:0.6; das:1063 mm; Basic dynamic load rating C:2920 kN; ra max.:5 mm; E:1165 mm; Reference speed:160 r/min; da min.:1023 mm;
1.181 Inch \| 30 Millimeter x 2.165 Inch \| 55 Millimeter x 0.512 Inch \| 13 Millimeter NTN ML7006CVUJ74S Precision Ball Bearings	Basic static load rating C0:7800 kN; da max.:427 mm; Da max.:594 mm; K:12 mm; Calculation factor Y0:1.8; Reference speed:560 r/min; d2 ≈:427 mm; Calculation factor Y2:2.9; b:22.3 mm; B:224 mm; Size (mm):1.181 Inch \| 30 Millimeter x 2.165 Inch \| 55 Millimeter x 0.512 Inch \| 13 Millimeter ;
0.472 Inch \| 12 Millimeter x 1.26 Inch \| 32 Millimeter x 0.787 Inch \| 20 Millimeter NTN 7201CG1DUJ74 Precision Ball Bearings	rs:0.3 mm; B:6 mm; Static (Cor):1.078 kN; ra:0.3 max; Pu:0.049 kN; da:9 min; Dynamic (Cr):2.838 kN; D:19 mm; Grease:35 000 min-1; Da:17.2 max; Size (mm):0.472 Inch \| 12 Millimeter x 1.26 Inch \| 32 Millimeter x 0.787 Inch \| 20 Millimeter ;

NTN UCFX16D1 Flange Block Bearings Video

NTN UCFX16D1 Medium Duty Flange Bearing, 4 Bolts

NTN UCFX16D1 Medium Duty Flange Bearing, 4 Bolts, Setscrew Lock, Regreasable, Contact and Flinger Seals, Cast Iron, 800mm Bore, 6-47/64" Bolt Hole

UCFX16D1 NTN • ABF Store

UCFX16D1 NTN available at ABF.store ✓ Same-day shipment ✓ 8.000.000 bearings and electric motors ✓ Worldwide delivery ✓ Customer Service in 8

NTN - UCFX16D1 - Motion Industries

Buy NTN Flange-Mount Ball Bearing Units UCFX16D1 direct from Motion Industries. Your proven service leader with reliable delivery since 1972

NTN UCFX16D1, Four Bolt Square Flanged Unit, Cast ... - I4Mart

General Descriptions. Brand NTN. Bearing Category Mounted Units / Pillow Blocks. Description Regardless of your industry type, NTN offer a diverse series of

Bearing Units - NTN SNR

NTN warrants, to the original purchaser only, that the delivered product which is ...... series 62 and 63 of the NTN deep groove ball bearing are ...... UCFX16D1

UCFX16D1 - NTN Bearing Finder

Browse Item # UCFX16D1, Four Bolt Square Flanged Unit, Cast Housing, Set Screw, UCF Type in the NTN Bearing Corp. of America catalog including Item #

NTN UCFX16D1 Four Bolt Square Flanged Unit, Cast

NTN UCFX16D1 Four Bolt Square Flanged Unit, Cast Housing, Set Screw, UCF Type, 3.1496 in Bore

UCFX16D1 | Cast Iron Square Flange Type | NTN | MISUMI USA

Cast Iron Square Flange Type of NTN,UCFX16D1, Check out the variety of configurable, Cast Iron Square Flange Type of NTN,UCFX16D1,MISUMI has other

NTN UCFX16D1 INTERCHANGE

NTN Bearing Part series UCFX16D1 is a potential replacement for these common bearing part numbers:

NSKUCFX16D1
SKFUCFX16D1
NTNUCFX16D1
FAGUCFX16D1
TIMKENUCFX16D1
KOYOUCFX16D1
NACHIUCFX16D1
DODGEUCFX16D1

Contact Us

Accessories Rolamentos do Brasil Ltda.: AddressIndustrias, 380 - Parque Industrial - CEP 83.820-332 - Fazenda Rio Grande - PR - BRAZIL; Phone(Working Time)627-3267; Fax

Send Now

NTN UCFX16D1 Technical Articles

Can a bad CV axle sound like a bad wheel bearing?

Wheel Bearing Noise Diagnostics - Brake & Front EndThe classic symptom of a bad wheel bearing is a cyclic noise that changes in that could be the source of cyclical noises like CV joints, brakes and differentials 2/2017: Tech Bulletin—Top...

How do you know if your front wheel bearings are bad?

Signs of a bad wheel bearing…Pay attention! | Car Care TipsFeb 10, 2018 — It often refers to the steering of the vehicle, which can include wheel bearings. Wheel looseness, or also called wheel play, is another common symptom of a bad...

How do you solve a bearing?

Directions and BearingsExample 20. A cyclist travels 10 km south, then 8 km east. Find the cyclist's bearing from her starting point to the nearest degree. Solution: Bearings - Mathematics GCSE Revision - Revision MathsBearings. A bearing is an...

NTN Bearing CATEGORIES

Top Products

RIT BEARING SMR 74 Ball Bearings	NICE BALL BEARING 3003DSTNTG18 Single Row Ball Bearings	11.024 Inch \| 280 Millimeter x 14.961 Inch \| 380 Millimeter x 2.362 Inch \| 60 Millimeter NSK NCF2956
Vickers PV063R1L1T1NFRC4211 Piston Pump PV Series	Timken 6ce Bearing

1.378 Inch \| 35 Millimeter x 2.441 Inch \| 62 Millimeter x 1.654 Inch \| 42 Millimeter NTN 7007HVQ16J94 Precision Ball Bearings	Fillet Radius ra:2.50 mm; Grease Speed Rating n1:3000 rpm; B:60.00 mm; Basic Dynamic Radial Load Rating C:140000 N; Basic Static Radial Load Rating Co:51000 N; d:85.000 mm; D:180.0000 mm; Oil Speed Rating n2:3600 rpm; Size (mm):1.378 Inch \| 35 Millimeter x 2.441 Inch \| 62 Millimeter x 1.654 Inch \| 42 Millimeter ;
NTN 2205K Self Aligning Ball Bearings	L:320.278 mm; Mass bearing unit:24 kg; B:116.681 mm; S:0.794 mm; A3:36.513 mm; A:88.9 mm; A6:28.575 mm; Limiting speed:700 r/min; d2:152.4 mm; A5:46.831 mm;
3.15 Inch \| 80 Millimeter x 6.693 Inch \| 170 Millimeter x 1.535 Inch \| 39 Millimeter NTN NU316G1CM Cylindrical Roller Bearings	Static (Cor):13.9 mm; Oil:191.320 kN; D:310 mm; with cylindrical bore:950 min-1; with tapered bore:1 300 min-1; B:110 mm; rs (min):4 mm; Pu:1340 kN; d:170 mm; Dynamic (Cr):7.5 mm; Size (mm):3.15 Inch \| 80 Millimeter x 6.693 Inch \| 170 Millimeter x 1.535 Inch \| 39 Millimeter ;
NTN 6201LLU/12.69C3/#01 Single Row Ball Bearings	D:160.0000 mm; Accessories:Two Seals; Grease Speed Rating n1:4300 rpm; Fillet Radius ra:2.00 mm; Oil Speed Rating n2:5000 rpm; Oil Speed Rating Open/Shielded n2:5000 rpm; Basic Static Radial Load Rating Co:76500 N; Grease Speed Rating Open/Shielded n1:4300 rpm; Sealed Speed Rating n3:2800 rpm; d:75.000 mm;
0.984 Inch \| 25 Millimeter x 2.047 Inch \| 52 Millimeter x 0.811 Inch \| 20.6 Millimeter NTN 3205A Angular Contact Ball Bearings	Oil Speed Rating Open/Shielded n2:3100 rpm; d:100.000 mm; Accessories:Without Accessories; Fillet Radius ra:3.00 mm; D:265.0000 mm; Basic Dynamic Radial Load Rating C:225000 N; B:60.00 mm; Basic Static Radial Load Rating Co:200000 N; Grease Speed Rating Open/Shielded n1:2500 rpm; Sealed Speed Rating n3:1800 rpm; Size (mm):0.984 Inch \| 25 Millimeter x 2.047 Inch \| 52 Millimeter x 0.811 Inch \| 20.6 Millimeter ;
NTN 6903JRXLLUCS22/L588 Single Row Ball Bearings	d:12.000 mm; Basic Static Radial Load Rating Co:7800 N; Oil Speed Rating n2:62000 rpm; B:20.00 mm; D:32.0000 mm; Basic Dynamic Radial Load Rating C:13300 N; Fillet Radius rb:0.30 mm; Fillet Radius ra:0.60 mm; Grease Speed Rating n1:41000 rpm;
2.165 Inch \| 55 Millimeter x 4.724 Inch \| 120 Millimeter x 1.693 Inch \| 43 Millimeter NTN NU2311EG15 Cylindrical Roller Bearings	Bearing:1222 K; End plug (suffix Y):EPR 13; P180°:60.9 kN; Cap bolt, SAE grade:5; Max. speed for PosiTrac Plus seal:1450 r/min; A2:165.1 mm; Cap bolt recommended tightening torque:203.4 N·m; h:45.244 mm; da:93.662 mm; H2:50.8 mm; Size (mm):2.165 Inch \| 55 Millimeter x 4.724 Inch \| 120 Millimeter x 1.693 Inch \| 43 Millimeter ;
1.181 Inch \| 30 Millimeter x 2.835 Inch \| 72 Millimeter x 0.748 Inch \| 19 Millimeter NTN NU306G1C3 Cylindrical Roller Bearings	Sealed Speed Rating n3:4300 rpm; Fillet Radius ra:1.00 mm; Basic Dynamic Radial Load Rating C:32500 N; d:60.000 mm; Oil Speed Rating Open/Shielded n2:8000 rpm; Basic Static Radial Load Rating Co:25000 N; Accessories:Two Shields & Snap-R; B:18.00 mm; Grease Speed Rating Open/Shielded n1:6700 rpm; D:95.0000 mm; Size (mm):1.181 Inch \| 30 Millimeter x 2.835 Inch \| 72 Millimeter x 0.748 Inch \| 19 Millimeter ;
2.362 Inch \| 60 Millimeter x 3.74 Inch \| 95 Millimeter x 0.709 Inch \| 18 Millimeter NTN 7012HVURJ74 Precision Ball Bearings	Stabilizing ring:2 x SR-15-0; Cap bolt, SAE grade:5; h:31.75 mm; Labyrinth ring:2 x LOR 36; J max.:244.475 mm; H2:28.575 mm; Cap bolt recommended tightening torque:81.3 N·m; J min.:219.075 mm; Bearing:1215 K; A2:118.666 mm; Size (mm):2.362 Inch \| 60 Millimeter x 3.74 Inch \| 95 Millimeter x 0.709 Inch \| 18 Millimeter ;
NTN 6015LLBC3/9B Single Row Ball Bearings	Mass bearing:0.0048 kg; ra max.:0.2 mm; da min.:7.3 mm; D:16 mm; Da max.:14.4 mm; Calculation factor f0:6.8; Calculation factor kr:0.025; Limiting speed:50000 r/min; Basic dynamic load rating C:0.761 kN; Fatigue load limit Pu:0.011 kN;
NTN UEL315-215D1 Insert Bearings Spherical OD	bb:166 mm; Labyrinth seal:2 x TS 92; Appropriate attachment bolt, size G:36 mm; db:430 mm; Cap bolt, rec. tightening torque:600 N·m; Cap bolt, size:M 36x240; End cover:ETS 92; P120°:2700 kN; Initial grease fill, 20%:6.4 kg; Mass housing:445 kg;
NTN 6217LLU/1E Single Row Ball Bearings	d:70 mm; d1:150 mm; r1,2 min.:2 mm; Mass shaft washer:1.73 kg; B:16 mm;
5.906 Inch \| 150 Millimeter x 10.63 Inch \| 270 Millimeter x 2.874 Inch \| 73 Millimeter NTN 22230BKD1C3 Spherical Roller Bearings	b:12.5 mm; Mass bearing:67.5 kg; a:301 mm; d1 ≈:403 mm; Basic dynamic load rating C:780 kN; Calculation factor X:0.6; da min.:362 mm; r1,2 min.:5 mm; Limiting speed:1800 r/min; r0:2.5 mm; Size (mm):5.906 Inch \| 150 Millimeter x 10.63 Inch \| 270 Millimeter x 2.874 Inch \| 73 Millimeter ;
NTN XLS4-1/2 Single Row Ball Bearings	Fatigue load limit Pu:455 kN; Mass bearing:230 kg; d:1000 mm; Calculation factor Y:0.6; das:1063 mm; Basic dynamic load rating C:2920 kN; ra max.:5 mm; E:1165 mm; Reference speed:160 r/min; da min.:1023 mm;
1.181 Inch \| 30 Millimeter x 2.165 Inch \| 55 Millimeter x 0.512 Inch \| 13 Millimeter NTN ML7006CVUJ74S Precision Ball Bearings	Basic static load rating C0:7800 kN; da max.:427 mm; Da max.:594 mm; K:12 mm; Calculation factor Y0:1.8; Reference speed:560 r/min; d2 ≈:427 mm; Calculation factor Y2:2.9; b:22.3 mm; B:224 mm; Size (mm):1.181 Inch \| 30 Millimeter x 2.165 Inch \| 55 Millimeter x 0.512 Inch \| 13 Millimeter ;
0.472 Inch \| 12 Millimeter x 1.26 Inch \| 32 Millimeter x 0.787 Inch \| 20 Millimeter NTN 7201CG1DUJ74 Precision Ball Bearings	rs:0.3 mm; B:6 mm; Static (Cor):1.078 kN; ra:0.3 max; Pu:0.049 kN; da:9 min; Dynamic (Cr):2.838 kN; D:19 mm; Grease:35 000 min-1; Da:17.2 max; Size (mm):0.472 Inch \| 12 Millimeter x 1.26 Inch \| 32 Millimeter x 0.787 Inch \| 20 Millimeter ;