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Home>Products>Full Complement Cylindrical Roller Bearings>NNU4988 KOYO Double-row cylindrical roller bearings

KOYO NNU4988 MODELS

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NNU4988 KOYO Double-row cylindrical roller bearings

Name: NNU4988 KOYO Double-row cylindrical roller bearings
Brand: KOYO
SKU: NNU4988
Rating: 4.9 (5 reviews)

KOYO NNU4988 Bearing SPECIFICATIONS

Brand Name:KOYO
Model Number:
NNU4988
Series:18000
Cone Part Number:18200
Cup Part Number:18337
Design Units:Imperial
Bearing Weight:0.4 Kg
Cage Type:Stamped Steel
d:50.8 mm
D:85.725 mm

Download KOYO NNU4988 Spec Sheet

TIMKEN BEARING MFG.CORP

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NNU4988 KOYO Double-row cylindrical roller bearings Product Description

Series:18000
Cone Part Number:18200
Cup Part Number:18337
Design Units:Imperial
Bearing Weight:0.4 Kg
Cage Type:Stamped Steel
d:50.8 mm
D:85.725 mm
B - Cone Width:18.263 mm
C - Cup Width:12.700 mm
B:19.050 mm
R - Cone Backface To Clear Radius1:1.520 mm
r - Cup Backface To Clear Radius2:1.52 mm
da - Cone Frontface Backing Diameter:55.88 mm
db - Cone Backface Backing Diameter:58.93 mm
Da - Cup Frontface Backing Diameter:82.00 mm
Db - Cup Backface Backing Diameter:75.95 mm
Ab - Cage-Cone Frontface Clearance:2.3 mm
Aa - Cage-Cone Backface Clearance:1.8 mm
a - Effective Center Location3:2 mm
C90 - Dynamic Radial Rating (90 million revolutions)4:3560 lbf
C1 - Dynamic Radial Rating (1 million revolutions)5:13700 lbf
C0 - Static Radial Rating:14400 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)6:3470 lbf
K - Factor7:1.03
e - ISO Factor8:0.57
Y - ISO Factor9:1.06
G1 - Heat Generation Factor (Roller-Raceway):26.1
G2 - Heat Generation Factor (Rib-Roller End):20.3
Cg - Geometry Factor:0.0852

NNU4988 KOYO Double-row cylindrical roller bearings pdf

KOYO NNU4988 NNU4988 KOYO Double-row cylindrical roller bearings Specification details

Basic dynamic load rating (C)	1280 kN
Bore Diameter (mm)	170
Outer Diameter (mm)	250
D	250 mm
C	170 mm
Width (mm)	170
Bearing number	FC 3450170
Weight	28,5 Kg
d	170 mm
B	170 mm
Size (mm)	170x250x170

Sponsored products related to NNU4988 KOYO Double-row cylindrical roller bearings
No.	Brand	D	B	d	C	Fw	Ew	Cu	Cr
NNU4988	KOYO	600 mm	160 mm	440 mm	2060 kN	487 mm	-	-	-
NNU4988-S-K-M-SP	FAG BEARING	-	-	-	-	-	-	-	-
NNU4988MAW33	TIMKEN	-	-	-	-	-	-	-	-
NNU4988 V	Loyal	600 mm	160 mm	440 mm	160 mm	-	-	-	-
NNU4988C1NAP4	NTN	600 mm	160 mm	440 mm	160 mm	-	-	-	-
NNU4988K	Loyal	600 mm	160 mm	440 mm	160 mm	-	-	-	-
NNU4988K V	Loyal	600 mm	160 mm	440 mm	160 mm	-	-	-	-
NNU4988KC1NAP4	NTN	600 mm	160 mm	440 mm	160 mm	-	-	-	-

126FC8036 KOYO Four-row cylindrical roller bearings	A:58 mm; G:16 mm; A1:38 mm; Basic dynamic load rating (C):35,1 kN; s1:30,5 mm; Bore Diameter (mm):44,45; H1:57,2 mm; Basic static load rating (C0):23,2 kN; N1:20 mm; d:44,45 mm; H:114,5 mm; H2:22 mm; Fatigue load limit (Pu):0,98; B1:55 mm; N:26,5 mm; Bearing number:SYJ 50 KF+HE 2310; J:157,5 mm; Wei
120FC8764 KOYO Four-row cylindrical roller bearings	Width (mm):28; Bore Diameter (mm):110; C:28 mm; (Grease) Lubrication Speed:7500 r/min; Weight:2 Kg; Angle (α):15 °; Bearing number:7022 CTBP4; Basic static load rating (C0):110 kN; D:170 mm; Size (mm):110x170x28; Outer Diameter (mm):170; d:110 mm; B1:28 mm; Basic dynamic load rating (C):11
4CR600A KOYO Four-row cylindrical roller bearings	Bearing number:645/632; (Grease) Lubrication Speed:2500 r/min; D:136.525 mm; Bore Diameter (mm):71.438; B:41.275 mm; Calculation factor (e):0.36; r1 min.:6.4 mm; Size (mm):71.438x136.525x41.27; (Oil) Lubrication Speed:3500 r/min; C:31.750 mm; d:71.438 mm; Width (mm):41.275; Weight:2,5 Kg; a:11.0 mm;
122FC8557 KOYO Four-row cylindrical roller bearings	e - ISO Factor3:0.21; Design Unit:METRIC; B - Outer Ring Width:56.000 mm; Reference Thermal Speed Rating (Oil)7:2600; Y2 - ISO Factor6:3.07; da - Inner Ring Backing Diameter:169.000 mm; Y0 - ISO Factor4:3.14; C1(2) - Dynamic Radial Rating (Two-Rows):621000 N; Cg - Geometry Factor8:0.0856; Bearing We
122FC8766 KOYO Four-row cylindrical roller bearings	ra1 max.:0,6 mm; series:ARN; D1:60 mm; C:20 mm; Da max.:64 mm; da min.:56 mm; Weight:0,85 Kg; Static load rating axial (C0):121 kN; bearing material:Chrome Steel; bore diameter:35 mm; r1 min.:0,6 mm; Weight / Kilogram:0.813; Dynamic load rating axial (C):43 kN; cage material:Steel; d1:35 mm; Manufac
4CR6 KOYO Four-row cylindrical roller bearings	B:34 mm; Bore Diameter (mm):100; (Grease) Lubrication Speed:3200 r/min; Weight:3.73 Kg; Width (mm):34; d:100 mm; Outer Diameter (mm):180; D:180 mm; Bearing number:NJ 220 E; Basic dynamic load rating (C):250 kN; Size (mm):100x180x34; Fw:119 mm; Basic static load rating (C0):305 kN; r1 min.:2.1 mm; r
4CR600B KOYO Four-row cylindrical roller bearings	Width (mm):14; Basic dynamic load rating (C):9,9 kN; C:14 mm; Bearing number:1204; Size (mm):20x47x14; B:14 mm; Outer Diameter (mm):47; d:20 mm; (Grease) Lubrication Speed:14000 r/min; Weight:0,12 Kg; Bore Diameter (mm):20; D:47 mm; Basic static load rating (C0):2,6 kN;
120FC87540A KOYO Four-row cylindrical roller bearings	r2 min.:3,2 mm; Bore Diameter (mm):57,15; Calculation factor (Y0):0,76; Weight:1,572 Kg; d:57,15 mm; Width (mm):30,162; C:23,812 mm; Calculation factor (e):0,44; db min:68 mm; r min.:3,6 mm; ra max.:3,6 mm; D:117,475 mm; da min.:74 mm; Da:104 mm; rb max.:3,2 mm; Basic static load rating (C0):179 kN;

NNU4988 KOYO Double-row cylindrical roller bearings Video

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KOYO NNU4988 INTERCHANGE

Full Complement Cylindrical Roller Bearings Part series NNU4988 is a potential replacement for these common bearing part numbers:

NSKNNU4988
SKFNNU4988
NTNNNU4988
FAGNNU4988
TIMKENNNU4988
KOYONNU4988
NACHINNU4988
DODGENNU4988

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TIMKEN BEARING MFG.CORP: Address346 North Bower Road, Macomb, IL 61336-2501 U.S.A.; Phone(Working Time)409-782-6227; Fax

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