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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:595
Cone Part Number:595
Cup Part Number:592D
Design Units:Imperial
Bearing Weight:13.56 lb
Cage Type:Stamped Steel
Ab - Cage-Cone Frontface Clearance:0.09 in
d:3.2500 in

Download KOYO NNU4988 Spec Sheet

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NTN Wälzlager(Europa) G.m.b.H.2020-07-10 09:46:19
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NNU4988 KOYO Double-row cylindrical roller bearings Details

Series:595
Cone Part Number:595
Cup Part Number:592D
Design Units:Imperial
Bearing Weight:13.56 lb
Cage Type:Stamped Steel
Ab - Cage-Cone Frontface Clearance:0.09 in
d:3.2500 in
D:6.0000 in
B - Cone Width:1.4300 in
C - Double Cup Width:2.5 in
T - Bearing Width across Cones:3.2500 in
R - Cone Backface To Clear Radius1:0.14 in
r - Cup Frontface To Clear Radius2:0.03 in
db - Cone Backface Backing Diameter:3.94 in
Da - Cup Frontface Backing Diameter:5.71 in
Aa - Cage-Cone Backface Clearance:0.15 in
C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3:12600 lbf
C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4:84600 lbf
C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5:21900 lbf
Ca90 - Dynamic Thrust Rating (90 million revolutions)6:9530 lbf
K - Factor7:1.32
e - ISO Factor8:0.44
Y1 - ISO Factor9:1.53
Y2 - ISO Factor10:2.27
G1 - Heat Generation Factor (Roller-Raceway)11:151
G2 - Heat Generation Factor (Rib-Roller End):36.8
Cg - Geometry Factor12:0.142

NNU4988 KOYO Double-row cylindrical roller bearings pdf

KOYO NNU4988 Full Complement Cylindrical Roller Bearings Description

B	20 mm
Oil Holes	2.5 mm
Static Load Rating	60.2 kN
Da	120 mm
Dynamic Load Rating	39.7 kN
D	140 mm
da	104 mm
Radius	1 mm
d	90 mm

Answers to Your Dimensions Question
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	-	-	-	-

NNU4088A KOYO Double-row cylindrical roller bearings	D90 mmda67 mmOil Holes2 mmB13 mmDynamic Load Rating20.3 kNd60 mmDa82 mmRadius0.6 mmStatic Load Rating27 kN
80NNU6017 KOYO Double-row cylindrical roller bearings	Da238 mmOil Holes2.5 mmd200 mmRadius2 mmStatic Load Rating166.4 kNDynamic Load Rating82.3 kNB25 mmda218 mmD260 mm
88NNU6523 KOYO Double-row cylindrical roller bearings	Dynamic Load Rating28.1 kNd120 mmRadius1 mmStatic Load Rating50.3 kNOil Holes2.5 mmDa143 mmda126 mmD150 mmB16 mm
NNU408 KOYO Double-row cylindrical roller bearings	D80 mmB13 mmDa72 mmd50 mmda57.2 mmOil Holes2 mmDynamic Load Rating18.9 kNStatic Load Rating23.4 kNRadius0.6 mm
84DC6022 KOYO Double-row cylindrical roller bearings	Series:595; Cone Part Number:595; Cup Part Number:592D; Design Units:Imperial; Bearing Weight:13.56 lb; Cage Type:Stamped Steel; Ab - Cage-Cone Frontface Clearance:0.09 in; d:3.2500 in; D:6.0000 in; B - Cone Width:1.4300 in; C - Double Cup Width:2.5 in; T - Bearing Width across Cones:3.2500 in; R - Cone Backface To Clear Radius1:0.14 in; r - Cup Frontface To Clear Radius2:0.03 in; db - Cone Backface Backing Diameter:3.94 in; Da - Cup Frontface Backing Diameter:5.71 in; Aa - Cage-Cone Backface Clearance:0.15 in; C90 - Dynamic Radial Rating (One-Row, 90 million revolutions)3:12600 lbf; C1 - Dynamic Radial Rating (Two-Row, 1 million revolutions)4:84600 lbf; C90(2) - Dynamic Radial Rating (Two-Row, 90 million revolutions)5:21900 lbf; Ca90 - Dynamic Thrust Rating (90 million revolutions)6:9530 lbf; K - Factor7:1.32; e - ISO Factor8:0.44; Y1 - ISO Factor9:1.53; Y2 - ISO Factor10:2.27; G1 - Heat Generation Factor (Roller-Raceway)11:151; G2 - Heat Generation Factor (Rib-Roller End):36.8; Cg - Geometry Factor12:0.142;
NNU4084-1 KOYO Double-row cylindrical roller bearings	B12 mmMounting Hole Size3.4 mmInner rings PCD28 mmMounting Hole Depth3.3 mmStatic Load Rating9.16 kNOuter rings PCD57 mmD70 mmDynamic Load Rating8.26 kNd20 mmda35 mmNumber of Mounting Holes6Thread SizeM3Oil Holes3 mmMounting Hole Countersink Diameter6.5 mmDa47 mmChamfer0.6 mm
88DC62225 KOYO Double-row cylindrical roller bearings	B13 mmD110 mmOil Holes2 mmd80 mmDa102 mmRadius0.6 mmda87 mmStatic Load Rating34.2 kNDynamic Load Rating22.8 kN
NN3084 KOYO Double-row cylindrical roller bearings	Oil Holes3 mmRadius2 mmD280 mmB30 mmd200 mmDa248 mmDynamic Load Rating122.9 kNStatic Load Rating242 kNda231 mm
86DC7528 KOYO Double-row cylindrical roller bearings	B16 mmDa143 mmStatic Load Rating50.3 kND150 mmda126 mmRadius1 mmd120 mmDynamic Load Rating28.1 kNOil Holes2.5 mm
NNU4984 KOYO Double-row cylindrical roller bearings	da112 mmDa129 mmD140 mmStatic Load Rating52.3 kNB16 mmRadius1 mmd100 mmDynamic Load Rating32.5 kNOil Holes2.5 mm
82DC6022 KOYO Double-row cylindrical roller bearings	Da238 mmOil Holes2.5 mmd200 mmRadius2 mmStatic Load Rating166.4 kNDynamic Load Rating82.3 kNB25 mmda218 mmD260 mm

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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